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author:

Yang, Qiaoli (Yang, Qiaoli.) [1] | Lau, Cher Hon (Lau, Cher Hon.) [2] | Ge, Qingchun (Ge, Qingchun.) [3]

Indexed by:

EI

Abstract:

Current forward osmosis (FO) membranes are unsuitable for arsenic removal from water because of their poor arsenic selectivity. In this study, we designed and synthesized a series of novel imidazolium-based ionic liquids via one-step quaternization reactions and grafted these novel compounds on to conventional thin-film composite FO membranes for treatment of arsenic-containing water. The newly developed ionic membranes contained a functionalized selective polyamide layer grafted with either carboxylic acid/carboxylate or sulfonate groups that drastically enhanced membrane hydrophilicity and thus FO water permeation. Ionic membranes modified with sodium 1-ethanesulfonate-3-(3-aminopropyl) imidazolium bromide (NH2-IM-(CH2)2-SO3Na) outperformed pristine membranes with higher water recovery efficiency. Exceptional performance was achieved with this ionic membrane in FO arsenic removal with a water flux of 11.0 LMH and a rejection higher than 99.5% when 1000 ppm arsenic (HAsO42-) as the feed with a dilute NaCl solution (0.5 M) as the draw solution under the FO mode. Ionic membranes developed in this work facilitated FO for the treatment of arsenic-containing water while demonstrating its superiority over incumbent technologies with more efficient arsenic removal. © 2019 American Chemical Society.

Keyword:

Arsenic Chemical contamination Chemicals removal (water treatment) Composite membranes Grafting (chemical) Ionic liquids Osmosis Osmosis membranes Pollution control Sodium chloride Water treatment

Community:

  • [ 1 ] [Yang, Qiaoli]College of Environment and Resources, Fuzhou University, Fuzhou, Fujian; 350116, China
  • [ 2 ] [Lau, Cher Hon]School of Engineering, University of Edinburgh, King's Buildings, Robert Stevenson Road, Edinburgh; EH9 3FB, United Kingdom
  • [ 3 ] [Ge, Qingchun]College of Environment and Resources, Fuzhou University, Fuzhou, Fujian; 350116, China

Reprint 's Address:

  • [lau, cher hon]school of engineering, university of edinburgh, king's buildings, robert stevenson road, edinburgh; eh9 3fb, united kingdom

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Source :

ACS Applied Materials and Interfaces

ISSN: 1944-8244

Year: 2019

Issue: 19

Volume: 11

Page: 17828-17835

8 . 7 5 8

JCR@2019

8 . 5 0 0

JCR@2023

ESI HC Threshold:236

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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