文献类型：期刊文献

英文题名：Lithium ion recovery from brine using granulated polyacrylamide-MnO2 ion-sieve

作者：Xiao, Jia-Li[1];Sun, Shu-Ying[1];Song, Xingfu[1];Li, Ping[1];Yu, Jian-Guo[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2015

卷号：279

起止页码：659

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20152300925717);WOS:【SCI-EXPANDED(收录号:WOS:000359873500074)】；

基金：The research was supported by NSFC (U1407120), National 863 Program (2012AA061601) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：MnO2 ion-sieve; Lithium recovery from brine; Ion-exchange; Adsorption; Granulation

摘要：The granulated polyacrylamide (PAM)-MnO2 ion-sieve with 0.3-0.7 mm diameter was prepared using the inverse suspension polymerization method, where the precursor was the Li4Mn5O12 ultrafine powder synthesized in our laboratory, the binder was acrylamide, the cross-linker was N,N'-methylenebisacrylamide (MBA), and the initiator was ammonium persulfate (APS). And then Li+ in the granulated material was exchanged with H+ in a 0.5 M HCl solution to obtain PAM-MnO2 ion-sieve for Li+ adsorption. The adsorption equilibrium isotherms of Li+ on the granulated PAM-MnO2 ion-sieve were measured at 293, 298, 303, and 318 K, respectively. The Langmuir model was used to fit the experimental data, and the model parameters were estimated with the nonlinear regression method. The uptake curves of Li+ adsorption were measured. The film mass-transfer coefficient (k(f)) and Li+ pore diffusivity (D-p) in the granulated PAM-MnO2 ion-sieve were estimated using a mathematical model to fit the experimental data. Furthermore, the Li+ adsorption-desorption behaviors in the granulated PAM-MnO2 ion-sieve packed column were investigated for three kinds of feedstock, namely brine, LiCl solution with and without impurities of Na+, K+, Ca2+, and Mg2+, respectively, and the regenerability of the granulated PAM-MnO2 ion-sieve for the multicyclic Li+ adsorption from brine and desorption was assessed. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.