Chromium (VI) removal from water using cetylpyridinium chloride (CPC)-modified montmorillonite

Shengrong Liu,Ming Chen,Xiaoqiang Cao, Guang Li,Di Zhang,Mingzhen Li,Na Meng,Jieji Yin,Bingqi Yan

Separation and Purification Technology（2020）

Cited 71|Views4

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Abstract

•Montmorillonite (Mt) was modified using CPC, to reverse the zeta potential of Mt to positive.•FTIR, XRD, SEM and molecular dynamics simulation were performed to confirm the modification.•CPC-Mt removed Cr (VI) efficiently, but the removal decreased as increasing pH and ionic strength.•Cr (VI) removal was achieved by ion exchange and reduction to Cr (III) in CPC-Mt.

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Key words

Chromium (VI),Adsorption,Montmorillonite,Cetylpyridinium chloride (CPC),Surface modification

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