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author：

Gu, T. (Gu, T..) [1] | Zhang, R. (Zhang, R..) [2] | Zhang, S. (Zhang, S..) [3] | Shi, B. (Shi, B..) [4] | Zhao, J. (Zhao, J..) [5] | Wang, Z. (Wang, Z..) [6] | Long, M. (Long, M..) [7] | Wang, G. (Wang, G..) [8] | Qiu, T. (Qiu, T..) [9] | Jiang, Z. (Jiang, Z..) [10]

Indexed by：

Scopus

Abstract：

The　efficient　separation　of　Li+/Mg2+　is　the　key　to　lithium　extraction　from　salt　lake　brine.　Herein,　a　multi-amino　quaternary　ammonium　salt　(3,5-dimethylhydrazide-benzyl　trimethyl　ammonium　bromide,　DHTAB)　was　designed　and　synthesized　to　modify　pristine　polyamide　(PA)　nanofiltration　membranes.　DHTAB　was　grafted　on　the　surface　of　the　PA　nanofiltration　membrane　to　construct　a　positively　selective　layer　for　Li+/Mg2+　separation.　The　introduction　of　DHTAB　increased　the　membrane　surface　charge　density　to　+5.16　mC　m−2,　which　was　nearly　three　times　that　of　the　pristine　PA　membrane.　The　increased　charge　density　of　the　modified　membrane　led　to　a　stronger　Donnan　exclusion　for　Mg2+,　and　accordingly　a　high　MgCl2　rejection　of　99.2%.　The　modified　membranes　exhibited　a　high　Li+/Mg2+　separation　factor　of　up　to　60.1,　when　applied　for　MgCl2　and　LiCl　binary　solution,　which　exceeded　all　known　PA-based　nanofiltration　membranes.　©　2022

Keyword：

High selectivity Li+/Mg2+ separation Nanofiltration Positive charge Surface modification

Community：

  • [ 1 ] [Gu, T.]College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 2 ] [Gu, T.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 3 ] [Gu, T.]Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
  • [ 4 ] [Zhang, R.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 5 ] [Zhang, R.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
  • [ 6 ] [Zhang, S.]Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
  • [ 7 ] [Zhang, S.]Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore117585, Singapore
  • [ 8 ] [Shi, B.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 9 ] [Shi, B.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
  • [ 10 ] [Zhao, J.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 11 ] [Zhao, J.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
  • [ 12 ] [Wang, Z.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 13 ] [Wang, Z.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
  • [ 14 ] [Long, M.]Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
  • [ 15 ] [Wang, G.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 16 ] [Wang, G.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
  • [ 17 ] [Qiu, T.]College of Chemical Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 18 ] [Qiu, T.]Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, Fujian, Fuzhou, 350108, China
  • [ 19 ] [Jiang, Z.]Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
  • [ 20 ] [Jiang, Z.]Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
  • [ 21 ] [Jiang, Z.]Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China

Reprint 's Address：

  • [Jiang, Z.]School of Chemical Engineering and Technology, No. 92, Weijin Road, Nankai District, China;;[Qiu, T.]College of Chemical Engineering, Fujian, China

Email：


zhyjiang@tju.edu.cn |
tingqiu@fzu.edu.cn
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Source ：

Journal of Membrane Science

ISSN： 0376-7388

Year： 2022

Volume： 659

9 . 5

JCR@2022

8 . 4 0 0

JCR@2023

ESI HC Threshold：74

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 34

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 3

Affiliated Colleges：

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