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author:

Xie, S. (Xie, S..) [1] | Du, J. (Du, J..) [2] | Huang, X. (Huang, X..) [3] | Gu, A. (Gu, A..) [4] | Fang, S. (Fang, S..) [5] (Scholars:方圣琼) | Liu, R. (Liu, R..) [6] | Zou, D. (Zou, D..) [7] | Lin, J. (Lin, J..) [8] | Xie, M. (Xie, M..) [9] | Zhao, S. (Zhao, S..) [10] | Ye, W. (Ye, W..) [11]

Indexed by:

Scopus

Abstract:

Membrane distillation (MD) has been widely used for resource recovery from high-salinity wastewater, due to its superior technical merits of high separation efficiency and potential integration of low-grade heat. Herein, a robust superhydrophobic PVDF membrane prepared by spray-coating of fluorinated silica nanoparticles was employed to treat highly saline dye wastewater by MD. Specifically, impacts of operation conditions, including temperature difference, feed flow-rate, salinity, dye concentration, and dye species, on MD performance of the fabricated superhydrophobic PVDF membrane were comprehensively investigated. The increase of temperature difference and feed flow-rate had a positive effect on the MD flux of the membrane. Conversely, the rise in salinity and dye concentration induced an adverse impact on the MD flux. Furthermore, the superhydrophobic PVDF membrane showed a strong robustness in treating complex streams, as demonstrated by consistently stable MD flux using various dye/NaCl mixed solutions. Due to the robust surface superhydrophobicity, the fabricated PVDF membrane exhibited impressive antiwetting and antifouling properties against highly saline dye wastewater, consistently stable permeation flux, and high dye/salt removal efficiency (>99.99%). Moreover, the superhydrophobic membrane showed a high water recovery (90%) from highly saline dye wastewater with a slight reduction (13.4%) in permeation flux during a 39 h MD filtration. These results signify the promising practicability of the fabricated superhydrophobic PVDF membrane in sustainable management of highly saline dye wastewater via MD. © 2022 American Chemical Society.

Keyword:

antiwetting and antifouling desalination highly saline dye wastewater membrane distillation superhydrophobic membrane

Community:

  • [ 1 ] [Xie S.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Du J.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Huang X.]Jiangsu DDBS Environmental Remediation Co., Ltd., Nanjing, 210012, China
  • [ 4 ] [Gu A.]Jiangsu DDBS Environmental Remediation Co., Ltd., Nanjing, 210012, China
  • [ 5 ] [Fang S.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 6 ] [Liu R.]Department of Chemical Engineering, Process Engineering for Sustainable Systems (ProcESS), KU Leuven, Celestijnenlaan 200F, Leuven, B-3001, Belgium
  • [ 7 ] [Zou D.]School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
  • [ 8 ] [Lin J.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 9 ] [Xie M.]Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, United Kingdom
  • [ 10 ] [Zhao S.]Institute for Frontier Materials, Deakin University, Geelong, 3216, VIC, Australia
  • [ 11 ] [Ye W.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China

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Source :

ACS ES and T Water

ISSN: 2690-0637

Year: 2023

Issue: 7

Volume: 3

Page: 1893-1901

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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