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- Title
An overview on the use of graphene-based membranes for membrane distillation.
- Authors
Fuzil, Nurul Syazana; Othman, Nur Hidayati; Alias, Nur Hashimah; Mat Shayuti, Muhammad Shafiq; Shahruddin, Munawar Zaman; Marpani, Fauziah; Lau, Woei Jye; Ismail, Ahmad Fauzi; Dzarfan Othman, Mohd Hafiz; Kusworo, Tutuk Djoko; Shirazi, Mohammad Mahdi A.
- Abstract
Recently, a thermally-driven membrane process known as membrane distillation (MD) has emerged as an alternative to the high-pressure membrane process for contaminants removal from water. The driving force for MD is a vapor pressure gradient produced by a temperature differential across a hydrophobic porous membrane, which results in the transfer of water vapor from hot to cold side. However, the feasibility of MD for industry adoption is hampered by several issues such as temperature polarisation effects, low permeate flux, membrane wetting, and fouling. The membrane properties are known to have a significant role in controlling the final performances of MD. This review first looks into the feature of ideal MD membrane properties. Then, the use of graphenebased materials for the development of high performances MD membrane is discussed. Besides enhancing the water permeability and selectivity of MD, the incorporation of graphene offers additional properties such as anti-fouling, antibacterial, and photodegradation. The future direction of using graphene-based photothermal material in MD for heat generation under solar irradiation is also reviewed. It is found that the localised heating at membrane surfaces by photothermal material can minimise temperature polarisation effects and subsequently enhance the driving force for effective vapour transport. Thus, a more energy-efficient MD system can be developed.
- Subjects
MEMBRANE distillation; VAPOR pressure; WATER transfer; TEMPERATURE effect
- Publication
Desalination & Water Treatment, 2022, Vol 257, p243
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2022.28460