Effect of sulfate on Cu(Ⅱ)sorption to polymer-supported nano-hydrated ferric oxides:Experimental and modeling studies

作     者：Wenxiang Ni Luyang Yang Xiaolin Zhang Hui Qiu Wenxiang Ni;Luyang Yang;Xiaolin Zhang;Hui Qiu

作者机构：Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and PollutionControlSchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Pollution Control and Resource ReuseSchool of the EnvironmentNanjing UniversityNanjing 210023China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第5期

页      面：319-326页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by National Natural Science Foundation of China (21607080) Natural Science Foundation of Jiangsu Province (BK20160946) supported by Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials 

主　　题：Iron oxides Polymer Sulfate Adsorption Ternary complex 

摘      要：Incorporating of hydrous ferric oxide(HFO)inside porous supports with large sizes has become an effective way to decontaminate the water from heavy *** anions like sulfate are usually present in high concentrations in water,and might greatly affect adsorption behavior of hybrid ***,a polymer-based HFO-CPS was fabricated by encapsulating nano-HFO inside a chloromethylated polystyrene polymer(CPS)and the reactivity of HFO-CPS with Cu(Ⅱ)was evaluated in the presence of sulfate *** complexation theory was firstly employed to describe the effect of sulfate on Cu(Ⅱ)adsorption edges of hybrid HFO-CPS,where constant capacitance model(CCM)was *** available weak adsorption site Fe_((2))OH of hybrid HFO-CPS was found to decrease from 20% Fe to 5% Fe,which might be caused by the pore plugging effect after HFO *** the assumption that a ternary complex was formed,the effect of sulfate on Cu(Ⅱ)adsorption by HFO-CPS were successfully described by CCM using the optimized Fe_((2))OH site under different sulfate concentrations(1 or 10 mmol·L^(-1))and Cu/Fe ratios(0.0042 or 0.0252).It is confirmed that the formation of FeOHCuSO4 ternary surface complexes played an important role in enhancing Cu(Ⅱ)adsorption on HFO-CPS in the presence of sulfate.