文献类型：期刊文献

英文题名：Different kinds of persulfate activation with base for the oxidation and mechanism of BDE209 in a spiked soil system

作者：Peng, Hongjiang;Xu, Liya;Zhang, Wei[2];Liu, Fuwen;Lu, Xin;Lu, Wei;Danish, Muhammad;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：574

起止页码：307

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20163902834158);WOS:【SCI-EXPANDED(收录号:WOS:000389090100031)】；

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; Persulfate; Rate constant; Free radical; Degradation performance

摘要：The feasibility of using base persulfate (PS) and coupled with other activation methods (heat, ultrasonic and Fe2+ gluconate) was first explored for the removal of decabromodiphenyl ether (BDE209) in a soil system, and various factors were also investigated. The results showed that the removal of BDE209 followed a pseudo first -order model. Interestingly, the rate constant (k1) indicated a good power exponential relationship with initial PS (k(1) = 0.018 x [PS](0.437)(0), R2 = 0.983, [PS](0) = 0.02-0.5 M) or BDE209 (k(1) = 0.029 x e(0)(-0.038x[BDE209]), R-2 = 0.999, [BDE209](0) = 10-50 mg kg(-1)) concentration, respectively. Additionally, k(1) well fitted the Arrhenius equation at the temperature range of 25 to 55 C, and the calculated activation energy (E-a) approximately was 41.2 kJ mol(-1). The removal efficiency could be enhanced in the presence of ultrasound due to increasing the amount of BDE209 molecules desorbed from soil and organic matters. Finally, nine intermediate products were identified during the heat and base co-activated PS oxidation process, and the possible reaction pathways were further proposed. (C) 2016 Elsevier B.V. All rights reserved.