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

引用

International Journal of Minerals,metallurgy and Materials 2020年第7期27卷 996-1006页

作者： Jun-wu Li Xing Han Rong-xia Chai Fang-qin Cheng Mei Zhang Min Guo State Key Laboratory of Advanced metallurgy School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes Shanxi UniversityShanxi 030006China

Pure metal-doped(cu,zn)Fe2O4 was synthesized from zn-containing electric arc furnace dust(EAFD)by solid-state reaction using copper salt as *** effects of pretreated EAFD-to-cu2(OH)2CO3·6H2O mass ratio,calcination time,and calcination temperature on the structure and catalytic ability were systematically *** 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 *** high catalytic activity mainly depended on the synergistic effect of iron and copper ions occupying octahedral *** 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

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