文献类型：期刊文献

英文题名：Perchloroethylene (PCE) oxidation by percarbonate in Fe2+-catalyzed aqueous solution: PCE performance and its removal mechanism

作者：Miao, Zhouwei[1];Gu, Xiaogang[1];Lu, Shuguang[1];Zang, Xuke[1];Wu, Xiaoliang[1];Xu, Minhui[1];Ndong, Landry Biyoghe Bi[1];Qiu, Zhaofu[1];Sui, Qian[1];Fu, George Yuzhu[2]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Georgia So Univ, Dept Civil Engn & Construct Management, Statesboro, GA 30460 USA

年份：2015

卷号：119

起止页码：1120

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20145200381983);WOS:【SCI-EXPANDED(收录号:WOS:000347739600152)】；

基金：This study was financially supported by the grant from the National Environmental Protection Public Welfare Science and Technology Research Program of China (No. 201109013), the National Natural Science Foundation of China (Nos. 41373094 and 40871223), the Shanghai Natural Science Funds (No. 12ZR1408000).

语种：英文

外文关键词：Perchloroethylene (PCE); Percarbonate; Fe2+-catalyzed oxidation; Hydroxyl radical (HO center dot); Groundwater remediation

摘要：The performance of Fe2+-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5 min at 20 degrees C with a Fe2+/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe2+-catalyzed SPC oxidation for PCE degradation. Fe-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO center dot) oxidation in Fe2+/SPC system. In conclusion, Fe2+-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application. (C) 2014 Elsevier Ltd. All rights reserved.