文献类型：期刊文献

英文题名：Heterogeneous Fenton-like degradation of methoxychlor in water using two different FeS@hydrotalcites (LHDs) and Fe3O4@LHDs catalysts prepared via an in situ growth method

作者：Huang, Yan[1];Yang, Yuxiang[1,2];Wang, Xinxin[1];Yuan, Xue[1];Pi, Na[1];Yuan, Hongmin[3];Liu, Xiangnong[4];Ni, Chaoying[2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA;[3]Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China;[4]Yangzhou Univ, Anal Test Ctr, Yangzhou 225009, Jiangsu, Peoples R China

年份：2018

卷号：342

起止页码：142

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20181304964411);WOS:【SCI-EXPANDED(收录号:WOS:000440404800013)】；

基金：This work was supported by the National Natural Science Foundation of China (20577010, 20971043), the Fundamental Research Funds for the Central Universities, and the Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University.

语种：英文

外文关键词：FeS@LHDs; Fe3O4@LHDs; FeS-Fe3O4@LHDs-heterogeneous Fenton; Degradation of methoxychlor; Wastewater treatment

摘要：Heterogeneous Fenton-like degradation of methoxychlor in water was studied over two FeS@LHDs and Fe3O4@LHDs catalysts prepared by anchoring hydrotalcites (LHDs) onto nano-FeS and nano-Fe3O4 particles respectively via an in situ growth method. The effects of different heterogeneous Fenton system, pH value, initial concentrations of methoxychlor, dioctylsulfosuccinate sodium (AOT) and H2O2, and temperature on the degradation of methoxychlor were systematically investigated. Typically, within the pH range studied (2.5-3.5) the maximum methoxychlor removal of 57.54% was achieved after degradation reaction time of 120 min. The methoxychlor degradation followed pseudo-second-order kinetic model, and its initial degradation efficiency was found to follow the equation of - v(o)=72.627e(-36.71/RT)(CMethoxychlor)(2). Methoxychlor was degraded by the Fenton system in two stages and the intermediates were mineralized to hexanoic acid, 3-hydroxy-4-methoxy benzoic acid, water and dioxide. The results demonstrate that heterogeneous Fenton process catalyzed by Fe3O4@LDHs and FeS@LDHs is promising in wastewater treatment.