文献类型：期刊文献

英文题名：Degradation performance and mechanism of decabromodiphenyl ether (BDE209) by ferrous-activated persulfate in spiked soil

作者：Peng, Hongjiang;Zhang, Wei[2];Liu, Lin;Lin, Kuangfei

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：307

起止页码：750

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20164102887356);WOS:【SCI-EXPANDED(收录号:WOS:000387298200078)】；

基金：This research was supported by projects of the National Natural Science Foundation of China (41371467), the Shanghai Pujiang Program (15PJD013), and the National Key Research and Development Program (2016YFD0800405).

语种：英文

外文关键词：BDE209; sodium persulfate; intermediate product; sulfate radical; hydroxylamine

摘要：This study first investigated the degradation performance of BDE209 using ferrous activated persulfate-based advanced oxidation process. The results indicated that a lower pH would result in a greater increase in the BDE209 removal efficiency, and the maximum removal efficiency was obtained at pH = 3.0. The effects of sodium persulfate (PS) dosage and molar ratio of PS/Fe(II) were also determined, and 0.2 mol L-1 and 2:1 were the best conditions, where the removal of BDE209 in soil could reach to about 53% after 6 h. Additionally, hydroxylamine (HA) was firstly introduced to a PS/Fe(II) system, and resulted in a large enhancement of BDE209 removal efficiency. Compared to the controls, the degradation rate increased by 13% with the ratio of HA/Fe(II) 4/1, which might be because HA accelerated the transformation from Fe(III) to Fe(lI). Additionally, 9 intermediate products during iron-activated persulfate oxidation process were identified, and a possible reaction mechanism was further proposed. (C) 2016 Elsevier B.V. All rights reserved.