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author:

Guo, Jie (Guo, Jie.) [1] | Yang, Qiaoli (Yang, Qiaoli.) [2] | Meng, Qing-Wei (Meng, Qing-Wei.) [3] | Lau, Cher Hon (Lau, Cher Hon.) [4] | Ge, Qingchun (Ge, Qingchun.) [5] (Scholars:盖庆春)

Indexed by:

EI SCIE

Abstract:

Water contaminated with low concentrations of pollutants is more difficult to clean up than that with high pollutant content levels. Membrane separation provides a solution for removing low pollutant content from water. However, membranes are prone to fouling, losing separation performances over time. Here we synthesized neutral (IM-NH2) and positively charged (IL-NH2) imidazole derivatives to chemically functionalize membranes. With distinct properties, these imidazole grafts could tailor membrane physicochemical properties and structures to benefit forward osmosis (FO) processes for the removal of 20-100 ppm of Safranin O dye-a common dye employed in the textile industry. The water fluxes produced by IM-NH2- and IL-NH2 modified membranes increased by 67% and 122%, respectively, with DI water as the feed compared to that with the nascent membrane. A 39% flux increment with complete dye retention (similar to 100%) was achieved for the IL-NH2-modified membrane against 100 ppm of Safranin O dye. Regardless of the dye concentration, the IL-NH2-modified membrane exhibited steadily higher permeation performance than the original membrane in long-term experiments. Reproducible experimental results were obtained with the IL-NH2-modified membrane after cleaning with DI water, demonstrating the good antifouling properties and renewability of the newly developed membrane.

Keyword:

dye removal FO membrane forward osmosis imidazole derivatives membrane modification

Community:

  • [ 1 ] [Guo, Jie]Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Yang, Qiaoli]Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Meng, Qing-Wei]Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Ge, Qingchun]Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Lau, Cher Hon]Univ Edinburgh, Sch Engn, Edinburgh EH9 3FB, Midlothian, Scotland

Reprint 's Address:

  • 盖庆春

    [Ge, Qingchun]Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Fujian, Peoples R China;;[Lau, Cher Hon]Univ Edinburgh, Sch Engn, Edinburgh EH9 3FB, Midlothian, Scotland

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Source :

ACS APPLIED MATERIALS & INTERFACES

ISSN: 1944-8244

Year: 2021

Issue: 5

Volume: 13

Page: 6710-6719

1 0 . 3 8 3

JCR@2021

8 . 5 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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