Development of a novel corrugated polyvinylidene difluoride membrane via improved imprinting technique for membrane distillation

Normi Izati Mat Nawi, Muhammad Roil Bilad, Nurazrina Zolkhiflee, Nik Abdul Hadi Nordin, Woei Jye Lau, Thanitporn Narkkun, Kajornsak Faungnawakij, Nasrul Arahman, T.m. Indra Mahlia

Research output: Contribution to journalArticle

Abstract

Membrane distillation (MD) is an attractive technology for desalination, mainly because its performance that is almost independent of feed solute concentration as opposed to the reverse osmosis process. However, its widespread application is still limited by the low water flux, low wetting resistance and high scaling vulnerability. This study focuses on addressing those limitations by developing a novel corrugated polyvinylidene difluoride (PVDF) membrane via an improved imprinting technique for MD. Corrugations on the membrane surface are designed to offer an effective surface area and at the same time act as a turbulence promoter to induce hydrodynamic by reducing temperature polarization. Results show that imprinting of spacer could help to induce surface corrugation. Pore defect could be minimized by employing a dual layer membrane. In short term run experiment, the corrugated membrane shows a flux of 23.1 Lm-2h-1 and a salt rejection of > 99%, higher than the referenced flat membrane (flux of 18.0 Lm-2h_asuf and similar rejection). The flux advantage can be ascribed by the larger effective surface area of the membrane coupled with larger pore size. The flux advantage could be maintained in the long-term operation of 50 h at a value of 8.6 Lm-2h-1. However, the flux performance slightly deteriorates over time mainly due to wetting and scaling. An attempt to overcome this limitation should be a focus of the future study, especially by exploring the role of cross-flow velocity in combination with the corrugated surface in inducing local mixing and enhancing system performance.

Original languageEnglish
Article number865
JournalPolymers
Volume11
Issue number5
DOIs
Publication statusPublished - 01 May 2019

Fingerprint

Distillation
Membranes
Fluxes
Wetting
polyvinylidene fluoride
Reverse osmosis
Desalination
Flow velocity
Pore size
Turbulence
Hydrodynamics
Salts
Polarization
Defects
Water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Nawi, Normi Izati Mat ; Bilad, Muhammad Roil ; Zolkhiflee, Nurazrina ; Nordin, Nik Abdul Hadi ; Lau, Woei Jye ; Narkkun, Thanitporn ; Faungnawakij, Kajornsak ; Arahman, Nasrul ; Mahlia, T.m. Indra. / Development of a novel corrugated polyvinylidene difluoride membrane via improved imprinting technique for membrane distillation. In: Polymers. 2019 ; Vol. 11, No. 5.
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abstract = "Membrane distillation (MD) is an attractive technology for desalination, mainly because its performance that is almost independent of feed solute concentration as opposed to the reverse osmosis process. However, its widespread application is still limited by the low water flux, low wetting resistance and high scaling vulnerability. This study focuses on addressing those limitations by developing a novel corrugated polyvinylidene difluoride (PVDF) membrane via an improved imprinting technique for MD. Corrugations on the membrane surface are designed to offer an effective surface area and at the same time act as a turbulence promoter to induce hydrodynamic by reducing temperature polarization. Results show that imprinting of spacer could help to induce surface corrugation. Pore defect could be minimized by employing a dual layer membrane. In short term run experiment, the corrugated membrane shows a flux of 23.1 Lm-2h-1 and a salt rejection of > 99{\%}, higher than the referenced flat membrane (flux of 18.0 Lm-2h_asuf and similar rejection). The flux advantage can be ascribed by the larger effective surface area of the membrane coupled with larger pore size. The flux advantage could be maintained in the long-term operation of 50 h at a value of 8.6 Lm-2h-1. However, the flux performance slightly deteriorates over time mainly due to wetting and scaling. An attempt to overcome this limitation should be a focus of the future study, especially by exploring the role of cross-flow velocity in combination with the corrugated surface in inducing local mixing and enhancing system performance.",
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Nawi, NIM, Bilad, MR, Zolkhiflee, N, Nordin, NAH, Lau, WJ, Narkkun, T, Faungnawakij, K, Arahman, N & Mahlia, TMI 2019, 'Development of a novel corrugated polyvinylidene difluoride membrane via improved imprinting technique for membrane distillation', Polymers, vol. 11, no. 5, 865. https://doi.org/10.3390/polym11050865

Development of a novel corrugated polyvinylidene difluoride membrane via improved imprinting technique for membrane distillation. / Nawi, Normi Izati Mat; Bilad, Muhammad Roil; Zolkhiflee, Nurazrina; Nordin, Nik Abdul Hadi; Lau, Woei Jye; Narkkun, Thanitporn; Faungnawakij, Kajornsak; Arahman, Nasrul; Mahlia, T.m. Indra.

In: Polymers, Vol. 11, No. 5, 865, 01.05.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Development of a novel corrugated polyvinylidene difluoride membrane via improved imprinting technique for membrane distillation

AU - Nawi, Normi Izati Mat

AU - Bilad, Muhammad Roil

AU - Zolkhiflee, Nurazrina

AU - Nordin, Nik Abdul Hadi

AU - Lau, Woei Jye

AU - Narkkun, Thanitporn

AU - Faungnawakij, Kajornsak

AU - Arahman, Nasrul

AU - Mahlia, T.m. Indra

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Membrane distillation (MD) is an attractive technology for desalination, mainly because its performance that is almost independent of feed solute concentration as opposed to the reverse osmosis process. However, its widespread application is still limited by the low water flux, low wetting resistance and high scaling vulnerability. This study focuses on addressing those limitations by developing a novel corrugated polyvinylidene difluoride (PVDF) membrane via an improved imprinting technique for MD. Corrugations on the membrane surface are designed to offer an effective surface area and at the same time act as a turbulence promoter to induce hydrodynamic by reducing temperature polarization. Results show that imprinting of spacer could help to induce surface corrugation. Pore defect could be minimized by employing a dual layer membrane. In short term run experiment, the corrugated membrane shows a flux of 23.1 Lm-2h-1 and a salt rejection of > 99%, higher than the referenced flat membrane (flux of 18.0 Lm-2h_asuf and similar rejection). The flux advantage can be ascribed by the larger effective surface area of the membrane coupled with larger pore size. The flux advantage could be maintained in the long-term operation of 50 h at a value of 8.6 Lm-2h-1. However, the flux performance slightly deteriorates over time mainly due to wetting and scaling. An attempt to overcome this limitation should be a focus of the future study, especially by exploring the role of cross-flow velocity in combination with the corrugated surface in inducing local mixing and enhancing system performance.

AB - Membrane distillation (MD) is an attractive technology for desalination, mainly because its performance that is almost independent of feed solute concentration as opposed to the reverse osmosis process. However, its widespread application is still limited by the low water flux, low wetting resistance and high scaling vulnerability. This study focuses on addressing those limitations by developing a novel corrugated polyvinylidene difluoride (PVDF) membrane via an improved imprinting technique for MD. Corrugations on the membrane surface are designed to offer an effective surface area and at the same time act as a turbulence promoter to induce hydrodynamic by reducing temperature polarization. Results show that imprinting of spacer could help to induce surface corrugation. Pore defect could be minimized by employing a dual layer membrane. In short term run experiment, the corrugated membrane shows a flux of 23.1 Lm-2h-1 and a salt rejection of > 99%, higher than the referenced flat membrane (flux of 18.0 Lm-2h_asuf and similar rejection). The flux advantage can be ascribed by the larger effective surface area of the membrane coupled with larger pore size. The flux advantage could be maintained in the long-term operation of 50 h at a value of 8.6 Lm-2h-1. However, the flux performance slightly deteriorates over time mainly due to wetting and scaling. An attempt to overcome this limitation should be a focus of the future study, especially by exploring the role of cross-flow velocity in combination with the corrugated surface in inducing local mixing and enhancing system performance.

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