Degradation of chlorinated phenols by nanoscale zero-valent iron

作     者：Rong CHENG Jianlong WANG Weixian ZHANG 

作者机构：Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China Department of Civil and Environmental EngineeringLehigh UniversityBethlehemPA 18015-3176USA 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2008年第2卷第1期

页      面：103-108页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.50678089 and 50325824) which is greatly acknowledged 

主　　题：nanoscale zero-valent iron chlorophenol dechlorination molecular orbit theory 

摘      要：Chlorophenols(CPs),as important contami-nants in groundwater,are toxic and difficult to ***-valentironreceivedagreat deal of attention because of its excellent performance in treating recalcitrant *** this study,nanoscale zero-valent iron particles were prepared using chemical reduction,and the reductive transformations of three kinds of chlorinated phenols(2-CP,3-CP,and 4-CP)by nanoscale zero-valent iron under different conditions were *** transformation process of the CPs was shown to be dechlorination first,then cleavage of the benzene *** removal efficiency of the CPs varied as follows:*** reactivity of CPs was associated with their energy of lowest unoccupied molecular orbit(E LUMO).With the increase in initial concentrations of CPs,removal efficiency decreased a *** the quantities of CPs reduced increased *** had influence on not only the removal efficiency,but also the transformation *** higher temperatures,dechlorination occurred prior to benzene ring *** lower temperatures,however,the oxidation product was formed more easily.