JP4351022B2 - 有機ハロゲン化合物分解剤 - Google Patents
有機ハロゲン化合物分解剤 Download PDFInfo
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- JP4351022B2 JP4351022B2 JP2003359510A JP2003359510A JP4351022B2 JP 4351022 B2 JP4351022 B2 JP 4351022B2 JP 2003359510 A JP2003359510 A JP 2003359510A JP 2003359510 A JP2003359510 A JP 2003359510A JP 4351022 B2 JP4351022 B2 JP 4351022B2
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- 150000002896 organic halogen compounds Chemical class 0.000 title claims description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 133
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 57
- 239000000428 dust Substances 0.000 claims description 57
- 229910052742 iron Inorganic materials 0.000 claims description 47
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 239000002689 soil Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 26
- 229910052759 nickel Inorganic materials 0.000 claims description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 22
- 239000003673 groundwater Substances 0.000 claims description 21
- 239000011701 zinc Substances 0.000 claims description 18
- 238000000746 purification Methods 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 15
- 229910052725 zinc Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 description 29
- 235000013980 iron oxide Nutrition 0.000 description 18
- 239000002245 particle Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 14
- 238000002156 mixing Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- 238000005422 blasting Methods 0.000 description 8
- 239000003574 free electron Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 230000003213 activating effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- -1 ethylene hydrocarbon compounds Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000012629 purifying agent Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000006298 dechlorination reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 229910000480 nickel oxide Inorganic materials 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- UBOXGVDOUJQMTN-UHFFFAOYSA-N 1,1,2-trichloroethane Chemical compound ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000004045 organic chlorine compounds Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- LGXVIGDEPROXKC-UHFFFAOYSA-N 1,1-dichloroethene Chemical group ClC(Cl)=C LGXVIGDEPROXKC-UHFFFAOYSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- KFUSEUYYWQURPO-UPHRSURJSA-N cis-1,2-dichloroethene Chemical group Cl\C=C/Cl KFUSEUYYWQURPO-UPHRSURJSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000005526 organic bromine compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- CEOCDNVZRAIOQZ-UHFFFAOYSA-N pentachlorobenzene Chemical compound ClC1=CC(Cl)=C(Cl)C(Cl)=C1Cl CEOCDNVZRAIOQZ-UHFFFAOYSA-N 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Images
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- Processing Of Solid Wastes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
R(X)y=R(X)z+2e- → R≡R + 2X- …(1)
ここでRとはCHnであり(n=0〜2)、XとはCl、Brなどのハロゲン物質(y、zはn=0の時2、n=1の時1、n=2の時0となる)で、代表的な例を以下に示す。
CH2=CCl2+2e- → CH≡CH + 2Cl-
CHCl=CCl2+3e- → CH≡CH + 3Cl-
CCl2=CCl2+4e- → CH≡CH + 4Cl-
カソード:RX+H2O→RH+X−+OH−
ここで、RX:有機ハロゲン化合物、RH:炭化水素である。
Fe2++2e−→Fe −0.44V
Ni2++2e−→Ni −0.257V
1.1供試ショットブラストダスト
ショットブラストダストは、ステンレス鋼をブラストしたショットブラストダスト(以下、SUSダストという)、普通鋼とステンレス鋼をブラストしたショットブラストダストで普通鋼とステンレス鋼のブラスト処理量の比率が9:1であるショットブラストダスト(以下、混合ダストという)、亜鉛末を含有する塗料を塗装した鋼材を含む普通鋼をブラストしたショットブラストダスト(以下、塗装鋼ダストという)を用いた。
上記の3種のショットブラストダストを種々の比率で混合し、表3に示すようにニッケル、亜鉛、鉄酸化物の含有率を調整したものを調製した。
有機ハロゲン化合物として、最も汚染発覚件数の多い物質であるトリクロロエチレン(以下、TCE)を用いて分解性能評価試験を行った。
1)分解試験液の作成方法
容積30mlのバイアル瓶に前記のスチールショット又はショットブラストダスト(以下、まとめて鉄粉という。)を添加した。鉄粉の添加量は、乾燥状態のものは、1.25g、湿潤状態のものは乾燥状態に換算しその分増量した。この瓶に市販のミネラルウォーターを25m添加し液量に対する鉄粉量を5質量%とした。ここに、TCE標準原液1000mg/lを125μl添加し、素早くテフロン(登録商標)コートゴムセプタムを装着してアルミシールで密封した。この液中TCE濃度は5mg/lである。また、このバイアル瓶にできるヘッドスペースは約2%であった。以上の操作を繰り返して、試験に必要な本数の反応試験瓶を調整した。
1)で作成したバイアル瓶をレシプロ振盪器に装着して、25℃の一定温度の環境下でバイアル瓶の内部液が均一に保たれるよう100rpmで所定日数振盪した。
所定日経過後、バイアル瓶を取り出し、20分間静置して内部の鉄粉を沈降させた。アルミシールとテフロン(登録商標)コートゴムセプタムを外し、所定量の上澄み液を採取し、JISK0125 5.4.1による方法でTCEの分析を行った。所定時間経過後のTCE濃度(C)と初期のTCE濃度(C0)との比率を残存率C/C0として、残存率C/C0が0.2以下であれば分解効果があると評価した。
試験結果を表3に示す。ニッケル、亜鉛、鉄酸化物の全ての含有率を本発明の範囲に調整したもの(実施例1〜7)、酸化鉄または亜鉛の含有量が本発明の範囲外であってもニッケル含有量が0.5%のもの(実施例8、10)、及び酸化鉄の含有量が本発明の範囲未満であってもニッケル含有量が0.1%で亜鉛含有量が0.002%とかなり低いもの(実施例9)では7日間経過時点でのTCE残存率C/C0が0.2以下となり、分解効果があることを確認した。またニッケル、亜鉛、酸化鉄の含有量が本発明の範囲を満たす場合にはニッケル含有量が高いものほど短時間でTCE残存率C/C0が各段に減少しており、高い分解効果が認められた。一方、ニッケル含有量が0.1%未満のもの(比較例1,2)では分解効果が認められない。
Claims (5)
- スチールショットを鋼材表面に投射し研掃する際に生じるダストを集塵したショットブラストダストを含み、ニッケル含有量が0.1質量%以上、亜鉛含有量が1質量%未満、残りの主成分が金属鉄と鉄酸化物である有機ハロゲン化合物分解剤。
- スチールショットをステンレス鋼材表面に投射し研掃する際に生じるダストを集塵したショットブラストダストを含み、ニッケル含有量が0.1質量%以上、亜鉛含有量が1質量%未満、残りの主成分が金属鉄と鉄酸化物である有機ハロゲン化合物分解剤。
- 鉄酸化物含有量が3質量%以上である請求項1又は2に記載の有機ハロゲン化合物分解剤。
- 請求項1から3のいずれかに記載の有機ハロゲン化合物分解剤よりなる土壌又は地下水の浄化剤。
- 請求項1又は2に記載の有機ハロゲン化合物分解剤を酸の溶液に入れて金属鉄表面の酸化膜を除去することを特徴とする有機ハロゲン化合物分解剤の表面活性化方法。
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Families Citing this family (3)
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CA2593946A1 (en) | 2006-11-14 | 2008-05-14 | Tosoh Corporation | Iron powder for organic chlorinated compound decomposition and detoxifying treatment method using the same |
JP2009050818A (ja) * | 2007-08-29 | 2009-03-12 | Jfe Mineral Co Ltd | 汚染土壌および汚染地下水の浄化方法 |
JP6385870B2 (ja) * | 2015-03-24 | 2018-09-05 | アイシン高丘株式会社 | 砒素除去剤 |
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