Remediation technology of groundwater contaminated by perchloroethylene

被引:3
|
作者
Wu, Yanqing [1 ]
Ma, Changwen [2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
[2] Shanghai Second Polytechn Univ, Sch City Construct & Environm Engn, Shanghai 201209, Peoples R China
基金
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词
PCE; perchloroethylene; dechlorination; zero-valent metal; microbial community; integrated degradation; CHLORINATED ACETYLENE REACTION; IN-SITU BIOREMEDIATION; REDUCTIVE DECHLORINATION; CARBON-TETRACHLORIDE; METHANOSARCINA THERMOPHILA; IRON; CHLOROFORM; PATHWAYS; KINETICS; PARTICLES;
D O I
10.1504/IJEP.2011.039094
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
To dechlorinate perchloroethylene (PCE), batch experiments were conducted for five groups of reactors: zero-valent iron (Fe-0), zero-valent zinc (Zn-0), an anaerobic microbial community (MB), a combination of iron powder and an anaerobic microbial community (FeMB), and combination of zinc powder and an anaerobic microbial community (ZnMB). After about 25 days, PCE in the FeMB degradation system has been almost completely removed; about 43% of PCE has been dechlorinated to the nontoxic hydrocarbons acetylene, ethylene or ethane. This major reaction pathway in the FeMB system was different from those in other systems. The chain pseudo-first-order kinetic reaction model was applied to predicting the complete dechlorination of PCE to non-chlorinated hydrocarbons in different systems.
引用
收藏
页码:176 / 185
页数:10
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