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[期刊论文]

A Bifunctional Zwitterion That Serves as Both a Membrane Modifier and a Draw Solute for Forward Osmosis Wastewater Treatment

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author:

Chen, Yichen (Chen, Yichen.) [1] | Ge, Qingchun (Ge, Qingchun.) [2]

Indexed by:

EI

Abstract:

Producing clean water and simultaneously recovering valuable compounds are a big challenge in wastewater treatment. Here we designed a bifunctional zwitterion of (1-(3-aminopropyl)imidazole) propanesulfonate (APIS) for membrane modification and being a draw solute as well for water production and protein enrichment via forward osmosis (FO). Immobilized to the membrane surface by a fast amidation reaction, APIS endows the membrane with favorable properties benefiting the FO process. The APIS-modified sulfonated poly(ether sulfone) (APIS-sPES) membrane produces a water flux 101% higher than that of the nascent membrane (from 9.3 to 18.7 LMH) with 0.5 M NaCl as the draw solution. The APIS-sPES membrane also exhibits higher fouling resistance with a much smaller decline in water permeation and stronger renewability with the flux restored to 88% of the original value compared to a 59% recovery rate of the nascent membrane after 20-h experiments against a 200 ppm ovalbumin solution. APIS produces a fair good water flux coupled with negligible reverse diffusion when used as a draw solute and can be readily regenerated via pH regulation. Unlike the conventional NaCl draw solute, APIS does not contaminate or damage protein structure. The APIS-sPES membrane and APIS draw solute prove a perfect match in protein-containing wastewater treatment and protein enrichment. © 2019 American Chemical Society.

Keyword:

Membranes Osmosis Proteins Reclamation Sodium chloride Surface diffusion Wastewater treatment

Community:

  • [ 1 ] [Chen, Yichen]College of Environment and Resources, Fuzhou University, Fujian; 350116, China
  • [ 2 ] [Ge, Qingchun]College of Environment and Resources, Fuzhou University, Fujian; 350116, China

Reprint 's Address:

  • [ge, qingchun]college of environment and resources, fuzhou university, fujian; 350116, china

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Source :

ACS Applied Materials and Interfaces

ISSN: 1944-8244

Year: 2019

Issue: 39

Volume: 11

Page: 36118-36129

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:

30 Days PV: 1

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