Cathodic Hydrogen as Electron Donor in Enhanced Reductive Dechlorination

作     者：张瑞玲 路晓霞 Danny D. Reible 焦刚珍 秦松岩 ZHANG Ruiling;LU Xiaoxia;Danny D. Reible;JIAO Gangzhen;QIN Songyan

作者机构：School of Environmental Science and Safety Engineering Tianjin University of Technology Tianjin 300384 China Anchor Qea LLC Austin TX 78746 USA Department of Civil & Environmental Engineering Texas Tech University Lubbock TX 79409-1023 USA 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2013年第21卷第12期

页      面：1386-1390页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 083001[工学-环境科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 

基　　金：Supported by the National Natural Science Foundation of China(51108317) the Municipal Natural Science Foundation of Tianjin(12JCQNJC05400) 

主　　题：hydrogen electrode reductive dechlorination capping 

摘      要：In situ capping is an attractive and cost-effective method for remediation of contaminated sediments,but few studies on enhancing contaminant degradation in sediment caps have been reported,especially for chlorinated *** enhanced bioactive barrier is a new process for in situ remediation for reducible compounds in soil or *** primary objective of this study is to determine if electrodes in sediment could create a redox gradient and provide electron acceptor/donor to stimulate degradation of chlorinated *** results demonstrate that graphite electrodes lead to sustainable evolution of hydrogen,displaying zero-order kinetics in the initial stages with different *** constant rates of hydrogen evolution at 3,4,and 5 V are1.05,2.54,and 4.3 nmol·L 1·d 1,*** higher voltage can produce more hydrogen,but it could not keep long time because the over potentials on electrode surfaces prevent its *** study shows that 4 V is more appropriate for hydrogen *** measured and evaluated concentration of 1,2,3,5-tetrachlorobenzene in pore water of sediment and concentration of sulfate show that dechlorination is inhibited at higher concentration of sulfate.