Metal-doped(Cu,Zn)Fe2O4 from integral utilization of toxic Zn-containing electric arc furnace dust: An environment-friendly heterogeneous Fenton-like catalyst  

作　　者：Jun-wu Li Xing Han Rong-xia Chai Fang-qin Cheng Mei Zhang Min Guo 

机构地区：[1] State Key Laboratory of Advanced Metallurgy,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China [2] Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,Shanxi University,Shanxi 030006,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2020年第7期996-1006,共11页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.U1810205);the National Basic Research Program of China(No.2014CB 643401);Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes。

摘　　要：Pure metal-doped(Cu,Zn)Fe2O4 was synthesized from Zn-containing electric arc furnace dust(EAFD)by solid-state reaction using copper salt as additive.The effects of pretreated EAFD-to-Cu2(OH)2CO3·6H2O mass ratio,calcination time,and calcination temperature on the structure and catalytic ability were systematically studied.Under the optimum conditions,the decolorization efficiency and total organic carbon(TOC)removal efficiency of the as-prepared ferrite for treating a Rhodamine B solution were approximately 90.0%and 45.0%,respectively,and the decolorization efficiency remained 83.0%after five recycles,suggesting that the as-prepared(Cu,Zn)Fe2O4 was an efficient heterogeneous Fenton-like catalyst with high stability.The high catalytic activity mainly depended on the synergistic effect of iron and copper ions occupying octahedral positions.More importantly,the toxicity characteristic leaching procedure(TCLP)analysis illustrated that the toxic Zncontaining EAFD was transformed into harmless(Cu,Zn)Fe2O4 and that the concentrations of toxic ions in the degraded solution were all lower than the national emission standard(GB/31574-2015),further confirming that the as obtained sample is an environment-friendly heterogeneous Fenton-like catalyst.

关 键 词：Zn-containing electric arc furnace dust metal-doped Cu−Zn ferrite heterogeneous Fenton-like catalyst environmental effect 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]