Effective removal of hexavalent chromium from aqueous solution by ZnCl2 modified biochar: Effects and response sequence of the functional groups
Journal of Molecular Liquids(2021)
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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