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Hybrid System for in-situ Remediation of Contaminated Soil by Chlorinated Organic Compounds

含氯有机化合物污染土壤原位修复混合系统

基本信息

批准号：
14205150
负责人：
CHIDA Tadashi
金额：
$ 28.54万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

The purpose of this study was to establish the hybrid system combined reductive dechlorination by iron powder and biodegradation with anaerobic microorganisms for the remediation of the soil contaminated with chlorinated organic compounds. Main research results are as follows.1.On the reductive dechlorination of the chlorinated organic compounds such as TCE by the metallic iron powder, the details of the reaction palhway was clarified by the kinetic analysis. The mixing method of iron powder to the soil to treat the contaminant efficient was developed.2.The concentration of chlorinated organic compounds in the groundwater drastically decreased in the downstream of the reactive permeable wall, when the wall was installed in the contaminant source area.3.As a reducing agent except for iron powder, it was detected that thiophene derivatives and elemental sulfur had been formed as reaction product in the pyrite surface, when the utilization of sulfide mineral such as the pyrite was examined. At the same time, no product detected in the vapor phase, though chloride ion was detected in liquid phase.4.The batch treatment at the anaerobic condition using the enrichment culture system for decomposing TCE was carried out. The dechlorination of TCE to the ethene was observed, when methanol or the EDC was added to culture solution.5.Iron powder was mixed and filled in the contaminant source area of chlorinated organic compounds, and microbial treatment was applied around the source area where the concentration of the contaminant was relatively lower level. The contaminant was very efficiently removed by this hybrid system in comparison with the case in which each process was independently carried out.

本研究旨在建立铁粉还原脱氯-厌氧微生物生物降解复合体系，以修复受氯代有机物污染的土壤。主要研究结果如下：1.金属铁粉对三氯乙烯等氯代有机物的还原脱氯反应，通过动力学分析阐明了反应过程的细节。2.反应渗透墙位于污染源区后，其下游地下水中氯代有机物浓度急剧下降; 3.反应渗透墙作为除铁粉外的还原剂，当检查硫化物矿物如黄铁矿的利用时，发现噻吩衍生物和元素硫作为反应产物在黄铁矿表面形成。同时，在气相中没有检测到产物，而在液相中检测到氯离子。4.利用富集培养系统对三氯乙烯进行了厌氧分批处理。在培养液中加入甲醇或二氯乙烷，均能使三氯乙烯脱氯生成乙烯。5.在氯代有机物污染源区域混合填充铁粉，并在污染物浓度相对较低的区域周围进行微生物处理。与每个过程独立进行的情况相比，该混合系统非常有效地去除了污染物。

项目成果

期刊论文数量（36）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

硫酸還元菌によるイオウ化合物の還元反応

硫酸盐还原菌对硫化合物的还原反应

DOI：
发表时间：
2002
期刊：
平成14年度資源・素材関係学協会合同秋季大会講演要旨集
影响因子：
0
作者：
K.Takita;K.Hisatsune;Y.Nonaka;H.Mishima;K.T.Uesugi;E.Sato;S.Sawai;須藤孝一他
通讯作者：
須藤孝一他

Remediation of the Soil Contaminated with Chlorinated Organic Compounds by Direct iron Mixing Method

直接拌铁法修复有机氯污染土壤

DOI：
发表时间：
2002
期刊：
Proceedings of Sigen-Sozai 2002 (Autumn Meeting of MMIJ)
影响因子：
0
作者：
K.T.Uesugi;E.Sato;S.Sawai;K.Takita;Y.Nonaka;H.Mishima;Toshikazu Shiratori et al.
通讯作者：
Toshikazu Shiratori et al.

金属鉄粉による塩素化エタンおよびメタンの脱塩素反応

金属铁粉氯化乙烷和甲烷的脱氯反应

DOI：
发表时间：
2004
期刊：
第10回地下水・土壌汚染とその防止対策に関する研究集会講演要旨集
影响因子：
0
作者：
Wataru Hareyama et al.;Junko Hara et al.;Yasushi Ueda et al.;J.Hara et al.;伊藤裕行他
通讯作者：
伊藤裕行他

Photodegradation of trichloroethene with oxalic acid and iron ion

草酸和铁离子光降解三氯乙烯

DOI：
发表时间：
2004
期刊：
Proceedings of 2nd International workshop on Water Dynamics
影响因子：
0
作者：
Wataru Hareyama et al.;Junko Hara et al.;Yasushi Ueda et al.;J.Hara et al.;伊藤裕行他;原淳子他;Wataru Hareyama et al.
通讯作者：
Wataru Hareyama et al.

Hyperactive Bioreactor System with Bioconsortia for the Treatment of TCE Contaminated Groundwater

具有生物联合体的高活性生物反应器系统用于处理 TCE 污染的地下水

DOI：
发表时间：
2003
期刊：
Proceedings of Asian Weterqual 2003 (CD-ROM)
影响因子：
0
作者：
Y.Nonaka;K.Morishima;H.Mishima;K.Furukawa;E.Sato;S.Sawai;K.T.Uesugi;Koichi Suto et al.
通讯作者：
Koichi Suto et al.