Effect of dope solution temperature on the membrane structure and membrane distillation performance

Membrane distillation (MD) is a non-isothermal process applicable to purify water using hydrophobic membrane. Membrane in MD is hydrophobic, permeable to water vapor but repels liquid water. MD membrane is expected to pose high flux, high fouling and scaling resistances and most importantly high wet...

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Main Authors: Nawi, N.I.M., Bilad, M.R., Nordin, N.A.H.M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.21617 /
Published: Institute of Physics Publishing 2018
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046102909&doi=10.1088%2f1755-1315%2f140%2f1%2f012032&partnerID=40&md5=2ec4582bccb141eba3ef589ce98b1800
http://eprints.utp.edu.my/21617/
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spelling utp-eprints.216172019-01-07T07:28:47Z Effect of dope solution temperature on the membrane structure and membrane distillation performance Nawi, N.I.M. Bilad, M.R. Nordin, N.A.H.M. Membrane distillation (MD) is a non-isothermal process applicable to purify water using hydrophobic membrane. Membrane in MD is hydrophobic, permeable to water vapor but repels liquid water. MD membrane is expected to pose high flux, high fouling and scaling resistances and most importantly high wetting resistance. This study develops flat-sheet polyvinylidene fluoride (PVDF) membrane by exploring both liquid-liquid and liquid-solid phase inversion technique largely to improve its wetting resistance and flux performance. We hypothesize that temperature of dope solution play roles in solid-liquid separation during membrane formation and an optimum balance between liquid-liquid and liquid-solid (crystallization) separation leads to highly performance PVDF membrane. Findings obtained from differential scanning calorimeter test show that increasing dope solution temperature reduces degree of PVDF crystallinity and suppresses formation of crystalline structure. The morphological images of the resulting membranes show that at elevated dope solution temperature (40, 60, 80 and 100°C), the spherulite-like structures are formed across the thickness of membranes ascribed from due to different type of crystals. The performance of direct-contact MD shows that the obtained flux of the optimum dope temperature (60°C) of 10.8 L/m2h is comparable to commercial PTFE-based MD membrane. © 2018 Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2018 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046102909&doi=10.1088%2f1755-1315%2f140%2f1%2f012032&partnerID=40&md5=2ec4582bccb141eba3ef589ce98b1800 Nawi, N.I.M. and Bilad, M.R. and Nordin, N.A.H.M. (2018) Effect of dope solution temperature on the membrane structure and membrane distillation performance. IOP Conference Series: Earth and Environmental Science, 140 (1). http://eprints.utp.edu.my/21617/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Membrane distillation (MD) is a non-isothermal process applicable to purify water using hydrophobic membrane. Membrane in MD is hydrophobic, permeable to water vapor but repels liquid water. MD membrane is expected to pose high flux, high fouling and scaling resistances and most importantly high wetting resistance. This study develops flat-sheet polyvinylidene fluoride (PVDF) membrane by exploring both liquid-liquid and liquid-solid phase inversion technique largely to improve its wetting resistance and flux performance. We hypothesize that temperature of dope solution play roles in solid-liquid separation during membrane formation and an optimum balance between liquid-liquid and liquid-solid (crystallization) separation leads to highly performance PVDF membrane. Findings obtained from differential scanning calorimeter test show that increasing dope solution temperature reduces degree of PVDF crystallinity and suppresses formation of crystalline structure. The morphological images of the resulting membranes show that at elevated dope solution temperature (40, 60, 80 and 100°C), the spherulite-like structures are formed across the thickness of membranes ascribed from due to different type of crystals. The performance of direct-contact MD shows that the obtained flux of the optimum dope temperature (60°C) of 10.8 L/m2h is comparable to commercial PTFE-based MD membrane. © 2018 Published under licence by IOP Publishing Ltd.
format Article
author Nawi, N.I.M.
Bilad, M.R.
Nordin, N.A.H.M.
spellingShingle Nawi, N.I.M.
Bilad, M.R.
Nordin, N.A.H.M.
Effect of dope solution temperature on the membrane structure and membrane distillation performance
author_sort Nawi, N.I.M.
title Effect of dope solution temperature on the membrane structure and membrane distillation performance
title_short Effect of dope solution temperature on the membrane structure and membrane distillation performance
title_full Effect of dope solution temperature on the membrane structure and membrane distillation performance
title_fullStr Effect of dope solution temperature on the membrane structure and membrane distillation performance
title_full_unstemmed Effect of dope solution temperature on the membrane structure and membrane distillation performance
title_sort effect of dope solution temperature on the membrane structure and membrane distillation performance
publisher Institute of Physics Publishing
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046102909&doi=10.1088%2f1755-1315%2f140%2f1%2f012032&partnerID=40&md5=2ec4582bccb141eba3ef589ce98b1800
http://eprints.utp.edu.my/21617/
_version_ 1741196488519712768
score 11.62408

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