Column adsorption of Cu(Ⅱ) by polymer-supported nano-iron oxides in the presence of sulfate: Experimental and mathematical modeling  

作　　者：Hui Qiu Xiaolin Zhang Zhe Xu 

机构地区：[1]Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology [2]State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University

出　　处：《Chinese Journal of Chemical Engineering》2017年第9期1163-1169,共7页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(21607080);the Natural Science Foundation of Jiangsu Province(BK20160946);Jiangsu Higher Education Institution NSF(16KJB610011)

摘　　要：Polymer-supported hydrous iron oxides(HFOs) are promising for heavy metals removal from aqueous systems.The ubiquitous inorganic ligands, e.g., sulfate, are expected to exert considerable impacts on pollutants removal by these hybrid sorbents. Herein, we obtained a hybrid sorbent HFO-PS by encapsulating nanosized HFO into macroporous polystyrene(PS) resin. Both batch and column sorption experiments of Cu(Ⅱ) by HFO-PS were carried out in the presence of sulfate. Obviously, the presence of sulfate is favorable for Cu(Ⅱ) sorption onto HFO-PS.The performances of column Cu(Ⅱ) removal were fitted and predicted with Adams–Bohart, Clark, Thomas and BDST models. Thomas model is suggested best-fit to predict the breakthrough curves. Besides, a linear correlation is observed between breakthrough time and column length based on BDST model, which might be useful for predicting the breakthrough time for Cu(Ⅱ) removal by HFO-PS.Polymer-supported hydrous iron oxides（HFOs） are promising for heavy metals removal from aqueous systems.The ubiquitous inorganic ligands, e.g., sulfate, are expected to exert considerable impacts on pollutants removal by these hybrid sorbents. Herein, we obtained a hybrid sorbent HFO-PS by encapsulating nanosized HFO into macroporous polystyrene（PS） resin. Both batch and column sorption experiments of Cu（Ⅱ） by HFO-PS were carried out in the presence of sulfate. Obviously, the presence of sulfate is favorable for Cu（Ⅱ） sorption onto HFO-PS.The performances of column Cu（Ⅱ） removal were fitted and predicted with Adams–Bohart, Clark, Thomas and BDST models. Thomas model is suggested best-fit to predict the breakthrough curves. Besides, a linear correlation is observed between breakthrough time and column length based on BDST model, which might be useful for predicting the breakthrough time for Cu（Ⅱ） removal by HFO-PS.

关 键 词：Composite Nanotechnology Waste water Hydrous iron oxide Fixed-bed adsorption Thomas model 

分 类 号：O647.3[理学—物理化学] X505[理学—化学]