Effective removal of hexavalent chromium from aqueous solution by ZnCl2 modified biochar: Effects and response sequence of the functional groups

Niandong Guo,Xiaofan Lv,Qi Yang,Xing Xu,Haiyan Song

Journal of Molecular Liquids（2021）

引用 26|浏览3

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摘要

•2D COS was firstly used to investigate the interaction between the Cr(VI) and biochars.•The response sequence of functional groups was –OH>C=O>–COOH>–CH3.•The –COOH formed by –OH/C=O oxidation provided more Cr(III) immobilization sites.•The mechanisms of interface reaction in the adsorption system were discussed systematically.

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关键词

ZnCl2 modified biochar,Cr(VI) removal,Adsorption-reduction,Cr(III) immobilization,2D COS

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