Chemical degradation of dichloroethylenes by pyrite

Junko Hara, Chihiro Inoue, Tadashi Chida, Takeshi Komai

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

Chlorinated ethylenes have been recognized for their environmental persistence and risk. Main initial environmental contaminants are tetrachloroethylene and trichloroethylene but dichloroethylenes persist as a by-product of them, because the dechlorination rate of dichloroethylenes is inferior to initial chemicals in general chemical degradation or bioremediation. They protract the absolute remediation of soil and groundwater. This paper describes the dechlorination ability of pyrite, which can degradate the dichloroethylenes at the grater than or equal to the rate of tetra- or tri- chlorothylenes. In our previous research, the chemical reductive ability of natural sulfide for trichloroethylene was clarified and the reaction process differs completely from that with transitional metals. As same as the reaction of trichloroethylene with sulfide, the dichloroethylenes are entirely dechlorinated and change into to non-contaminated hydrocarbone or sulfur compounds. These reaction products adsorb on hydrophobic pyrite surface in this system. The chemical dechlorination is caused by electron sourced from the dissolution of pyrite at normal temperature and pressure condition. The remediation is easy to proceed in the natural environment.

元の言語English
ホスト出版物のタイトルWATER DYNAMICS
ホスト出版物のサブタイトル3rd International Workshop on Water Dynamics
ページ196-199
ページ数4
DOI
出版物ステータスPublished - 2006 5 15
イベントWATER DYANMICS: 3rd International Workshop on Water Dynamics - Sendai, Japan
継続期間: 2005 11 162005 11 17

出版物シリーズ

名前AIP Conference Proceedings
833
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

Other

OtherWATER DYANMICS: 3rd International Workshop on Water Dynamics
Japan
Sendai
期間05/11/1605/11/17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • これを引用

    Hara, J., Inoue, C., Chida, T., & Komai, T. (2006). Chemical degradation of dichloroethylenes by pyrite. : WATER DYNAMICS: 3rd International Workshop on Water Dynamics (pp. 196-199). (AIP Conference Proceedings; 巻数 833). https://doi.org/10.1063/1.2207104