Performance of a synthetic resin for lithium adsorption in waste liquid of extracting aluminum from fly-ash

作     者：Zhengguo Xu Xiaochong Wang Shuying Sun Zhengguo Xu;Xiaochong Wang;Shuying Sun

作者机构：National Engineering Research Center for Integrated Utilization of Salt Lake ResourceEast China University of Science and TechnologyShanghai 200237China 

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

年 卷 期：2022年第35卷第4期

页      面：115-123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）] 081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by National Key Research and Development Program of China(2017YFB0603104) Sponsored by Shanghai Pujiang Program(2019PJD011) the financial support from the State Key Laboratory of Green Chemistry Synthesis Technology(Zhejiang University of Technology,Hangzhou 310032) 

主　　题：Adsorption Wastewater treatment Lithium Utilization of fly-ash 

摘      要：In this study,we investigated the performance of a synthetic resin for the adsorption of Li from predesilicated solution which is the waste liquid produced by extracting aluminum from fly *** adsorption kinetics and isotherms of the resin were obtained and *** saturated adsorption sites of the resin were in agreement with the quasi-second-order kinetic ***,the pore diffusion model(PDM)was applied to represent the lithium adsorption kinetics which confirming that the external mass is the limiting ***,we evaluated the adsorption properties of this resin in fixed-bed *** established a feasible extraction process for Li from strong alkaline solutions with low Li *** process parameters,such as the flow rate,initial adsorption solution concentration,water washing process,desorption agent concentration,and flow rate were *** desorption rate of the Li;ions was directly proportional with the concentration of the desorption *** time required to accumulate Li decreased as the hydrochloric acid concentration and flow rate *** of the peak appeared increased from 0.5 bed volume(BV)to 2.5 BV as the concentration was increased from 1 to3 mol·L^(-1),and the peak increased from 231 to 394 mg·L^(-1).The resin presented good selectivity for Li;ions and could effectively separate impurity ions from the pre-desilication solution.