JP3817534B2 - Soil and groundwater purification composition and purification method - Google Patents
Soil and groundwater purification composition and purification method Download PDFInfo
- Publication number
- JP3817534B2 JP3817534B2 JP2003297491A JP2003297491A JP3817534B2 JP 3817534 B2 JP3817534 B2 JP 3817534B2 JP 2003297491 A JP2003297491 A JP 2003297491A JP 2003297491 A JP2003297491 A JP 2003297491A JP 3817534 B2 JP3817534 B2 JP 3817534B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- groundwater
- purification composition
- purification
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims description 94
- 238000000746 purification Methods 0.000 title claims description 85
- 239000002689 soil Substances 0.000 title claims description 70
- 239000003673 groundwater Substances 0.000 title claims description 66
- 238000000034 method Methods 0.000 title claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 48
- 229910052799 carbon Inorganic materials 0.000 claims description 48
- 239000000194 fatty acid Substances 0.000 claims description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 32
- 229930195729 fatty acid Natural products 0.000 claims description 32
- 239000004094 surface-active agent Substances 0.000 claims description 30
- 150000004665 fatty acids Chemical class 0.000 claims description 28
- 125000004432 carbon atom Chemical group C* 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims description 13
- 239000011574 phosphorus Substances 0.000 claims description 13
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 150000001298 alcohols Chemical class 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229910010272 inorganic material Inorganic materials 0.000 claims description 4
- 239000011147 inorganic material Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 150000004671 saturated fatty acids Chemical class 0.000 claims description 2
- -1 aliphatic amines Chemical class 0.000 description 21
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 14
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 9
- 244000005700 microbiome Species 0.000 description 9
- 229950011008 tetrachloroethylene Drugs 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 238000010828 elution Methods 0.000 description 8
- 150000004045 organic chlorine compounds Chemical class 0.000 description 8
- 230000000813 microbial effect Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000033116 oxidation-reduction process Effects 0.000 description 6
- 229920001214 Polysorbate 60 Polymers 0.000 description 5
- 239000003945 anionic surfactant Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 4
- 235000011130 ammonium sulphate Nutrition 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001257 hydrogen Chemical group 0.000 description 4
- 229910052739 hydrogen Chemical group 0.000 description 4
- 239000000852 hydrogen donor Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 4
- 235000019796 monopotassium phosphate Nutrition 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 235000021314 Palmitic acid Nutrition 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical group [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000019482 Palm oil Nutrition 0.000 description 2
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- PLZVEHJLHYMBBY-UHFFFAOYSA-N Tetradecylamine Chemical compound CCCCCCCCCCCCCCN PLZVEHJLHYMBBY-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 235000019868 cocoa butter Nutrition 0.000 description 2
- 229940110456 cocoa butter Drugs 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- NOPFSRXAKWQILS-UHFFFAOYSA-N docosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCO NOPFSRXAKWQILS-UHFFFAOYSA-N 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 2
- 229940043348 myristyl alcohol Drugs 0.000 description 2
- NQYKSVOHDVVDOR-UHFFFAOYSA-N n-hexadecylhexadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCC NQYKSVOHDVVDOR-UHFFFAOYSA-N 0.000 description 2
- 239000005445 natural material Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000003346 palm kernel oil Substances 0.000 description 2
- 235000019865 palm kernel oil Nutrition 0.000 description 2
- 239000002540 palm oil Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 2
- 229920000053 polysorbate 80 Polymers 0.000 description 2
- 235000015277 pork Nutrition 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000003381 solubilizing effect Effects 0.000 description 2
- 239000001587 sorbitan monostearate Substances 0.000 description 2
- 235000011076 sorbitan monostearate Nutrition 0.000 description 2
- 229940035048 sorbitan monostearate Drugs 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- HANWHVWXFQSQGJ-UHFFFAOYSA-N 1-tetradecoxytetradecane Chemical compound CCCCCCCCCCCCCCOCCCCCCCCCCCCCC HANWHVWXFQSQGJ-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- TWJNQYPJQDRXPH-UHFFFAOYSA-N 2-cyanobenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1C#N TWJNQYPJQDRXPH-UHFFFAOYSA-N 0.000 description 1
- DRDBBZHENIKVRG-UHFFFAOYSA-N 2-n-hexadecylpropane-1,2-diamine Chemical compound CCCCCCCCCCCCCCCCNC(C)CN DRDBBZHENIKVRG-UHFFFAOYSA-N 0.000 description 1
- KFXTTZQGCNRYEN-UHFFFAOYSA-N 2-n-octadecylpropane-1,2-diamine Chemical compound CCCCCCCCCCCCCCCCCCNC(C)CN KFXTTZQGCNRYEN-UHFFFAOYSA-N 0.000 description 1
- IYVBNEJDHFJJEM-UHFFFAOYSA-N 22-methyltricosan-1-amine Chemical compound CC(C)CCCCCCCCCCCCCCCCCCCCCN IYVBNEJDHFJJEM-UHFFFAOYSA-N 0.000 description 1
- LIFHMKCDDVTICL-UHFFFAOYSA-N 6-(chloromethyl)phenanthridine Chemical compound C1=CC=C2C(CCl)=NC3=CC=CC=C3C2=C1 LIFHMKCDDVTICL-UHFFFAOYSA-N 0.000 description 1
- XZIIFPSPUDAGJM-UHFFFAOYSA-N 6-chloro-2-n,2-n-diethylpyrimidine-2,4-diamine Chemical compound CCN(CC)C1=NC(N)=CC(Cl)=N1 XZIIFPSPUDAGJM-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 235000021360 Myristic acid Nutrition 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N Myristic acid Natural products CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 1
- IYFATESGLOUGBX-YVNJGZBMSA-N Sorbitan monopalmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O IYFATESGLOUGBX-YVNJGZBMSA-N 0.000 description 1
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical group [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- AQKOHYMKBUOXEB-RYNSOKOISA-N [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-(16-methylheptadecanoyloxy)oxolan-2-yl]-2-(16-methylheptadecanoyloxy)ethyl] 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCCCCCCCCCC(C)C)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCCCCCCCCCC(C)C AQKOHYMKBUOXEB-RYNSOKOISA-N 0.000 description 1
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 description 1
- PZQBWGFCGIRLBB-NJYHNNHUSA-N [(2r)-2-[(2s,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCCCCCCCCCCCC)[C@H]1OC[C@H](O)[C@H]1O PZQBWGFCGIRLBB-NJYHNNHUSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 150000008431 aliphatic amides Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- BTBJBAZGXNKLQC-UHFFFAOYSA-N ammonium lauryl sulfate Chemical compound [NH4+].CCCCCCCCCCCCOS([O-])(=O)=O BTBJBAZGXNKLQC-UHFFFAOYSA-N 0.000 description 1
- 229940063953 ammonium lauryl sulfate Drugs 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229940116226 behenic acid Drugs 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229960000541 cetyl alcohol Drugs 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000019700 dicalcium phosphate Nutrition 0.000 description 1
- 229960000735 docosanol Drugs 0.000 description 1
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 239000000386 donor Substances 0.000 description 1
- 230000005264 electron capture Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- KCNOEZOXGYXXQU-UHFFFAOYSA-N heptatriacontan-19-one Chemical compound CCCCCCCCCCCCCCCCCCC(=O)CCCCCCCCCCCCCCCCCC KCNOEZOXGYXXQU-UHFFFAOYSA-N 0.000 description 1
- HSEMFIZWXHQJAE-UHFFFAOYSA-N hexadecanamide Chemical compound CCCCCCCCCCCCCCCC(N)=O HSEMFIZWXHQJAE-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012543 microbiological analysis Methods 0.000 description 1
- QEALYLRSRQDCRA-UHFFFAOYSA-N myristamide Chemical compound CCCCCCCCCCCCCC(N)=O QEALYLRSRQDCRA-UHFFFAOYSA-N 0.000 description 1
- KKBOOQDFOWZSDC-UHFFFAOYSA-N n-[2-(diethylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCN(CC)CC KKBOOQDFOWZSDC-UHFFFAOYSA-N 0.000 description 1
- KUIOQEAUQATWEY-UHFFFAOYSA-N n-[3-(diethylamino)propyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCCN(CC)CC KUIOQEAUQATWEY-UHFFFAOYSA-N 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- HKUFIYBZNQSHQS-UHFFFAOYSA-N n-octadecyloctadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC HKUFIYBZNQSHQS-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- UPHWVVKYDQHTCF-UHFFFAOYSA-N octadecylazanium;acetate Chemical compound CC(O)=O.CCCCCCCCCCCCCCCCCCN UPHWVVKYDQHTCF-UHFFFAOYSA-N 0.000 description 1
- WGOROJDSDNILMB-UHFFFAOYSA-N octatriacontanediamide Chemical compound NC(=O)CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC(N)=O WGOROJDSDNILMB-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 description 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 description 1
- 239000001818 polyoxyethylene sorbitan monostearate Substances 0.000 description 1
- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 description 1
- 239000001816 polyoxyethylene sorbitan tristearate Substances 0.000 description 1
- 235000010988 polyoxyethylene sorbitan tristearate Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 229950006451 sorbitan laurate Drugs 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 235000011067 sorbitan monolaureate Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001570 sorbitan monopalmitate Substances 0.000 description 1
- 235000011071 sorbitan monopalmitate Nutrition 0.000 description 1
- 229940031953 sorbitan monopalmitate Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 229940012831 stearyl alcohol Drugs 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Biological Wastes In General (AREA)
Description
本発明は、環境汚染物質である、主にテトラクロロエチレン、トリクロロエチレン等の揮発性有機塩素化合物を土壌中の微生物の力で分解するバイオレメーデーションを用いる土壌と地下水の浄化組成物および浄化方法に関する。 The present invention relates to a soil and groundwater purification composition and purification method using bioremediation that decomposes volatile organic chlorine compounds such as tetrachloroethylene and trichlorethylene, which are environmental pollutants, by the power of microorganisms in the soil.
土壌中や地下水中に含まれるテトラクロロエチレン、トリクロロエチレン等の揮発性有機塩素化合物の環境汚染物質を低減する方法としては、土壌中に存在する微生物を用いるバイオレメーデーションという方法がある。このようなバイオレメーデーションにおいて用いる微生物は、水素供与体とリン、窒素などの栄養塩の存在下で効果的に揮発性有機塩素化合物を分解することが知られている。バイオレメーデーションを用いた従来の土壌と地下水の浄化方法としては、微生物の炭素源（水素供与体）としてエタノール等を用いた方法が知られている（例えば、非特許文献１参照。）。 As a method for reducing environmental pollutants such as tetrachlorethylene and trichlorethylene contained in soil and groundwater, there is a method called bioremediation using microorganisms present in soil. Microorganisms used in such bioremediation are known to effectively decompose volatile organochlorine compounds in the presence of hydrogen donors and nutrient salts such as phosphorus and nitrogen. As a conventional soil and groundwater purification method using bioremation, a method using ethanol or the like as a microbial carbon source (hydrogen donor) is known (for example, see Non-Patent Document 1).
また、特許文献１および特許文献２には、水素供与体としてクエン酸やエタノール等の常温で液体または水溶性の有機物を用いた揮発性有機塩素化合物の低減方法が開示されている。 Patent Documents 1 and 2 disclose a method for reducing volatile organic chlorine compounds using a liquid or water-soluble organic substance such as citric acid or ethanol as a hydrogen donor at room temperature.
さらに、特許文献３には特定の炭素数を限定した常温で固体の脂肪酸およびアルコールを用いた土壌と地下水における揮発性有機化合物の低減方法について開示されている。
前述の従来技術において、特許文献１、２および非特許文献１による揮発性有機塩素化合物の低減方法では、クエン酸やエタノール等の液体状の炭素源を用いているため常時土壌中へ添加し続ける必要があり、作業性およびコストの面で問題があった。
また、炭素数を限定した脂肪酸およびアルコールを用いた特許文献３に開示された従来技術では、炭素源としての水溶性が低いため、比較的流れの遅い地下水や僅かな水分しか存在しない土壌中では有機物の移動距離が限定されるという問題があった。この結果、特許文献３に開示された揮発性有機化合物の低減方法では、広範な汚染範囲を浄化するために数多くの添加ポイント（井戸等の穴）を設ける必要があり、施設の構築や維持管理に莫大な費用を要した。したがって、上記の従来技術における問題を解決し、効果的な土壌と地下水の浄化を行うことは、この分野における達成すべき課題であった。
本発明は従来のバイオレメーデーションによる揮発性有機塩素化合物の低減方法における課題を解決するものであり、一度の添加で長期間炭素を供給することができ、さらには炭素源としての溶解度を向上させ、数少ない添加ポイントで広範な汚染範囲の浄化を行うことができる土壌と地下水の浄化組成物および浄化方法を提供することを目的とする。
In the above-described prior art, the methods for reducing volatile organochlorine compounds according to Patent Documents 1 and 2 and Non-Patent Document 1 always use liquid carbon sources such as citric acid and ethanol, so that they are constantly added to the soil. There was a problem in terms of workability and cost.
Moreover, in the prior art disclosed in Patent Document 3 using fatty acids and alcohols with a limited number of carbons, since water solubility as a carbon source is low, in groundwater with relatively slow flow or in a soil where only a small amount of water exists. There was a problem that the moving distance of the organic matter was limited. As a result, in the method for reducing volatile organic compounds disclosed in Patent Document 3, it is necessary to provide a large number of addition points (holes such as wells) in order to purify a wide range of contamination. Was very expensive. Therefore, solving the problems in the prior art described above and performing effective soil and groundwater purification was a problem to be achieved in this field.
The present invention solves the problem in the conventional method for reducing volatile organochlorine compounds by bioremediation, can supply carbon for a long time by one addition, and further improves the solubility as a carbon source. An object of the present invention is to provide a purification composition and a purification method for soil and groundwater that can purify a wide range of contamination with few addition points.
前述の従来技術における課題を解決するために本発明者らは鋭意研究の結果、特定の炭素数と分子構造とを有する脂肪酸またはアルコール、および特定の物質群から選ばれた界面活性剤を共存させた組成物である浄化組成物を構成したとき、従来技術の課題を極めて効率的に解決することができることを見出し本発明を完成するに至った。
すなわち、本発明に係る土壌と地下水の浄化組成物は、請求項１に記載したように、土壌と地下水のバイオレメーデーションに用いられる固形物状の浄化組成物であって、当該浄化組成物が炭素源と非イオン性界面活性剤とを有し、前記非イオン性界面活性剤は親水性と疎水性の比率を示すＨ.Ｌ.Ｂ.値（Hydrophile-lipophile balance）が４以上であり、前記炭素源が下記（ｉ）〜（iii）から選ばれる少なくとも１種である。
（ｉ）炭素数が１４以上の脂肪酸
（ii）炭素数が１４以上のアルコール
（iii）炭素数が１２以上の脂肪族アミン、または炭素数が１２以上の脂肪酸アマイド
In order to solve the above-mentioned problems in the prior art, the present inventors have conducted extensive research and found that a fatty acid or alcohol having a specific carbon number and molecular structure and a surfactant selected from a specific group of substances coexist. The present inventors have found that the problems of the prior art can be solved very efficiently when a purification composition, which is a new composition, is constructed.
That is, the soil and groundwater purification composition according to the present invention is a solid purification composition used for bioremediation of soil and groundwater as described in claim 1 , wherein the purification composition is A carbon source and a nonionic surfactant, wherein the nonionic surfactant has a HL value (Hydrophile-lipophile balance) indicating a ratio of hydrophilicity to hydrophobicity of 4 or more, The carbon source is at least one selected from the following (i) to (iii).
(I) a fatty acid having 14 or more carbon atoms (ii) an alcohol having 14 or more carbon atoms (iii) an aliphatic amine having 12 or more carbon atoms, or a fatty acid amide having 12 or more carbon atoms
また、本発明に係る土壌と地下水の浄化組成物は、請求項２に記載したように、請求項１の脂肪酸が直鎖状飽和脂肪酸であることがさらに好ましい。
また、本発明に係る土壌と地下水の浄化組成物は、請求項３に記載したように、請求項１のアルコールが飽和アルコールであることがさらに好ましい。
また、本発明に係る土壌と地下水の浄化組成物は、請求項４に記載したように、請求項１の界面活性剤の添加量が浄化組成物の２重量％以上５５重量％以下であることがさらに好ましい。
また、本発明に係る土壌と地下水の浄化組成物は、請求項５に記載したように、請求項１の内容に無機性窒素源をさらに含有させることがさらに好ましい。
また、本発明に係る土壌と地下水の浄化組成物は、請求項６に記載したように、請求項１の内容に無機性リン源をさらに含有させることがさらに好ましい。
また、本発明に係る土壌と地下水の浄化組成物は、請求項７に記載したように、請求項１の内容に比重調整無機材料をさらに含有させることがさらに好ましい。
本発明に係る土壌と地下水の浄化方法においては、請求項８に記載したように、請求項１〜７のいずれかに記載の土壌と地下水の浄化組成物を土壌に添加させている。
In the soil and groundwater purification composition according to the present invention, as described in claim 2, the fatty acid of claim 1 is more preferably a linear saturated fatty acid.
In the soil and groundwater purification composition according to the present invention, as described in claim 3, the alcohol of claim 1 is more preferably a saturated alcohol.
In the soil and groundwater purification composition according to the present invention, as described in claim 4 , the addition amount of the surfactant of claim 1 is 2% by weight or more and 55% by weight or less of the purification composition. Is more preferable.
Further, as described in claim 5 , the soil and groundwater purification composition according to the present invention preferably further contains an inorganic nitrogen source in the contents of claim 1.
Moreover, as described in claim 6 , the soil and groundwater purification composition according to the present invention further preferably contains an inorganic phosphorus source in the contents of claim 1.
Further, as described in claim 7 , the soil and groundwater purification composition according to the present invention further preferably contains a specific gravity adjusting inorganic material in the content of claim 1.
In the soil and groundwater purification method according to the present invention, as described in claim 8 , the soil and groundwater purification composition according to any one of claims 1 to 7 is added to the soil.
さらに、本発明に係る土壌と地下水の浄化方法は、上記の各要件を具備した浄化組成物を土壌に添加することであり、例えば井戸や連続溝に代表される穴を地表から地中の方向に形成し、その穴から浄化組成物を直接土壌中や地下水中へ添加する。 Furthermore, the soil and groundwater purification method according to the present invention is to add a purification composition having the above requirements to the soil. For example, a hole represented by a well or a continuous groove is formed in the direction from the surface to the ground. The purification composition is added directly into the soil or groundwater from the hole.
本発明によれば、浄化組成物を一度添加するだけで、長期間炭素を供給することが可能となり、また炭素源としての溶解度を向上させ、数少ない添加ポイントで広範な汚染範囲の浄化を行うことができる土壌と地下水の浄化組成物および浄化方法を提供することが可能となる。 According to the present invention, it is possible to supply carbon for a long period of time by adding a purification composition once, improve the solubility as a carbon source, and purify a wide range of contamination with few addition points. It is possible to provide a purification composition and a purification method for soil and groundwater that can be used.
以下、本発明に係る土壌と地下水の浄化組成物および浄化方法について説明する。
本発明に係る土壌と地下水の浄化組成物は、生分解性を有し、特定された炭素数と分子構造を有する炭素源と、特定物質から選択される界面活性剤との組成物である。
Hereinafter, the purification composition and purification method for soil and groundwater according to the present invention will be described.
The soil and groundwater purification composition according to the present invention is a composition of a biodegradable carbon source having a specified carbon number and molecular structure, and a surfactant selected from specific substances.
対象とする土壌中や地下水中に生息する微生物は、本発明の土壌と地下水の浄化組成物から供給された炭素源（水素供与体または電子供与体とも表現される）を用いて増殖し、有機塩素化合物の塩素と水素の置換反応を行い、最終的に塩素を全く持たない無害な物質（エチレン、エタン等）に変換し浄化するものである。 Microorganisms that inhabit the target soil or groundwater grow using a carbon source (also expressed as a hydrogen donor or electron donor) supplied from the soil and groundwater purification composition of the present invention, and grow organically. A chlorine and hydrogen substitution reaction of a chlorine compound is performed, and finally it is converted into a harmless substance (ethylene, ethane, etc.) having no chlorine and purified.
本発明の炭素源としては、次に示す（ｉ）〜（iii）の炭素源が挙げられる。
（ｉ）炭素数が１４以上の脂肪酸
（ii）炭素数が１４以上のアルコール
（iii）炭素数が１２以上の脂肪族アミン、または炭素数が１２以上の脂肪酸アマイド
（ｉ）の炭素数が１４以上の脂肪酸は、好ましくは炭素数が１４〜２２の脂肪酸であり、より好ましくは炭素数が１６〜１８の直鎖脂肪酸である。（ii）の炭素数が１４以上のアルコールは、好ましくは炭素数が１４〜２２のアルコールであり、より好ましくは炭素数が１４〜１８の直鎖アルコールである。（iii）の炭素数が１２以上の脂肪族アミン、又は炭素数が１２以上の脂肪酸アマイドは、好ましくは炭素数が１２〜２４の脂肪族アミン、又は炭素数が１２〜２４の脂肪酸アマイドであり、より好ましくは炭素数が１２〜２０の直鎖脂肪族アミン、又は炭素数が１２〜２０の直鎖脂肪族アマイドである。
本発明における上記（ｉ）〜（iii）に示した炭素源は、単独で、あるいは２種以上を混合して含有してもよい。これらの炭素源の中では、生分解性とコスト面から（ｉ）が特に好ましい。
Examples of the carbon source of the present invention include the following carbon sources (i) to (iii).
(I) a fatty acid having 14 or more carbon atoms (ii) an alcohol having 14 or more carbon atoms (iii) an aliphatic amine having 12 or more carbon atoms, or a fatty acid amide having 12 or more carbon atoms (i) having 14 carbon atoms The above fatty acid is preferably a fatty acid having 14 to 22 carbon atoms, more preferably a linear fatty acid having 16 to 18 carbon atoms. The alcohol having 14 or more carbon atoms in (ii) is preferably an alcohol having 14 to 22 carbon atoms, and more preferably a linear alcohol having 14 to 18 carbon atoms. The (iii) aliphatic amine having 12 or more carbon atoms or the fatty acid amide having 12 or more carbon atoms is preferably an aliphatic amine having 12 to 24 carbon atoms or a fatty acid amide having 12 to 24 carbon atoms. More preferably, it is a linear aliphatic amine having 12 to 20 carbon atoms or a linear aliphatic amide having 12 to 20 carbon atoms.
The carbon sources shown in the above (i) to (iii) in the present invention may be contained alone or in admixture of two or more. Among these carbon sources, (i) is particularly preferable from the viewpoint of biodegradability and cost.
炭素数が上記の設定数値未満では、常温で、または土壌中と地下水中で液体として存在するため、結果的に常時炭素源を土壌中へ添加する必要があり、好ましいものではない。 If the carbon number is less than the above set numerical value, it exists as a liquid at room temperature or in soil and groundwater, and as a result, it is necessary to constantly add a carbon source to the soil, which is not preferable.
また、炭素源における不飽和結合の存在は融点を著しく低下させ、炭素源が常温で、または土壌中や地下水中で液体として存在し、結果的に常時炭素源を土壌中へ添加する必要があり、好ましいものではない。 In addition, the presence of unsaturated bonds in the carbon source significantly lowers the melting point, and the carbon source exists as a liquid at room temperature or in soil or groundwater. As a result, it is necessary to constantly add the carbon source to the soil. It is not preferable.
これら特定の炭素源の第１例としては、ベヘン酸、ステアリン酸、パルミチン酸、ミリスチン酸およびこれら物質の任意の混合物、またはこれら炭素源を含有する豚脂、カカオ脂、ヤシ油、パーム油、パーム核油天然物質などが例示できる。 Examples of these specific carbon sources include behenic acid, stearic acid, palmitic acid, myristic acid and any mixture of these substances, or pork fat, cocoa butter, coconut oil, palm oil containing these carbon sources, A palm kernel oil natural substance etc. can be illustrated.
また、特定の炭素源の第２例としては、ベヘニルアルコール、ステアリルアルコール、パルミチルアルコール、ミリスチルアルコールおよびこれら物質の任意の混合物、またはこれら炭素源を含有する豚脂、カカオ脂、ヤシ油、パーム油、パーム核油天然物質などが例示できる。 Further, as a second example of the specific carbon source, behenyl alcohol, stearyl alcohol, palmityl alcohol, myristyl alcohol and any mixture thereof, or pork fat, cocoa butter, coconut oil, palm oil containing these carbon sources And palm kernel oil natural substances.
さらに、特定の炭素源の第３例としては、脂肪族アミンとしてラウリルアミン、ミリスチルアミン、ステアリルアミン、ジパルミチルアミン、ジステアリルアミン、ジメチルベヘニルアミン、パルミチルプロピレンジアミン、ステアリルプロピレンジアミン、ミリスチルアミンアセテート、ステアリルアミンアセテート、ステアリン酸ジエチルアミノエチルアミド、ステアリン酸ジエチルアミノプロピルアミドおよびこれら脂肪族アミンの混合物、および塩などが例示される。また、特定の炭素源の第３例の脂肪酸アマイドとしてはラウリン酸アマイド、ミリスチン酸アマイド、パルミチン酸アマイド、ステアリン酸アマイド、オレイン酸アマイド、エルカ酸アマイド、エチレンビスステアリン酸アマイド、ジパルミチルケトン、ジステアリルケトン、およびこれら脂肪酸アマイドの混合物などが例示される。 Further, as a third example of a specific carbon source, laurylamine, myristylamine, stearylamine, dipalmitylamine, distearylamine, dimethylbehenylamine, palmitylpropylenediamine, stearylpropylenediamine, myristylamine as aliphatic amines Examples include acetate, stearylamine acetate, stearic acid diethylaminoethylamide, stearic acid diethylaminopropylamide and mixtures of these aliphatic amines, and salts. The fatty acid amide of the third example of the specific carbon source includes lauric acid amide, myristic acid amide, palmitic acid amide, stearic acid amide, oleic acid amide, erucic acid amide, ethylenebisstearic acid amide, dipalmityl ketone, Examples include distearyl ketone and a mixture of these fatty acid amides.
本発明に係る土壌と地下水の浄化組成物において、上記の第１例から第３例の炭素源は、単独で、あるいは２種以上を混合して含有しても良い。これらの炭素源の中では、製造コストの観点から炭素数が１４以上の脂肪酸が好ましく、特に融点が季節を通じて常温以上であり、取り扱いや保存の点から炭素数が１６以上の脂肪酸が好ましい。
本発明に係る土壌と地下水の浄化組成物中の炭素源の含有量は、１０〜９５重量％が好ましく、特に５５〜９５重量％が好ましい。
In the soil and groundwater purification composition according to the present invention, the carbon sources of the first to third examples may be contained alone or in admixture of two or more. Among these carbon sources, fatty acids having 14 or more carbon atoms are preferable from the viewpoint of production cost. Particularly, fatty acids having a melting point of normal temperature or higher throughout the season and 16 or more carbon atoms from the viewpoint of handling and storage are preferable.
The content of the carbon source in the soil and groundwater purification composition according to the present invention is preferably 10 to 95% by weight, particularly preferably 55 to 95% by weight.
本発明に係る浄化組成物に用いる界面活性剤とは、一般に脂肪酸、アルコール類を水中に可溶化させる物質群であり、陰イオン性界面活性剤と非イオン性界面活性剤の中から選択される。 The surfactant used in the purification composition according to the present invention is a group of substances that generally solubilize fatty acids and alcohols in water, and is selected from anionic surfactants and nonionic surfactants. .
本発明においては、非イオン性界面活性剤は、炭素源の可溶化及び本発明の効果の発現の観点から、親水性と疎水性の比率を示すＨ.Ｌ.Ｂ.値は４以上が好ましく、特にＨ.Ｌ.Ｂ.値は４〜２５の範囲が好ましい。Ｈ.Ｌ.Ｂ.値が４未満では脂肪酸などの可溶化能力が不足して好ましいものではない。また、Ｈ.Ｌ.Ｂ.値が２５を越えると、組成物である浄化組成物の融点を低下させたり、過剰な溶解性を示すため好ましいものではない。ただし、非イオン性界面活性剤はＨ.Ｌ.Ｂ.値が４未満、若しくはＨ.Ｌ.Ｂ.値が２５を越える範囲のものであっても本発明の効果を完全に阻害するものではなく、本発明の土壌と地下水の浄化組成物を構成することが可能である。なお、Ｈ.Ｌ.Ｂ.値は、Griffin法により算出したものである。 In the present invention, the nonionic surfactant preferably has an HLB value indicating a ratio of hydrophilicity to hydrophobicity of 4 or more from the viewpoint of solubilization of the carbon source and expression of the effects of the present invention. In particular, the H.L.B. value is preferably in the range of 4-25. If the HLB value is less than 4, the solubilizing ability of fatty acids is insufficient, which is not preferable. On the other hand, if the HLB value exceeds 25, the melting point of the cleaning composition as the composition is lowered or excessive solubility is exhibited, which is not preferable. However, the nonionic surfactant does not completely inhibit the effects of the present invention even if the HLB value is less than 4 or the HLB value exceeds 25. It is possible to constitute the soil and groundwater purification composition of the present invention. The HLB value is calculated by the Griffin method.
また、本発明における界面活性剤の添加量は、組成物全体である浄化組成物に対して２重量％以上、５５重量％以下が好ましい。界面活性剤の添加量が２重量％より小さいと脂肪酸などの可溶化能力が不足して好ましいものではない。反対に、界面活性剤の添加量が５５重量％より大きいと、組成物である浄化組成物としての融点が低下し、常温で、または土壌中や地下水中で液体として存在し、結果的に常時界面活性剤を土壌中へ添加する必要があり、好ましいものではない。ただし、界面活性剤の添加量が２重量％より小さい、若しくは５５重量％より大きい範囲であっても本発明の効果を完全に阻害するものではなく、本発明の土壌と地下水の浄化組成物を構成することが可能である。 The addition amount of the surfactant in the present invention is preferably 2% by weight or more and 55% by weight or less with respect to the purification composition as the whole composition. When the addition amount of the surfactant is less than 2% by weight, the solubilizing ability of fatty acid is insufficient, which is not preferable. On the other hand, when the amount of the surfactant added is greater than 55% by weight, the melting point as the purification composition, which is a composition, decreases and exists as a liquid at room temperature or in soil or groundwater. It is necessary to add a surfactant to the soil, which is not preferable. However, even if the addition amount of the surfactant is less than 2% by weight or more than 55% by weight, the effect of the present invention is not completely inhibited, and the soil and groundwater purification composition of the present invention is not used. It is possible to configure.
以上の要件を満たす好適な界面活性剤としては、生分解性および微生物への安全性（ここで安全性とは殺菌作用の少ないことをいう。）の点から陰イオン性界面活性剤または非イオン性界面活性剤である。 Suitable surfactants that satisfy the above requirements are anionic surfactants or nonionic surfactants in terms of biodegradability and safety to microorganisms (herein, safety refers to less bactericidal action). Surfactant.
陰イオン性界面活性剤としては、アルキル硫酸エステル塩であるラウリル硫酸ナトリウム、ラウリル硫酸トリエタノールアミン、およびラウリル硫酸アンモニウムなどが例示され、ポリオキシエチレンアルキルエーテル硫酸エステル塩であるポリオキシエチレンラウリルエーテル硫酸ナトリウムが例示され、アルキルベンゼンスルホン酸塩であるドデシルベンゼンスルホン酸ナトリウム、ジアルキルスルホコハク酸ナトリウム、およびアルキルジフェニルエーテルジスルフォン酸ナトリウムなどが例示され、脂肪酸石鹸であるステアリン酸ナトリウム石鹸、オレイン酸ナトリウム石鹸、およびヒマシ油カリ石鹸などが例示され、そしてナフタレンスルフォン酸ホルマリン縮合物などが例示される。 Examples of the anionic surfactant include sodium lauryl sulfate, which is an alkyl sulfate salt, triethanolamine lauryl sulfate, and ammonium lauryl sulfate, and polyoxyethylene lauryl ether sodium sulfate, which is a polyoxyethylene alkyl ether sulfate salt. And alkyl benzene sulfonates such as sodium dodecylbenzene sulfonate, sodium dialkyl sulfosuccinate, and sodium alkyl diphenyl ether disulfonate, and fatty acid soaps such as sodium stearate soap, sodium oleate soap, and castor oil Examples include potash soap, and naphthalene sulfonic acid formalin condensate.
一方、非イオン性界面活性剤としてはポリオキシエチレンアルキルエーテルであるポリオキシエチレンラウリルエーテル、ポリオキシエチレンセチルエーテル、ポリオキシエチレンステアリルエーテル、ポリオキシエチレンオレイルエーテル、ポリオキシエチレン高級アルコールエーテル、ポリオキシエチレンミリスチルエーテル、およびポリオキシエチレンジスチレン化フェニルエーテルなどが例示され、ソルビタン脂肪酸エステルであるソルビタンモノラウレート、ソルビタンモノパルミテート、ソルビタンモノステアレート、ソルビタンモノオレエート、およびソルビタンジステアレートなどが例示され、ポリオキシエチレンソルビタン脂肪酸エステルであるポリオキシエチレンソルビタンモノヤシ脂肪酸エステル、ポリオキシエチレンソルビタンラウレート、ポリオキシエチレンソルビタンモノパルミテート、ポリオキシエチレンソルビタンモノステアレート、ポリオキシエチレンソルビタントリステアレート、ポリオキシエチレンソルビタントリイソステアレート、ポリオキシエチレンソルビタンモノオレエート、およびテトラオレイン酸ポリオキシエチレンソルビットなどが例示される。 On the other hand, nonionic surfactants include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene higher alcohol ether, polyoxyethylene Examples include ethylene myristyl ether and polyoxyethylene distyrenated phenyl ether, such as sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan monooleate, and sorbitan distearate, which are sorbitan fatty acid esters. Exemplified, polyoxyethylene sorbitan mono-fatty acid ester polyoxyethylene sorbitan fatty acid ester, polyoxyethylene Sorbitan laurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan triisostearate, polyoxyethylene sorbitan monooleate, and polytetraoleic acid poly Examples include oxyethylene sorbitol.
これら界面活性剤のうち生分解性および微生物への安全性（少ない殺菌作用）の点からより好ましくは非イオン性界面活性剤であり、このうち特に脂肪酸を可溶化する能力の高いポリオキシエチレンソルビタン脂肪酸エステル、およびソルビタン脂肪酸エステルがより好ましい。 Of these surfactants, nonionic surfactants are more preferable from the viewpoint of biodegradability and safety to microorganisms (less bactericidal action), and among these, polyoxyethylene sorbitan has a particularly high ability to solubilize fatty acids. Fatty acid esters and sorbitan fatty acid esters are more preferred.
これら特定の界面活性剤は本発明に係る浄化組成物に用いる炭素源などを効果的に乳化することにより土壌中と地下水中へ溶解させることができ、添加量を制御することでその溶解量を任意に選択可能である。 These specific surfactants can be dissolved in soil and groundwater by effectively emulsifying the carbon source used in the purification composition according to the present invention, and the amount of dissolution can be controlled by controlling the amount added. It can be arbitrarily selected.
また、同時にこれら界面活性剤は微生物と本発明に用いる炭素源などとの付着性、すなわち親水性を改善する。この結果、界面活性剤は微生物反応の効率を向上させ、疎水性である有機塩素化合物の水系への溶解を促進させるため、特に粘土質中に保持された有機塩素化合物の浄化にも好適である。 At the same time, these surfactants improve adhesion between the microorganism and the carbon source used in the present invention, that is, hydrophilicity. As a result, the surfactant improves the efficiency of the microbial reaction and promotes the dissolution of hydrophobic organochlorine compounds in aqueous systems, and is therefore particularly suitable for the purification of organochlorine compounds retained in clay. .
これら特定の界面活性剤の炭素源への添加量は、組成物全量に対して２重量％以上５５重量％以下が好ましい。この界面活性剤の添加量が５５重量％を超えると炭素源の過剰溶解を招き、好ましいものではない。一方、界面活性剤の添加量が２重量％未満では所定の汚染地域に炭素源を供給するために多少多くの供給ポイントを形成する必要があるため好ましいものではない。ただし、界面活性剤の炭素源への添加量が２重量％より小さく、若しくは５５重量％より大きい範囲であっても本発明の効果を完全に阻害するものではなく、本発明の土壌と地下水の浄化組成物を構成することが可能である。 The amount of the specific surfactant added to the carbon source is preferably 2% by weight or more and 55% by weight or less based on the total amount of the composition. If the amount of the surfactant added exceeds 55% by weight, the carbon source is excessively dissolved, which is not preferable. On the other hand, if the addition amount of the surfactant is less than 2% by weight, it is not preferable because it is necessary to form more supply points in order to supply the carbon source to a predetermined contaminated area. However, even if the amount of the surfactant added to the carbon source is less than 2% by weight or more than 55% by weight, the effect of the present invention is not completely inhibited. It is possible to constitute a purification composition.
以上のように、本発明に係る土壌と地下水の浄化組成物および浄化方法の特徴は、特定分子構造かつ特定炭素数を有する炭素源などと、特定群から選択された界面活性剤とを特定比率で共存させることにより、従来技術の課題を確実に解決することができる点であり、この点が従来技術との相違点である。 As described above, the soil and groundwater purification composition and the purification method according to the present invention are characterized by a specific ratio between a carbon source having a specific molecular structure and a specific number of carbons, and a surfactant selected from a specific group. By coexisting with the above, the problem of the prior art can be surely solved, and this is the difference from the prior art.
本発明に係る土壌と地下水の浄化組成物にあらかじめ微生物の栄養源となる無機性窒素源、無機性リン源を固体として含有させることは好ましい手段である。このように無機性窒素源、無機性リン源を浄化組成物に含有させることにより、本発明に係る浄化組成物が生分解を受ける際に、または界面活性剤により溶解される際に、炭素源とともに無機性窒素源、無機性リン源も徐放され、微生物の増殖に最低限必須である炭素、窒素、リンの三元素を同時に供給することが可能となる。これら無機性窒素源としては硫酸アンモニウム、硝酸アンモニウムなどが例示され、無機性リン源としてはリン酸二水素カリウム、リン酸水素カルシウムなどが例示される。 It is a preferable means that the soil and groundwater purification composition according to the present invention contains an inorganic nitrogen source and an inorganic phosphorus source, which are nutrient sources for microorganisms, as solids in advance. When the purification composition according to the present invention is biodegraded or dissolved by the surfactant, the carbon source is obtained by including the inorganic nitrogen source and the inorganic phosphorus source in the purification composition. At the same time, an inorganic nitrogen source and an inorganic phosphorus source are also released gradually, and it becomes possible to simultaneously supply three elements of carbon, nitrogen and phosphorus which are essential for the growth of microorganisms. Examples of these inorganic nitrogen sources include ammonium sulfate and ammonium nitrate, and examples of inorganic phosphorus sources include potassium dihydrogen phosphate and calcium hydrogen phosphate.
本発明に係る土壌と地下水の浄化組成物にあらかじめ比重を調整するための比重調整無機材料を固体として含有させて浄化組成物に沈降性を持たせ、添加された浄化組成物を沈降させて帯水層深部に確実に供給することは好ましい手段である。好ましい比重調整のための比重調整無機材料としては、炭酸カルシウム、硫酸バリウム、ケイ酸カルシウム、酸化亜鉛、鉄粉などが挙げられ、比重を１以上に調整することにより、特に地下水へ添加する場合には、帯水層の底まで本発明の土壌と地下水の浄化組成物を添加することができる。 The soil and groundwater purification composition according to the present invention contains a specific gravity-adjusting inorganic material for adjusting the specific gravity in advance as a solid so that the purification composition has a settling property, and the added purification composition is allowed to settle. It is a preferable means to surely supply the deep water layer. Specific examples of the specific gravity adjusting inorganic material for adjusting the specific gravity include calcium carbonate, barium sulfate, calcium silicate, zinc oxide, iron powder, and the like, especially when adding to groundwater by adjusting the specific gravity to 1 or more. The soil and groundwater purification composition of the present invention can be added to the bottom of the aquifer.
本発明に係る土壌と地下水の浄化組成物を土壌中や地下水中へ添加する方法としては、地上から地下方向へ穿設された井戸に代表される縦穴、又は地表に対して斜行した穴、若しくは連続溝を形成し、その穴や溝から浄化組成物を直接土壌中や地下水中へ添加する方法がある。地上から穴または溝を設ける手段としては土木工事に広く用いられる穿設手段を用いて容易になし得る。穿設手段の一例としては、穴を穿つ場合にはボーリングマシンを用いたボーリング手段があり、溝を掘る場合にはソイルセメント工法（例えば、特許文献４参照。）や地中鉛直遮水壁工法（例えば、特許文献５および特許文献６参照。）などがある。 As a method of adding the soil and groundwater purification composition according to the present invention into the soil or groundwater, vertical holes represented by wells drilled in the underground direction from the ground, or holes inclined to the ground surface, Alternatively, there is a method in which a continuous groove is formed and the purification composition is directly added to soil or groundwater from the hole or groove. As a means for providing a hole or groove from the ground, a drilling means widely used in civil engineering work can be used easily. As an example of the drilling means, there is a boring means using a boring machine when drilling a hole, and when digging a groove, a soil cement method (for example, see Patent Document 4) or an underground vertical impermeable wall method. (For example, refer to Patent Document 5 and Patent Document 6).
また、建築物や障害物の直下を浄化したい場合には、角度を設けた斜行孔（斜めボーリング）を形成する土木手法を用いることにより、そのような建築物等の地下に水平孔を形成することができ、その孔を通じて本発明の土壌と地下水の浄化組成物を添加することができる。 In addition, if you want to purify directly under buildings and obstacles, use a civil engineering technique to form oblique holes (sloped boring) to form horizontal holes in the basement of such buildings. The soil and groundwater purification composition of the present invention can be added through the pores.
次に実施例によって本発明をさらに詳しく説明するが、本発明はこれら実施例に限定されるものではない。
なお、以下の実施例においては、トリクロロエチレン、テトラクロロエチレン濃度の測定はガスクロマトグラフ（ＧＣ−１７Ａ、（株）島津製作所製）を用い、検出は電子捕獲検出器（ＥＣＤ）および水素炎イオン化検出器（ＦＤＩ）を用いて分析した。測定カラムはＤＢ−６２４（３０ｍ×０.０２５ｍｍＩＤ、膜厚１.４５ミクロン）を用い、カラム温度は８０℃とした。
トリクロロエチレン、テトラクロロエチレン濃度の除去率は、
（１−（井戸通過後の濃度／井戸通過前の濃度））×１００ （％）
により算出した。
また、ＴＯＣ（全有機体窒素濃度）の測定は、１９９７年度版下水道試験法の燃焼酸化―赤外線式ＴＯＣ分析法により行った。このときの測定器には、（株）島津製作所製ＴＯＣ５０００Ａを用いた。
また、酸化還元電位は１９９７年度版下水道試験法により行い、白金基準電極を用いヒドロキノン容積を酸化還元電位標準液として測定した。このときの測定器には（株）堀場製作所製Ｆ２３を用いた。
EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples.
In the following examples, the gas chromatograph (GC-17A, manufactured by Shimadzu Corporation) was used for the measurement of trichlorethylene and tetrachlorethylene concentrations, and the detection was performed by an electron capture detector (ECD) and a flame ionization detector (FDI). ). The measurement column was DB-624 (30 m × 0.025 mm ID, film thickness 1.45 microns), and the column temperature was 80 ° C.
The removal rate of trichlorethylene and tetrachlorethylene concentration is
(1- (concentration after passing through well / concentration before passing through well)) × 100 (%)
Calculated by
The TOC (total organic nitrogen concentration) was measured by the combustion oxidation-infrared TOC analysis method of the 1997 version of the sewerage test method. As a measuring instrument at this time, TOC5000A manufactured by Shimadzu Corporation was used.
The oxidation-reduction potential was measured by a 1997 sewer test method, and the volume of hydroquinone was measured using a platinum reference electrode as the oxidation-reduction potential standard solution. F23 manufactured by Horiba, Ltd. was used as a measuring instrument at this time.
《実施例１》
実施例１の土壌と地下水のための浄化組成物は、以下のように作製した。
Example 1
The purification composition for soil and groundwater of Example 1 was prepared as follows.
炭素源として脂肪酸であるステアリン酸６５重量％とパルミチン酸２０重量％、および界面活性剤として非イオン性界面活性剤のポリオキシエチレンソルビタンモノオレエート（Ｈ.Ｌ.Ｂ.：１５.０）１５重量％の組成物を１００重量部とし、当該組成物に硫酸アンモニウム２重量部、リン酸二水素カリウム０.５重量部、炭酸カルシウム１０重量部を混合し、押出し造粒機にて、直径２ｍｍ、長さ５ｍｍのペレット状の実施例１の浄化組成物を作製した。 65% by weight stearic acid as a carbon source and 20% by weight palmitic acid as a carbon source, and a nonionic surfactant polyoxyethylene sorbitan monooleate (HLB: 15.0) 15 as a surfactant The composition of 100% by weight is 100 parts by weight, 2 parts by weight of ammonium sulfate, 0.5 part by weight of potassium dihydrogen phosphate, and 10 parts by weight of calcium carbonate are mixed in the composition. A purification composition of Example 1 in the form of pellets having a length of 5 mm was prepared.
上記のように作製した浄化組成物を地下水の流れている位置に設けた内径１５０ｍｍ、全長２２ｍ（うち帯水層部分８ｍ）の井戸に１８ｋｇを添加し、帯水層中に全量を浸漬させた。当該井戸が設けられた位置の地下水の上流側と下流側、すなわち当該井戸を通過する前後のトリクロロエチレン濃度を測定し、その変化を計測した。井戸を通過する前後のトリクロロエチレン濃度を測定するために、当該井戸へ到達前（上流側）１ｍ地点と、当該井戸を通過後（下流側）１ｍ地点で採水して実施した。その結果、添加から１０３日後の井戸通過前後でのトリクロロエチレンの除去率は８７％であった。 18 kg was added to a well having an inner diameter of 150 mm and a total length of 22 m (of which the aquifer portion was 8 m) provided at the position where the groundwater was flowing, and the entire amount was immersed in the aquifer. . The trichlorethylene concentration before and after passing through the well in the upstream and downstream sides of the groundwater at the position where the well was provided was measured, and the change was measured. In order to measure the trichlorethylene concentration before and after passing through the well, water was sampled at a point 1 m before reaching the well (upstream side) and at a point 1 m after passing the well (downstream side). As a result, the removal rate of trichlorethylene before and after passing through the well 103 days after the addition was 87%.
実施例１の浄化組成物の添加直後から、有機物成分の地下水中への溶出が十分に認められ、地下水中の酸化還元電位は低下し、添加から１１日後には−２７０ｍＶと嫌気状態が効率的に形成された。この計測には、水素を標準電位とした電極式酸化還元電位測定器を用いた。 Immediately after the addition of the purification composition of Example 1, the elution of organic components into the ground water was sufficiently observed, the redox potential in the ground water decreased, and anaerobic state was effective at −270 mV 11 days after the addition. Formed. For this measurement, an electrode-type redox potential measuring device using hydrogen as a standard potential was used.
また、土壌中には有機物の濃度（ＴＯＣ）の１／１０オーダーの窒素、さらに窒素濃度の１／１０オーダーのリンの溶出が同時に観測され、微生物増殖に必要な三元素の供給が速やかに実現していることが確認された。 In addition, elution of 1 / 10th order nitrogen of organic matter concentration (TOC) and phosphorus of 1 / 10th order nitrogen concentration was simultaneously observed in the soil, and the supply of the three elements necessary for microbial growth was realized quickly. It was confirmed that
なお、比較例として、実施例１の浄化組成物から界面活性剤成分を除去した構成の別の組成物を作製し、前述の実施例１の浄化組成物に対する実験地点近傍で同様の実験を行った。その結果、添加から１１日後の酸化還元電位は＋８０ｍＶ程度であり、好気状態となっており、１０３日後のトリクロロエチレン除去率は３５％と低い値にとどまっていた。また、比較例においては、窒素およびリンの濃度上昇はほとんど認められなかった。このことから、実施例１の浄化組成物における界面活性剤と脂肪酸の共存により、脂肪酸の溶出性が向上し、トリクロロエチレン除去率が大幅に向上したことが確認できた。 As a comparative example, another composition having a configuration in which the surfactant component was removed from the purification composition of Example 1 was prepared, and a similar experiment was performed in the vicinity of the experimental point for the purification composition of Example 1 described above. It was. As a result, the oxidation-reduction potential 11 days after the addition was about +80 mV and was in an aerobic state, and the trichlorethylene removal rate after 103 days remained at a low value of 35%. Further, in the comparative examples, almost no increase in nitrogen and phosphorus concentrations was observed. From this, it was confirmed that the coexistence of the surfactant and the fatty acid in the purification composition of Example 1 improved the elution of the fatty acid and greatly improved the trichlorethylene removal rate.
《実施例２》
実施例２の土壌と地下水のための浄化組成物は、以下のように作製した。
Example 2
The purification composition for soil and groundwater of Example 2 was prepared as follows.
脂肪酸としてミリスチルアルコール７０重量％、パルミチン酸１８重量％、および界面活性剤として陰イオン性界面活性剤のポリオキシエチレンラウリルエーテル硫酸ナトリウム５重量％と非イオン性界面活性剤のソルビタンモノステアレート（Ｈ.Ｌ.Ｂ.：４.７）７重量物％の組成物を１００重量部とし、当該組成物に硫酸アンモニウム２重量部、リン酸二水素カリウム０.５重量部、炭酸カルシウム２０重量部を混合し、前述の実施例１で用いた押出し造粒機にて、直径２ｍｍ、長さ５ｍｍのペレット状の実施例２の浄化組成物を作製した。 70% by weight of myristyl alcohol as fatty acid, 18% by weight of palmitic acid, 5% by weight of anionic surfactant sodium polyoxyethylene lauryl ether sulfate as a surfactant, and sorbitan monostearate (H L.B .: 4.7) 100 parts by weight of a 7% by weight composition, and 2 parts by weight of ammonium sulfate, 0.5 parts by weight of potassium dihydrogen phosphate, and 20 parts by weight of calcium carbonate are mixed with the composition. And the purification composition of Example 2 of the pellet form of diameter 2mm and length 5mm was produced with the extrusion granulator used in the above-mentioned Example 1.
上記のように作製した浄化組成物を内径２５０ｍｍ、全長２０ｍ（うち帯水層部分１３ｍ）の井戸に３５ｋｇを添加し、帯水層中に全量を浸漬させた。前述の実施例１と同様に、当該井戸を通過する前後のテトラクロロエチレン濃度を測定し、その変化を計測した。井戸を通過する前後のテトラクロロエチレン濃度を測定するために、当該井戸へ到達前１ｍ地点と、当該井戸を通過後１ｍ地点で採水して実施した。その結果、添加から９５日後の井戸通過前後でのテトラクロロエチレンの除去率は９５％であった。 35 kg of the purification composition prepared as described above was added to a well having an inner diameter of 250 mm and a total length of 20 m (including aquifer portion 13 m), and the entire amount was immersed in the aquifer. Similar to Example 1 described above, the concentration of tetrachlorethylene before and after passing through the well was measured, and the change was measured. In order to measure the concentration of tetrachlorethylene before and after passing through the well, water was sampled at 1 m before reaching the well and 1 m after passing through the well. As a result, the removal rate of tetrachlorethylene before and after passing through the well 95 days after the addition was 95%.
実施例２の浄化組成物の添加直後から、有機物成分の地下水中への溶出が十分に認められ、地下水中の酸化還元電位は低下し、添加から８日後には−１７０ｍＶと嫌気状態が効率的に形成された。この計測には、前述の実施例１と同様に水素を標準電位とした電極式酸化還元電位測定器を用いた。 Immediately after the addition of the purification composition of Example 2, elution of organic components into the ground water was sufficiently observed, the redox potential in the ground water decreased, and anaerobic state was effective at −170 mV after 8 days from the addition. Formed. For this measurement, an electrode-type oxidation-reduction potential measuring device using hydrogen as a standard potential was used as in Example 1 described above.
また、土壌中には有機物の濃度（ＴＯＣ）の１／１０オーダーの窒素、さらに窒素濃度の１／１０オーダーのリンの溶出が同時に観測され、微生物増殖に必要な三元素の供給が速やかに実現していることが確認された。 In addition, elution of 1 / 10th order nitrogen of organic matter concentration (TOC) and phosphorus of 1 / 10th order nitrogen concentration was simultaneously observed in the soil, and the supply of the three elements necessary for microbial growth was realized quickly. It was confirmed that
なお、比較例として、実施例２の浄化組成物における界面活性剤成分を陽イオン性界面活性剤であるステアリルトリメチルアンモニウムクロライドに全量置換した組成物を作製した。そして、前述の実施例２の浄化組成物に対する実験地点から採取した地下水および土壌を種菌として、バイアル瓶によるテトラクロロエチレンの嫌気分解室内実験（２５℃）を実施した。実験条件は、嫌気状態形成のためＮ２、ＣＯ２の混合ガス（９：１）で気層部を１０分間パージし、ブチルゴムとアルミ栓により密封した。試験温度は２０℃とし、気層部のガスを前記方法により分析した。また、酸化還元電位、標準寒天培地による微生物分析（生菌数測定）も同時に行った。その結果、酸化還元電位の低下は認められたものの、テトラクロロエチレン濃度は殆んど変化しなかった。また、上記比較例の組成物では、バイアル瓶内の全菌数が大幅に低下しており、陽イオン性界面活性剤は生分解および生物分解反応による土壌と地下水の浄化に対しては好適ではないことを確認した。 As a comparative example, a composition was prepared in which the surfactant component in the purification composition of Example 2 was completely replaced with stearyltrimethylammonium chloride, which is a cationic surfactant. Then, an experiment (25 ° C.) of tetrachloroethylene in an anaerobic decomposition chamber using a vial was performed using the groundwater and soil collected from the experimental point for the purification composition of Example 2 as an inoculum. The experimental conditions were that the gas layer was purged with a mixed gas of N 2 and CO 2 (9: 1) for 10 minutes to form an anaerobic state, and sealed with butyl rubber and an aluminum plug. The test temperature was 20 ° C., and the gas in the air layer was analyzed by the above method. In addition, microbiological analysis (viable cell count measurement) using a redox potential and a standard agar medium was simultaneously performed. As a result, although a reduction in redox potential was observed, the tetrachlorethylene concentration hardly changed. Further, in the composition of the above comparative example, the total number of bacteria in the vial is greatly reduced, and the cationic surfactant is suitable for the purification of soil and groundwater by biodegradation and biodegradation reactions. Confirmed that there is no.
《実施例３》
実施例３の土壌と地下水のための浄化組成物は、以下のように作製した。
Example 3
The purification composition for soil and groundwater of Example 3 was prepared as follows.
炭素源としてジパルミチルアミン７５重量％、および界面活性剤として陰イオン性界面活性剤のポリオキシエチレンラウリルエーテル硫酸ナトリウム２５重量％の組成物を１００重量部とし、当該組成物に硫酸アンモニウム２重量部、リン酸二水素カリウム０.５重量部、炭酸カルシウム１０重量部を混合し、前述の実施例１で用いた押出し造粒機にて、直径２ｍｍ、長さ５ｍｍのペレット状の実施例３の浄化組成物を作製した。 100 parts by weight of a composition containing 75% by weight of dipalmitylamine as a carbon source and 25% by weight of sodium anionic surfactant polyoxyethylene lauryl ether sulfate as a surfactant, and 2 parts by weight of ammonium sulfate in the composition Then, 0.5 parts by weight of potassium dihydrogen phosphate and 10 parts by weight of calcium carbonate were mixed and the pellets of Example 3 in the form of pellets having a diameter of 2 mm and a length of 5 mm were obtained using the extrusion granulator used in Example 1 described above. A purification composition was prepared.
上記のように作製した浄化組成物を内径１５０ｍｍ、全長１４ｍ（うち帯水層部分６ｍ）の井戸に１８ｋｇを添加し、帯水層中に全量を浸漬させた。前述の実施例１と同様に、当該井戸を通過する前後のトリクロロエチレン濃度を測定し、その変化を計測した。井戸を通過する前後のトリクロロエチレン濃度を測定するために、当該井戸へ到達前１ｍ地点と、当該井戸を通過後１ｍ地点で採水して実施した。その結果、添加から１０３日後の井戸通過前後でのトリクロロエチレンの除去率は７１％であった。 18 kg of the purified composition prepared as described above was added to a well having an inner diameter of 150 mm and a total length of 14 m (including aquifer portion 6 m), and the entire amount was immersed in the aquifer. Similar to Example 1 described above, the trichlorethylene concentration before and after passing through the well was measured, and the change was measured. In order to measure the trichlorethylene concentration before and after passing through the well, water was sampled at 1 m before reaching the well and 1 m after passing through the well. As a result, the removal rate of trichlorethylene before and after passing through the well 103 days after the addition was 71%.
実施例３の浄化組成物の添加直後から、有機物成分の地下水中への溶出が十分に認められ、地下水中の酸化還元電位は低下し、添加から１１日後には−１９０ｍＶと嫌気状態が効率的に形成された。この計測には、前述の実施例１と同様に水素を標準電位とした電極式酸化還元電位測定器を用いた。 Immediately after the addition of the purification composition of Example 3, elution of organic components into the groundwater was sufficiently observed, the redox potential in the groundwater decreased, and anaerobic state was effective at −190 mV 11 days after the addition. Formed. For this measurement, an electrode-type oxidation-reduction potential measuring device using hydrogen as a standard potential was used as in Example 1 described above.
また、土壌中では、有機物の濃度（ＴＯＣ）の１／１０オーダーの窒素、さらに窒素濃度の１／１０オーダーのリンの溶出が同時に観測され、微生物増殖に必要な三元素の供給が速やかに実現していることが確認された。 In addition, in the soil, elution of nitrogen of 1/10 order of organic substance concentration (TOC) and phosphorus of 1/10 order of nitrogen concentration is simultaneously observed, and supply of three elements necessary for microbial growth is realized quickly. It was confirmed that
なお、比較例として、実施例３の浄化組成物から界面活性剤成分を除去した別の組成物を作製し、前述の実施例３の浄化組成物に対する実験地点近傍で同様の実験を行った。その結果、添加から１１日後の酸化還元電位が＋６０ｍＶ程度で好気状態であり、トリクロロエチレン除去率は２２％と低い値にとどまっていた。また、比較例においては、窒素およびリンの濃度上昇はほとんど認められなかった。このことから、実施例３の浄化組成物における界面活性剤と炭素源の共存により、炭素源の溶出性が向上し、トリクロロエチレン除去率が大幅に向上したことが確認できた。 As a comparative example, another composition was prepared by removing the surfactant component from the purification composition of Example 3, and a similar experiment was performed in the vicinity of the experimental point for the purification composition of Example 3 described above. As a result, the oxidation-reduction potential 11 days after the addition was in an aerobic state at about +60 mV, and the trichlorethylene removal rate remained at a low value of 22%. Further, in the comparative examples, almost no increase in nitrogen and phosphorus concentrations was observed. From this, it was confirmed that the coexistence of the surfactant and the carbon source in the purification composition of Example 3 improved the elution of the carbon source and greatly improved the trichlorethylene removal rate.
なお、上記の各実施例で示した各種材料の添加量は一例であり、その値の増減は対象となる環境や許容コストなどの諸条件により、本発明の主眼を損なわない範囲で変更できることはいうまでもない。 In addition, the addition amount of various materials shown in each of the above-mentioned examples is an example, and the increase or decrease in the value can be changed within a range that does not impair the main point of the present invention, depending on various conditions such as the target environment and allowable cost. Needless to say.
また、上記の各実施例では特に示さなかったが、微生物反応を促進する各種添加剤、別途培養した微生物集積培養液、還元状態を進めるための鉄粉などの添加は本発明の主眼を損なわない範囲で任意になし得ることはいうまでもない。 Although not particularly shown in each of the above examples, the addition of various additives for promoting microbial reaction, separately cultured microbial accumulation medium, iron powder for promoting the reduction state, etc. does not impair the gist of the present invention. Needless to say, the range can be arbitrarily set.
本発明に係る土壌と地下水の浄化組成物および浄化方法は、バイオレメーデーションによる揮発性有機塩素化合物の低減方法として有用である。 The soil and groundwater purification composition and purification method according to the present invention are useful as a method for reducing volatile organochlorine compounds by bioremediation.
Claims (8)
（ｉ）炭素数が１４以上の脂肪酸
（ii）炭素数が１４以上のアルコール
（iii）炭素数が１２以上の脂肪族アミン、または炭素数が１２以上の脂肪酸アマイド A solid purification composition used for bioremediation of soil and groundwater, the purification composition having a carbon source and a nonionic surfactant, wherein the nonionic surfactant is hydrophilic The soil and groundwater purification composition has an HLB value of 4 or more, which indicates a hydrophobic ratio, and the carbon source is at least one selected from the following (i) to (iii).
(I) a fatty acid having 14 or more carbon atoms (ii) an alcohol having 14 or more carbon atoms (iii) an aliphatic amine having 12 or more carbon atoms, or a fatty acid amide having 12 or more carbon atoms
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003297491A JP3817534B2 (en) | 2003-08-21 | 2003-08-21 | Soil and groundwater purification composition and purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003297491A JP3817534B2 (en) | 2003-08-21 | 2003-08-21 | Soil and groundwater purification composition and purification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005066425A JP2005066425A (en) | 2005-03-17 |
| JP3817534B2 true JP3817534B2 (en) | 2006-09-06 |
Family
ID=34403330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003297491A Expired - Lifetime JP3817534B2 (en) | 2003-08-21 | 2003-08-21 | Soil and groundwater purification composition and purification method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3817534B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008049209A (en) * | 2006-03-31 | 2008-03-06 | Mitsui Eng & Shipbuild Co Ltd | Purification method of organic chlorine compound contaminant |
| JP5587453B1 (en) * | 2013-03-29 | 2014-09-10 | パナソニック株式会社 | Microbial composition |
| JP6104122B2 (en) * | 2013-10-02 | 2017-03-29 | ケミカルグラウト株式会社 | Contaminated soil purification method |
| JP6193105B2 (en) * | 2013-12-06 | 2017-09-06 | 株式会社テルナイト | Deformation following type water shielding material |
-
2003
- 2003-08-21 JP JP2003297491A patent/JP3817534B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005066425A (en) | 2005-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Horn et al. | Plasticizer metabolites in the environment | |
| JP2007002168A (en) | Foaming agent for foam-shielding method | |
| Xu et al. | Inhibition of hydrogen sulfide generation from disposed gypsum drywall using chemical inhibitors | |
| Bayless et al. | Biodegradation of six haloacetic acids in drinking water | |
| JP3817534B2 (en) | Soil and groundwater purification composition and purification method | |
| EP1155752A1 (en) | Method and apparatus for purifying polluted substances containing halogenated organic compound | |
| JP4529667B2 (en) | Purification method and additive for contaminated soil and contaminated water | |
| Mohan et al. | Bioslurry phase degradation of di-ethyl phthalate (DEP) contaminated soil in periodic discontinuous mode operation: Influence of bioaugmentation and substrate partition | |
| JP2004202357A (en) | Method for purifying organic compound-polluted object | |
| JP2009090183A (en) | Cleaning method of soil and ground water, cultivation method of microorganism, and nutrient | |
| KR101796239B1 (en) | Remediation method for oil-contaminated soil | |
| US5759402A (en) | Methods for the remediation of polluted soils | |
| JP4359174B2 (en) | Environmental purification method | |
| Marttinen | Potential of municipal sewage treatment plants to remove bis (2-ethylhexyl) phthalate | |
| JP2018175529A (en) | Decomposition accelerator, and environmental cleanup method using the decomposition accelerator | |
| JP2006116420A (en) | Method for treating chemical contaminant | |
| JP3815464B2 (en) | Soil and groundwater purification composition | |
| EP2885972A1 (en) | Method for selectively inhibiting sulfate-reducing bacterium, gypsum composition capable of inhibiting proliferation of sulfate-reducing bacterium by said method, gypsum-type solidifying material, and gypsum-type building material | |
| JP5481846B2 (en) | Method for purifying contaminated soil or groundwater | |
| JP2011025105A (en) | Method of decontaminating soil and underground water contaminated with organic chlorine compound | |
| JP2006150278A (en) | Method for decontaminating contaminated soil | |
| JP5587453B1 (en) | Microbial composition | |
| JP4547962B2 (en) | Method for purifying contaminated soil and groundwater | |
| JP2004202364A (en) | Soil treatment method | |
| JP2004195322A (en) | Soil or ground water treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20051201 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20051220 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060216 Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20060216 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20060216 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060516 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060612 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3817534 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090616 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100616 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110616 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110616 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120616 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130616 Year of fee payment: 7 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130616 Year of fee payment: 7 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |