gchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2018.12.047
Scopus ID: 2-s2.0-85059343382
Title:
Reversibility of membrane performance and structure changes caused by extreme cold water temperature and elevated conditioning water temperature
Author: Tikka A.; Gao W.; Liao B.
Source Publication: Water Research
ISSN: 431354
Indexed By: SCI ; SCI-E ; EI
Publishing Year: 2019
pages begin: 260
pages end: 270
Language: 英语
Keyword: Cleaning temperature ; Cold water temperature ; Membrane ; Membrane performance ; Membrane structure reversibility ; Pore size
Scopus Keyword: Chemical cleaning ; Fluorine compounds ; Membrane structures ; Pore size ; Recovery ; Temperature ; Cold water temperatures ; Membrane performance ; Membrane permeability ; Membrane pore size ; Polyvinylidene fluoride membranes ; Size structure ; Structure change ; Water temperatures ; Membranes ; hot water ; polyvinylidene fluoride ; sodium metabisulfite ; water ; climate effect ; cold water ; membrane ; performance assessment ; permeability ; pore space ; size distribution ; size structure ; temperature profile ; warm water ; water temperature ; Article ; cleaning ; cold ; membrane permeability ; membrane structure ; pore size distribution ; priority journal ; room temperature ; scanning electron microscopy ; time ; water temperature
English Abstract: The effects of extreme cold water temperature, elevated cleaning water temperature, cleaning time on membrane performance, and pore size distribution were studied using flat-sheet polyvinylidene fluoride (PVDF) membranes. Extreme cold water temperature led to a decrease in membrane permeability, and membrane pore size shrinkage. The use of periodical warm water (35 °C) membrane conditioning could almost completely recover the membrane permeability and pore size structure loss caused by extreme cold water temperature, while the use of room temperature (23±1 °C) conditioning recovered majority of the membrane permeability and structure loss caused by extreme cold water temperature. Changes in membrane performance correlate well with changes in membrane structure. Membranes periodically conditioned in warmer water temperature showed a higher permeability than that periodically conditioned at room temperature from a long-term operation of three months. The results suggest the change in PVDF membrane performance and structure caused by extreme cold water temperature is almost completely reversible after periodical warm water conditioning, and thus the use of warm water conditioning and/or chemical cleaning will benefit the recovery of membrane performance and structure change caused by extreme cold water temperature in cold regions. © 2018 Elsevier Ltd
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/122051
Appears in Collections:气候变化事实与影响

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Affiliation: Department of Chemical Engineering, Lakehead University, Thunder Bay, ON P7B 5E1, Canada; Department of Civil Engineering, Lakehead University, Thunder Bay, ON P7B 5E1, Canada

Recommended Citation:
Tikka A.,Gao W.,Liao B.. Reversibility of membrane performance and structure changes caused by extreme cold water temperature and elevated conditioning water temperature[J]. Water Research,2019-01-01
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