CN106076261A - A kind of adsorbent for heavy metal and preparation method and application - Google Patents
A kind of adsorbent for heavy metal and preparation method and application Download PDFInfo
- Publication number
- CN106076261A CN106076261A CN201610439333.3A CN201610439333A CN106076261A CN 106076261 A CN106076261 A CN 106076261A CN 201610439333 A CN201610439333 A CN 201610439333A CN 106076261 A CN106076261 A CN 106076261A
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- Prior art keywords
- graphene
- heavy metal
- adsorbent
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 70
- 239000003463 adsorbent Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 62
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011246 composite particle Substances 0.000 claims abstract description 52
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 49
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 49
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 49
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 49
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 49
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 29
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 21
- 238000000975 co-precipitation Methods 0.000 claims abstract description 16
- 159000000003 magnesium salts Chemical class 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- -1 trithiocyanuric acid trisodium salts Chemical class 0.000 claims abstract description 9
- 239000003643 water by type Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000002351 wastewater Substances 0.000 claims description 23
- 239000007864 aqueous solution Substances 0.000 claims description 21
- NYVOYAFUSJONHU-UHFFFAOYSA-K trisodium;1,3,5-triazine-2,4,6-trithiolate Chemical compound [Na+].[Na+].[Na+].[S-]C1=NC([S-])=NC([S-])=N1 NYVOYAFUSJONHU-UHFFFAOYSA-K 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 239000006004 Quartz sand Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 8
- 229910052793 cadmium Inorganic materials 0.000 claims description 7
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000012266 salt solution Substances 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000000908 ammonium hydroxide Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 239000002243 precursor Substances 0.000 claims description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229940056319 ferrosoferric oxide Drugs 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 2
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 2
- CRGGPIWCSGOBDN-UHFFFAOYSA-N magnesium;dioxido(dioxo)chromium Chemical compound [Mg+2].[O-][Cr]([O-])(=O)=O CRGGPIWCSGOBDN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 229910001948 sodium oxide Inorganic materials 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 150000002500 ions Chemical class 0.000 abstract description 17
- 238000001179 sorption measurement Methods 0.000 abstract description 15
- 229910021645 metal ion Inorganic materials 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 239000012467 final product Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 5
- 241000228143 Penicillium Species 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910001453 nickel ion Inorganic materials 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000009388 chemical precipitation Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 238000011953 bioanalysis Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000040710 Chela Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 208000008763 Mercury poisoning Diseases 0.000 description 1
- 208000030527 Minamata disease Diseases 0.000 description 1
- JJWSNOOGIUMOEE-UHFFFAOYSA-N Monomethylmercury Chemical compound [Hg]C JJWSNOOGIUMOEE-UHFFFAOYSA-N 0.000 description 1
- 208000009507 Nervous System Mercury Poisoning Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention provides a kind of adsorbent for heavy metal and preparation method and application, and this adsorbent for heavy metal is to be mixed to get by the raw material including following weight portion: 5 10 parts of Graphene@Fe3O4@MgO·SiO2Composite particles, 10 25 parts of trithiocyanuric acid trisodium salts, 5 15 parts of hydroxide, 50 80 parts of deionized waters.Wherein, described composite particles is prepared by coprecipitation with nano ferriferrous oxide, Graphene, magnesium salt, waterglass for raw material, adsorbent of the present invention can catch heavy metal ion by chemistry chelating mode, it is made to be enriched with by physical adsorption way again, quickly form metastable structure, these metal ions can be fixed and be no longer discharged in environment.And, by burying these adsorbents of process and environment can will not be caused secondary pollution.
Description
Technical field
The invention belongs to technical field of water purification, particularly relate to a kind of adsorbent for heavy metal and preparation method and answer
With.
Background technology
In environment and human health field, heavy metal refer mainly to hydrargyrum (Hg), cadmium (Cd), lead (Pb), chromium (Cr), arsenic (As),
The heavy metals such as manganese (Mn), copper (Cu), zinc (Zn), cobalt (Co), nickel (Ni).Along with China's economy, social development, shortage of water resources,
Water pollution problems is on the rise.Heavy metal is one of major pollutants in water environment, and relevant statistics shows, China's metallic wastewater
Account for the 10% of wastewater emission amount, essentially from industry such as plating, wiring board, mining, metallurgy, chemical industry, there is potential danger
The heavy metals such as evil property, particularly hydrargyrum, cadmium, lead, chromium have significant bio-toxicity, and micro-concentrations can produce toxicity, in micro-life
Can be converted into the higher organo-metallic compound of toxicity (such as methyl mercury) under thing effect, or be bioaccumulation and entered by food chain
Human body, causes chronic poisoning." the pain that Japan's Minamata bay " minamata disease " that caused by mercurialism and remarkable ability basin, river are caused because of cadmium
Sick ", the copper staining that " blood lead event " that the ground lead contamination such as Fengxiang, China Shaanxi causes, Fujian Zijin Mining seepage accident cause
Deng, it is all that heavy metal pollution brings the stylized fact of infringement to health and environment.Heavy metal wastewater thereby toxicity is big, in the environment
It is difficult to be metabolized, and repairs difficulty.Therefore, actively develop heavy metal containing wastewater treatment and reuse new industrial research, effectively remove also
Reclaim heavy metal in waste water resource the most imperative.
Heavy metal wastewater thereby traditional treatment method mainly have chemical precipitation method, ion exchange, solvent extraction, electrolysis,
Absorption method, bioanalysis etc..Wherein chemical precipitation method is that domestic and international metallic wastewater processes conventional method, and chemical precipitation method is to containing
Adding the medicaments such as alkali, coagulant, PAM in the waste water of heavy metal, reaction generates water-fast hydroxide floc particle, passes through
Precipitation is removed from waste water.Chinese invention CN 105253971A provides one not to accelerate to sink by coagulant and flocculation aid
The method formed sediment.The method utilizes precipitate itself or some other inert substance (such as quartz sand etc.) to carry out accelerated cure thing
Settling velocity, solve sulfide precipitation be difficult to precipitated fall shortcoming.The sludge quantity that chemical coagulation-sedimentation method produces is big, composition
Complicated, it is difficult to utilizing, use landfill stabilization, actually the heavy metal harm still long-term existence to environment more, it is right once to cause
Subsoil water and the severe contamination of surface water, administer the cost will paid costly.The structures such as simultaneous reactions, precipitation are many,
Floor space is relatively large, and operating cost is higher；And mud is by gravitational settling, effluent quality is difficult to stably reaching standard.
CN 104946138A discloses a kind of gelatin and goes heavy metal ion method, have employed following steps: by pending bright
Glue body is handed over by SDVB copolymer strongly acidic cation-exchange, polystyrene weak base type anion successively
After changing resin treatment, it is subsequently adding german food resin treatment, is stirred at room temperature 10min, rotating speed 120r/min, wherein,
Described german food resin is chelating resin, Hp0226.CN 104961212A discloses a kind of heavy metal chelating agent, it
Including the sodium silicate 5 calculated in parts by weight～15 parts, organic sulfur compound 25～35 parts, NaHS 5～15 parts, sodium aluminate 2
～8 parts and water 32～60 parts.Above two method belongs to ion exchange, needs to regulate pH value, and removal efficiency of heavy metals is low；Produce
Raw harmful waste, easy secondary pollution, and affect the acid-base value of water quality.
CN 103910437B announces a kind of method removing Heavy Metals in Waters ion, comprises the steps, by letter penicillium sp
Spore and the mixing of heavy metal ion solution, obtain mixed solution, then adds charcoal powder in mixed solution, carries out cultivating, dividing
From step, completing the Adsorption to Heavy Metals in Waters ion, present invention exchange, by fixing object and immobilization carrier, utilizes letter
Penicillium sp mycelia is that carrier fixes charcoal powder, realizes Linesless charcoal and the letter penicillium sp reduction adsorption effect to Cr VI in water (Cr6+) simultaneously
With the adsorption to heavy metal ion such as cadmium (Cd2+), lead (Pb2+), copper (Cu2+).CN 104556399A discloses one
The method of purification of heavy metal ion.Class microassembly robot Penicillium subjanthinellum HG2014 is utilized to make accordingly
Microorganism remediation preparation, by the effect of this bacterium Adsorption of Heavy Metal Ions (Hg2+), reduce a huge sum of money in the environment such as soil, water body
The content belonged to.Above two method belongs to bioanalysis, and removal efficiency of heavy metals is the highest, needs dose big, relatively costly.
Therefore, the heavy metal wastewater thereby scavenging material of a kind of high-efficiency environment friendly in this area, can efficiently remove the weight in water
Metal ion, will not carry out again secondary pollution to environment, the most simple to operate, operating cost is low.
Summary of the invention
It is an object of the invention to defect and the deficiency existed for prior art, it is provided that a kind of adsorbent for heavy metal and
Preparation method and application, adsorbent ability of the present invention is strong, can effectively remove nickel in water, lead, arsenic, hydrargyrum, manganese, cadmium,
The multiple harmful heavy metal such as chromium, processing method is simple, and operating cost is low.
To achieve these goals, one of technical scheme is: a kind of adsorbent for heavy metal, by include as
The raw material of lower weight portion is mixed to get: 5-10 part Graphene@Fe3O4@MgO·SiO2Composite particles, 10-25 part trithiocyanuric acid
Trisodium salt, 5-15 part hydroxide, 50-80 part deionized water；
Wherein, by weight, described Graphene@Fe3O4@MgO·SiO2Composite particles is by 5-10 part Graphene, 5-50
Part nano ferriferrous oxide granule, 40-100 part MgO SiO2Oxide particle is constituted.
The μ g that described " weight portion " is known to the skilled person, the unit of weight such as mg, g, kg, or be its multiple, as
1/10,1/100,10 times, 100 times etc..
Described " mixing " is to add composite particles, trithiocyanuric acid trisodium salt, deionized water and hydroxide successively to hold
In device, stir.
Preferably, described adsorbent for heavy metal is mixed to get by the raw material including following weight portion: 5-10 part graphite
Alkene@Fe3O4@MgO·SiO2Composite particles, 15-20 part trithiocyanuric acid trisodium salt, 8-12 part hydroxide, 60-70 part go from
Sub-water.
Wherein, one or more in sodium hydroxide, potassium hydroxide, ammonium hydroxide of described hydroxide.
Most preferably, the adsorbent for heavy metal of the present invention is by 10 parts of Graphene@Fe3O4@MgO·SiO2Compound
Grain, 20 parts of trithiocyanuric acid trisodium salts, 10 parts of sodium hydroxide, 60 parts of deionized waters are mixed to get.
Or, the adsorbent for heavy metal of the present invention is by 5 parts of Graphene@Fe3O4@MgO·SiO2Composite particles, 20
Part trithiocyanuric acid trisodium salt, 12 parts of ammonium hydroxide, 63 parts of deionized waters are mixed to get.
Primary raw material Graphene@Fe in this adsorbent3O4@MgO·SiO2Composite particles be with nano ferriferrous oxide,
Magnesium salt, waterglass, Graphene are raw material, are prepared from through coprecipitation.In concrete preparation process, can according in product each
The consumption of the cubage raw material of component is prepared.Concrete, described preparation method is: under ultrasonic, stirring condition, successively
In reaction vessel, add nano ferriferrous oxide aqueous solution, magnesium salt solution, waterglass, graphene aqueous solution, be warming up to 30-
60 DEG C of reactions, obtain precursor；Cross leaching filtering residue, the filtering residue obtained is ground to powder under 60-120 DEG C (preferably 80 DEG C) after drying
Shape and get final product.
In a preferred embodiment, described composite particles can be prepared via a method which to obtain: depends in reaction vessel
The following solution of secondary addition: the nano ferriferrous oxide aqueous solution of 1～5 parts by volume 1～3wt%, 1～5 parts by volume 3-10wt% magnesium
Saline solution, 1～5 parts by volume 3-10wt% water glass solution and the graphene solution of 1～5 parts by volume 0.1～3wt%,
In solution adition process, control mixing speed is 500-1500rmp, and reaction solution is heated to by supersonic frequency 20～200MHz
30-60 DEG C, co-precipitation generates composite particles precursor；Filtering residue is collected by filtration, described filtering residue is dried at 60～120 DEG C,
And grind described filtering residue and to powder and get final product.
The material of this composite particles is inorganic material, has micro-or nano size, and specific surface area is big, has the strongest physics and inhales
Attached effect, additionally, this inorganic material has a feature corrosion-resistant, high temperature resistant, radiation-resistant, the adsorbent being thus prepared from and its
He compares with permeable membrane isolation technics in the exchange of organic resin ion, has bigger range.
The adsorbent of the present invention is that water is that raw material is mixed to get with composite particles, trithiocyanuric acid trisodium salt, hydroxide
, in adsorption process, trithiocyanuric acid trisodium salt can produce chelation with heavy metal ion, and heavy metal ion is solid
Fixed；And Graphene@Fe3O4@MgO·SiO2The huge specific surface area of composite particles can not only direct Adsorption of Heavy Metal Ions, also
The other particle of micro-nano that heavy metal ion produces can be chelated by quick adsorption trithiocyanuric acid trisodium salt, contribute to a huge sum of money
Belong to the fully erased and rapid precipitation of ion.In addition, this adsorbent also has low cost, and preparation method is easy, uses into
This low advantage, is extremely suitable for large-scale application.
The two of technical scheme are: a kind of Graphene@Fe3O4@MgO·SiO2Composite particles, by weight,
By 5-10 part Graphene, 5-50 part nano ferriferrous oxide granule, 40-90 part MgO SiO2Oxide particle is constituted.
Preferably, each ingredients weight parts sum constituting described composite particles is 100.
Described composite particles uses coprecipitation to prepare, and the raw material for co-precipitation includes that nanometer four aoxidizes three
Ferrum, Graphene, magnesium salt and waterglass.The operation dawn known to those skilled in the art of described coprecipitation, i.e. at solution state
Under, make four kinds of mixed raw materials for precipitate, then by drying precipitate and get final product.
The three of technical scheme are: one prepares Graphene@Fe3O4@MgO·SiO2The method of composite particles, tool
Body is: under ultrasonic, stirring condition, adds nano ferriferrous oxide aqueous solution, magnesium salt solution, water successively in reaction vessel
Glass, graphene aqueous solution, be warming up to 30-60 DEG C of reaction, obtains precursor, crosses leaching filtering residue, by told filtering residue at 60～120 DEG C
It is dried, and grinds described filtering residue and to powder and get final product.
Preferably, described ferroso-ferric oxide aqueous solution, magnesium salt solution, waterglass, the percent mass of graphene aqueous solution
Number is respectively 1-3%, 3-10%, 3-10%, 0.1-3%, and the addition volume ratio of these four kinds of solution is (1-5): (1-5): (1-
5): (1-5).The composite particles that this kind of condition prepares has preferable specific surface area, and absorbability is extremely strong.
Preferably, one or more during described magnesium salt is magnesium chloride, magnesium nitrate, magnesium sulfate, magnesium chromate.
Preferably, described waterglass is the aqueous solution of silicate, and in waterglass, the mol ratio of quartz sand and alkali is 1:2～2:
1, such as can use the waterglass that mol ratio is 1:1 or 2:2 of quartz sand and alkali.
Preferably, the speed of described stirring is 500-1500rmp, and described ultrasonic frequency is 20-200MHz.
In a preferred embodiment, described method is: be sequentially added into following solution in reaction vessel: 1～5 bodies
The long-pending nano ferriferrous oxide aqueous solution of part 1～3wt%, 1～5 parts by volume 3-10wt% magnesium salt solutions, 1～5 parts by volume 3-
10wt% water glass solution and the graphene solution of 1～5 parts by volume 0.1～3wt%, in solution adition process, control to stir
Mixing speed is 500-1500rmp, and reaction solution is heated to 30-60 DEG C by supersonic frequency 20～200MHz, and co-precipitation generates compound
Particle-precursors thing；Filtering residue is collected by filtration, told filtering residue is dried at 60～120 DEG C, and grind described filtering residue and to powder be
?.
The μ L that wherein said " parts by volume " is known in the art, mL, L equal-volume unit, or be its multiple, it is 1/100,1/
10,10 times, 100 times etc..
The present invention prepares with ferroso-ferric oxide, Graphene, waterglass and magnesium salt for raw material during coprecipitation
MgO·SiO2, the MgO SiO of co-precipitation generation2Can the direct defect sites nucleation on Graphene be grown to granule, separately
The outer surface area huge due to Graphene and space obstacle effect, it is possible to stop MgO SiO2Merging between little granule, therefore
The Graphene@Fe obtained3O4@MgO·SiO2Composite particles has a bigger specific surface area, thus have splendid heavy metal from
Sub-absorption property.
Present invention simultaneously provides the Graphene@Fe using any one method above-mentioned to prepare3O4@MgO·SiO2Compound
Granule.
The four of technical scheme are: above-mentioned any one Graphene@Fe3O4@MgO·SiO2Composite particles, or appoint
The Graphene@Fe that a kind of method of anticipating prepares3O4@MgO·SiO2Composite particles, or any one adsorbent is containing heavy metal
Application in waste water process.
Wherein, described heavy metal is one or more in nickel, lead, arsenic, hydrargyrum, manganese, cadmium, chromium, and described adsorbent is to above-mentioned
The clearance of each heavy metal species, up to more than 90%, has more preferably removal effect to nickel, clearance up to more than 99%, because of
This, this adsorbent is extremely suitable for removing nickeliferous heavy metal wastewater thereby.
Use described adsorbent that heavy metal-containing waste water carries out process and can use method commonly used in the art, will adsorbent
Add in waste water, after stirring and adsorbing is complete, filter.
The four of technical scheme are: provide the processing method of a kind of heavy metal ion-containing waste water, particularly as follows: regulation
The pH value of waste water > 2, according to the ratio of addition 15-25 (preferably 20g) adsorbent in every liter of heavy metal-containing waste water, in 20～40 DEG C
Stirring to absorption completely, with magnetic force, is centrifuged or is filtered to remove adsorbent and get final product.
The adsorbent of the present invention has a good adsorption effect for the heavy metal wastewater thereby of alkalescence, is especially about 11 to pH
Waste water there is splendid heavy metals removal effect, clearance is up to more than 99%.
After adsorbent heavy metal ion of the present invention, can by the superparamagnetic e ffect of nano ferriferrous oxide,
Quickly reclaimed by magnetic force.It addition, the heavy metal microscopic precipitate that trithiocyanuric acid trisodium salt chelating produces, it is possible to by graphite
Alkene composite particles absorption rapid precipitation, forms metastable structure, thus can fix these heavy metal ion and be not released to
In environment, the adsorbent after using can fill safely, does not results in secondary pollution, environmentally friendly.
Accompanying drawing explanation
Fig. 1 is Graphene@Fe3O4@MgO·SiO2The preparation flow figure of composite particles；
Fig. 2 is the Graphene@Fe that embodiment 1 prepares3O4@MgO·SiO2The scanning electron microscope of composite particles
(SEM) figure；
Fig. 3 is the adsorbent for preparing of the embodiment 7 adsorption efficiency figure to the nickel ion solution of variable concentrations and pH value；
Fig. 4 is comparison one adsorbent adsorption efficiency figure to the nickel ion solution of variable concentrations and pH value；
Fig. 5 is comparison two adsorbents adsorption efficiency figure to the nickel ion solution of variable concentrations and pH value.
Detailed description of the invention
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.The raw material related in embodiment
Or reagent is common commercially available prod, the operation related to is this area customary technical operation if no special instructions.
Embodiment 1
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, sequentially includes the following steps:
(1) being sequentially added into 200mL mass fraction in the reactor with heating, stirring and strength Vltrasonic device is 3%
Nano ferriferrous oxide aqueous solution, 500mL mass fraction be 5% magnesium chloride solution, 500mL mass fraction be 5% waterglass
(proportioning of quartz sand and alkali is 1:1) solution and 100mL mass fraction are the graphene solution of 1%, in solution adition process
In, reaction unit keeps strength ultrasonic and quickly stirs, and afterwards solution is heated to 50 DEG C, and wherein mixing speed is 1500RMP,
Supersonic frequency is 80MHz；Co-precipitation generates Graphene@Fe3O4@MgO·SiO2Composite particles；
(2) mixture that step (1) obtains is cleaned by filter type, and collect filtering residue, by the filtering residue of acquisition 80
It is dried at DEG C, then carries out being fully ground to powder and get final product by the filtering residue of acquisition.
Embodiment 2
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, this preparation method is with embodiment 1, difference
Be only that: raw material be 200mL mass fraction be 3% nano ferriferrous oxide aqueous solution, 500mlL mass fraction be 6% chlorination
Magnesium solution, 500mL mass fraction are 3% waterglass (proportioning of quartz sand and alkali is 2:1) solution and 100mL mass fraction is
The graphene solution of 1%, the temperature of co-precipitation is 40 DEG C.
Embodiment 3
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, this preparation method is with embodiment 1, difference
Be only that: raw material be 200mL mass fraction be 4% nano ferriferrous oxide aqueous solution, 500mlL mass fraction be 7% chlorination
Magnesium solution, 500mL mass fraction are 7% waterglass (proportioning of quartz sand and alkali is 2:1) solution and 100mL mass fraction is
The graphene solution of 1%, the temperature of co-precipitation is 60 DEG C.
Embodiment 4
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, this preparation method is with embodiment 1, difference
Be only that: raw material be 100mL mass fraction be 5% nano ferriferrous oxide aqueous solution, 200mlL mass fraction be 5% chlorination
Magnesium solution, 200mL mass fraction are 5% waterglass (proportioning of quartz sand and alkali is 1:1) solution and 100mL mass fraction is
The graphene solution of 1%, the temperature of co-precipitation is 60 DEG C.
Embodiment 5
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, this preparation method is with embodiment 1, difference
Be only that: raw material be 100mL mass fraction be 5% nano ferriferrous oxide aqueous solution, 200mlL mass fraction be 5% chlorination
Magnesium solution, 200mL mass fraction are 10% waterglass (proportioning of quartz sand and alkali is 1:1) solution and 100mL mass fraction
Being the graphene solution of 2%, the temperature of co-precipitation is 60 DEG C, mixing speed 1000RMP.
Embodiment 6
A kind of Graphene@Fe3O4@MgO·SiO2The preparation method of composite particles, this preparation method is with embodiment 1, difference
Be only that: raw material be 100mL mass fraction be 5% nano ferriferrous oxide aqueous solution, 200mlL mass fraction be 10% chlorine
Change magnesium solution, 200mL mass fraction is 10% waterglass (proportioning of quartz sand and alkali is 1:1) solution and 100mL mass is divided
Number is the graphene solution of 2%, and the temperature of co-precipitation is 60 DEG C, mixing speed 1000RMP.
Embodiment 7
A kind of adsorbent for heavy metal, described adsorbent is uniformly mixed to get by the raw material of following weight: 10g graphite
Alkene@Fe3O4@MgO·SiO2Composite particles, 20g trithiocyanuric acid trisodium salt, 10g sodium hydroxide, 60g deionized water.Described multiple
Close granule from embodiment 1.
Embodiment 8
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 5g Graphene@
Fe3O4@MgO·SiO2Composite particles, 20g trithiocyanuric acid trisodium salt, 12g ammonium hydroxide, 63g deionized water.Described compound
Grain is from embodiment 2.
Embodiment 9
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 9g Graphene@
Fe3O4@MgO·SiO2Composite particles, 18g trithiocyanuric acid trisodium salt, 14g ammonium hydroxide, 59g deionized water.Described compound
Grain is from embodiment 3.
Embodiment 10
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 5g Graphene@
Fe3O4@MgO·SiO2Composite particles, 10g trithiocyanuric acid trisodium salt, 5g sodium hydroxide, 80g deionized water.Described compound
Grain is from embodiment 4.
Embodiment 11
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 10g MgO SiO2
Composite particles, 25g trithiocyanuric acid trisodium salt, 15g potassium hydroxide, 50g deionized water.Described composite particles is from embodiment 5.
Embodiment 12
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 7g Graphene@
Fe3O4@MgO·SiO2Composite particles, 10g trithiocyanuric acid trisodium salt, 15g sodium hydroxide, 68g deionized water.Described compound
Grain is from embodiment 6.
Embodiment 13
A kind of adsorbent for heavy metal, described adsorbent is uniformly mixed to get by the raw material of following weight: 10g graphite
Alkene@Fe3O4@MgO·SiO2Composite particles, 10g trithiocyanuric acid trisodium salt, 15g sodium hydroxide, 65g deionized water.Described multiple
Close granule from embodiment 1.
Embodiment 14
A kind of adsorbent for heavy metal, described adsorbent is mixed to get by the raw material of following weight: 5g Graphene@
Fe3O4@MgO·SiO2Composite particles, 13g trithiocyanuric acid trisodium salt, 12g sodium hydroxide, 70g deionized water.Described compound
Grain is from embodiment 2.
The impact on adsorption effect of the effect experimental pH value of waste water
Adsorbent: the adsorbent of embodiment 7, Graphene@Fe3O4@MgO·SiO2Composite particles (comparison one), three polysulfide cyanogen
Acid trisodium-salt solution (comparison two)；
Wherein, the preparation method compareing an adsorbent is: Graphene@Fe 10g embodiment 1 prepared3O4@MgO·SiO2
Composite particles, 15g sodium hydroxide, 75g deionized water is uniformly mixed and get final product.The preparation method compareing two adsorbents is: will
10g trithiocyanuric acid trisodium salt, 15g sodium hydroxide, 75g deionized water mix homogeneously and get final product.
Experimental technique: take 500mL concentration respectively and be respectively 0.25g/dm3, 0.5g/dm3, 1g/dm3Nickel nitrate aqueous solution
As sample, regulating its pH is 2, adds the adsorbent of 5g embodiment 7 respectively, compares an adsorbent, comparison in three samples
Two adsorbents, in 30 DEG C of stirring and adsorbing 20min, are filtered to remove adsorbent, measure the nickel ion content in waste water.
Repeating aforesaid operations, the pH differing only in regulation sample is respectively 7.5 and 11.
Experimental result: embodiment 1, comparison one, comparison two experimental result respectively as shown in Fig. 3, Fig. 4 and Fig. 5.
From Fig. 3, Fig. 4 it can be seen that embodiments of the invention 1 and comparison one prepared by Adsorbent For Removal of Heavy pH performance
Less sensitive, but adsorbent prepared by embodiment 7 has more preferably removal efficiency；From fig. 5, it can be seen that the present invention compares two institutes
Preparing adsorbent sensitive to pH, restricted application, pH value is the highest, and its removal efficiency is the highest.
It can be seen that the adsorption effect of embodiment 7 is best from Fig. 3, Fig. 4 and Fig. 5, its adsorption effect be superior to two right
According to group.The above results confirms, the adsorbent for heavy metal prepared by the present invention is relative to General Physics adsorbent and chemistry chela
Close vapor and there is higher effect, and can adapt to more pH environment.Its absorption of the adsorbent of embodiment of the present invention 8-14
Effect is similar with the effect of embodiment 7.
Although, used general explanation, detailed description of the invention and test, the present invention made detailed retouching
Stating, but on the basis of the present invention, can make some modifications or improvements it, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Scope.
Claims (10)
1. an adsorbent for heavy metal, it is characterised in that: it is mixed to get by the raw material including following weight portion: 5-10 part stone
Ink alkene@Fe3O4@MgO·SiO2Composite particles, 10-25 part trithiocyanuric acid trisodium salt, 5-15 part hydroxide, 50-80 part is gone
Ionized water；
Wherein, by weight, described Graphene@Fe3O4@MgO·SiO2Composite particles is received by 5-10 part Graphene, 5-50 part
Rice ferriferrous oxide particles, 40-100 part MgO SiO2Oxide particle is constituted.
Adsorbent for heavy metal the most according to claim 1, it is characterised in that: mixed by the raw material including following weight portion
Conjunction obtains: 5-10 part Graphene@Fe3O4@MgO·SiO2Composite particles, 15-20 part trithiocyanuric acid trisodium salt, 8-12 part hydrogen-oxygen
Compound, 60-70 part deionized water；
Preferably, one or more in sodium hydroxide, potassium hydroxide, ammonium hydroxide of described hydroxide.
3. according to the adsorbent for heavy metal described in any one of claim 1-2, it is characterised in that: by including following weight portion
Raw material be mixed to get: 10 parts of Graphene@Fe3O4@MgO·SiO2Composite particles, 20 parts of trithiocyanuric acid trisodium salts, 10 parts of hydrogen
Sodium oxide, 60 parts of deionized waters；Or,
5 parts of Graphene@Fe3O4@MgO·SiO2Composite particles, 20 parts of trithiocyanuric acid trisodium salts, 12 parts of ammonium hydroxide, 63 parts are gone
Ionized water.
4. according to the adsorbent for heavy metal described in any one of claim 1-3, it is characterised in that: described Graphene@Fe3O4@
MgO·SiO2Composite particles is with nano ferriferrous oxide, magnesium salt, waterglass, Graphene as raw material, through coprecipitation preparation
Become.
5. a Graphene Fe3O4@MgO·SiO2Composite particles, it is characterised in that: by weight, by 5-10 part Graphene,
5-50 part nano ferriferrous oxide granule, 40-100 part MgO SiO2Oxide particle is constituted；
Preferably, the weight portion sum of each component is 100.
6. prepare Graphene Fe for one kind3O4@MgO·SiO2The method of composite particles, it is characterised in that: in ultrasonic, stirring condition
Under, in reaction vessel, add nano ferriferrous oxide aqueous solution, magnesium salt solution, waterglass, graphene aqueous solution successively, rise
Temperature, to 30-60 DEG C of reaction, obtains precursor；Cross leaching filtering residue, the filtering residue of acquisition is ground at 60-120 DEG C after drying powdery
Obtain.
Method the most according to claim 6, it is characterised in that: described ferroso-ferric oxide aqueous solution, magnesium salt solution, water glass
Glass aqueous solution, the mass fraction of graphene aqueous solution are respectively 1-3%, 3-10%, 3-10%, 0.1-3%, these four kinds of solution
Adding volume ratio is (1-5): (1-5): (1-5): (1-5).
8. according to the method described in claim 6 or 7, it is characterised in that: in described waterglass, the mol ratio of quartz sand and alkali is
1:2～2:1；And/or,
Described magnesium salt is one or more in magnesium chloride, magnesium nitrate, magnesium sulfate, magnesium chromate；And/or,
The speed of described stirring is 500-1500rmp, and described ultrasonic frequency is 20-200MHz.
9. the adsorbent for heavy metal described in any one of claim 1-4, or the Graphene@Fe described in claim 53O4@
MgO·SiO2Composite particles, or the Graphene@Fe that method described in any one of claim 6-8 prepares3O4@MgO·SiO2
Composite particles application in heavy metal-containing wastewater treatment, it is preferable that described heavy metal is in nickel, lead, arsenic, hydrargyrum, manganese, cadmium, chromium
One or more, more preferably nickel.
10. utilize the method that adsorbent for heavy metal described in any one of claim 1-4 processes heavy metal-containing waste water, its
Be characterised by: the pH value of regulation waste water 2, according to the ratio of addition 15-25g adsorbent in every liter of heavy metal-containing waste water, add and inhale
Attached dose, in 20～40 DEG C of stirrings to absorption completely, remove adsorbent.
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| CN111252875A (en) * | 2020-02-20 | 2020-06-09 | 广西埃索凯生物科技有限公司 | Treatment process of heavy metal-containing wastewater |
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| CN108083377A (en) * | 2017-12-25 | 2018-05-29 | 中国科学院合肥物质科学研究院 | A kind of method for reducing heavy metal arsenic toxicity |
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| CN111252875A (en) * | 2020-02-20 | 2020-06-09 | 广西埃索凯生物科技有限公司 | Treatment process of heavy metal-containing wastewater |
| CN111393546A (en) * | 2020-03-31 | 2020-07-10 | 浙江康特生物科技有限公司 | Preparation of chelate resin and application of chelate resin in removing cobalt ions in kit purified water |
| CN111393546B (en) * | 2020-03-31 | 2021-08-03 | 浙江康特生物科技有限公司 | Preparation of chelate resin and application of chelate resin in removing cobalt ions in kit purified water |
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| CN115818991B (en) * | 2022-11-16 | 2024-02-27 | 山东众森科技股份有限公司 | Cementing material and preparation method thereof |
| CN115739053A (en) * | 2023-01-06 | 2023-03-07 | 太原理工大学 | Double-shell magnetic microsphere Fe 3 O 4 @SiO 2 @7MgO·2B 2 O 3 ·7H 2 O adsorbent |
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