Jingwei Wu , Yuan Zhao , Jiawei Dai , Bowen Yang , Yuhu Zhang , Xiao Pu
{"title":"Removal of hexavalent chromium from aqueous by Chitosan-stabilized FeS","authors":"Jingwei Wu , Yuan Zhao , Jiawei Dai , Bowen Yang , Yuhu Zhang , Xiao Pu","doi":"10.1016/j.wen.2023.07.003","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, FeS and chitosan (CTS) were compounded to form a new Cr (Ⅵ) treatment material FeS/CTS. FeS/CTS was characterized by SEM, FTIR, XRD, XPS, BET, etc, and the removal performance and mechanism of FeS/CTS for Cr (Ⅵ) were also discussed. The removal of Cr (Ⅵ) by the composite was the result of electrostatic force, redox reaction, complexation and precipitation. When the initial concentration of Cr (Ⅵ) was 50 mg∙L<sup>−1</sup>, the removal of Cr (Ⅵ) was attributed to 87.14% reduction and 12.86% adsorption. The fitting results of the kinetic and isothermal models proved that chemical adsorption playsed a dominant role in the removal process. At pH 5 and the initial Cr (Ⅵ) concentration of 40 mg∙L<sup>−1</sup>, the removal rate of Cr (Ⅵ) by the composite could reach 99.90%. All results showed that FeS/CTS composite can be used as a potential Cr (Ⅵ) removal material in water.</p></div>","PeriodicalId":101279,"journal":{"name":"Water-Energy Nexus","volume":"6 ","pages":"Pages 64-73"},"PeriodicalIF":0.0000,"publicationDate":"2023-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water-Energy Nexus","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2588912523000139","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, FeS and chitosan (CTS) were compounded to form a new Cr (Ⅵ) treatment material FeS/CTS. FeS/CTS was characterized by SEM, FTIR, XRD, XPS, BET, etc, and the removal performance and mechanism of FeS/CTS for Cr (Ⅵ) were also discussed. The removal of Cr (Ⅵ) by the composite was the result of electrostatic force, redox reaction, complexation and precipitation. When the initial concentration of Cr (Ⅵ) was 50 mg∙L−1, the removal of Cr (Ⅵ) was attributed to 87.14% reduction and 12.86% adsorption. The fitting results of the kinetic and isothermal models proved that chemical adsorption playsed a dominant role in the removal process. At pH 5 and the initial Cr (Ⅵ) concentration of 40 mg∙L−1, the removal rate of Cr (Ⅵ) by the composite could reach 99.90%. All results showed that FeS/CTS composite can be used as a potential Cr (Ⅵ) removal material in water.
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