REDUCTIVE DECHLORINATION OF TRICHLOROETHYLENE BY BENTONITE AND KAOLINITE MODIFIED WITH FE(II)

摘要：

The reductive dechlorination of trichloroethylene (TCE) by two clay minerals (bentonite and kaolinite) modified with Fe(II) was investigated. It was found that the reactions were significantly influenced by pH and the concentration of Fe(II) used for the modification of clay minerals. At pH 9.0, the bentonite or kaolinite modified with 1 mM Fe(II) showed a certain reactivity for TCE dechlorination and the removal rates of TCE were 29.6％ and 17.4％, respectively. The dechlorination capacity of Fe(II)-modified bentonite was higher than that of Fe(II)-modified kaolinite, both improved as the Fe(II) concentration increased. The observed dechlorination reactions of TCE followed the pseudo-first-order kinetics and the only chlorinated product detected was cis-DCE, which accounted for 10.9～22.6％ in the whole products.

作者: Ma X D Sun Q Sun H W Gu X Q Lu Y

作者单位: College of Environmental Science and Engineering,Nankai University,Tianjin,30071,China

会议类型: 国际会议

会议名称: 29th International Symposium on Halogenated Persistent Organic Pollutants(第29届国际持久性有机污染物研讨会)(2009国际二噁英大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2009-08-24（万方平台首次上网日期，不代表论文的发表时间）