Sorption mechanisms of arsenate on Mg-Fe layered double hydroxides: A combination of adsorption modeling and solid state analysis

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• 作者：Barbora Hudcová ; ^a ; Veronika Veselská ; ^a ; Jan Filip^b ; Sylva Čí ; halová ; ^a ; Michael Komá ; rek^a ; ^{komarek@fzp.czu.cz}
• 关键词：Layered double hydroxides ; Arsenate ; Adsorption ; Surface complexation modeling ; Spectroscopy
• 刊名：Chemosphere
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：168
• 期：Complete
• 页码：539-548
• 全文大小：1495 K
• 卷排序：168

文摘

Mg-Fe LDH synthesized using co-precipitation was used for As(V) sorption. Pseudo-second order and Freundlich models well fitted kinetic and equilibrium data. Mg-Fe LDH showed the highest adsorption capacity at pH 5.5. DLM described the formation of monodentate and bidentate inner sphere complexes. Adsorption modeling was supported by the analyses of the solid phase.