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However, there are few reports on the effect of cations on dechlorination. In this study, we investigated the effect of cations in high-salt wastewater on the removal of chlorine ions by cuprous chloride precipitation and analysed the corresponding mechanism. A series of investigations revealed that Fe3+ could oxidise sulphite, thereby reducing the removal rate of chlorine ions. The reaction between magnesium and sulphite results in precipitation, which has a slightly adverse effect on the removal of chloride ions. Hexavalent chromium oxidises the chloride ion, resulting in the formation of chlorine gas, which improves the removal rate. Ferrous and manganese, however, do not have a notable effect on chlorine removal.<\/jats:p>","DOI":"10.2166\/wst.2021.098","type":"journal-article","created":{"date-parts":[[2021,3,17]],"date-time":"2021-03-17T16:35:34Z","timestamp":1615998934000},"page":"2232-2241","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":15,"title":["Effect of cations on the removal rate of chloride ions and mechanism analysis in high-salt wastewater"],"prefix":"10.2166","volume":"83","author":[{"given":"Kangning","family":"Gao","sequence":"first","affiliation":[{"name":"College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Lu","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xi","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dengxin","family":"Li","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shihong","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"945","published-online":{"date-parts":[[2021,3,17]]},"reference":[{"key":"key-10.2166\/wst.2021.098-1","doi-asserted-by":"publisher","DOI":"10.2166\/wst.2015.593"},{"key":"key-10.2166\/wst.2021.098-2","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2019.136358"},{"issue":"03","key":"key-10.2166\/wst.2021.098-3","first-page":"31","article-title":"\u53bb\u9664\u6eb6\u6db2\u4e2d\u6c2f\u79bb\u5b50\u7684\u6280\u672f\u7684\u7814\u7a76\u8fdb\u5c55 (Research progress in technology of chloride removal from aqueous solution)","volume":"48","author":"Chen","year":"2015","journal-title":"Cailiao Baohu"},{"key":"key-10.2166\/wst.2021.098-4","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcice.2007.09.001"},{"key":"key-10.2166\/wst.2021.098-5","doi-asserted-by":"publisher","DOI":"10.1016\/j.envexpbot.2020.104254"},{"key":"key-10.2166\/wst.2021.098-6","unstructured":"Donghui R. 2016 \u77f3\u7070\u94dd\u76d0\u6c89\u6dc0\u6cd5\u8131\u9664\u5e9f\u6c34\u4e2d\u6c2f\u79bb\u5b50\u7684\u5b9e\u9a8c\u7814\u7a76 (Experimental Research on Removal of Chloride ion Wastewater by Lime with Aluminum Salt Precipitation Method) (Chinese). 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