氯化物
纳滤
反渗透
化学
废水
吸附
膜技术
电渗析
无机化学
降水
环境化学
膜
环境工程
环境科学
有机化学
生物化学
物理
气象学
作者
Yiming Li,Zhongzhu Yang,Kun Yang,Jingjing Wei,Zihao Li,Chi Ma,Yang Xu,Tantan Wang,Guangming Zeng,Guanlong Yu,Zhigang Yu,Chang Zhang
标识
DOI:10.1016/j.scitotenv.2022.153174
摘要
Increased chloride concentration can cause salinization, which has become a serious and widespread environmental problem nowadays. This review aims at providing comprehensive and state-of-the-art knowledge and insights of technologies for chloride removal. Mechanisms for chloride removal mainly include chemical precipitation, adsorption, oxidation and membrane separation. In chemical precipitation, chloride removal by forming CuCl, AgCl, BiOCl and Friedel's salt. Adsorbents used in chloride removal mainly include ion exchangers, bimetal oxides and carbon-based electrodes. Oxidation for chloride removal contains ozone-based, electrochemical and sulfate radical-based oxidation. Membrane separation for chloride removal consists of diffusion dialysis, nanofiltration, reverse osmosis and electrodialysis. In this review, we specifically proposed the factors that affect chloride removal process and the corresponding strategies for improving removal efficiency. In the last section, the remaining challenges of method explorations and material developments were stated to provide guidelines for future development of chloride removal technologies.
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