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A review of nanoparticle-enhanced membrane distillation membranes: membrane synthesis and applications in water treatment
Nthunya, L.N.; Gutierrez, L.; Derese, S.; Nxumalo, E.N.; Verliefde, A.R.; Mamba, B.B.; Mhlanga, S.D. (2019). A review of nanoparticle-enhanced membrane distillation membranes: membrane synthesis and applications in water treatment. J. Chem. Technol. Biotechnol. 94(9): 2757-2771. https://dx.doi.org/10.1002/jctb.5977
In: Journal of chemical technology and biotechnology. Published for the Society of Chemical Industry by Blackwell Scientific Publications: Oxford Oxfordshire. ISSN 0268-2575; e-ISSN 1097-4660, meer
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| Author keywords |
nanoscale materials; membrane distillation membranes; water treatmenttechnology; modification; applications |
| Auteurs | | Top |
- Nthunya, L.N., meer
- Gutierrez, L., meer
- Derese, S., meer
- Nxumalo, E.N.
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- Verliefde, A.R., meer
- Mamba, B.B.
- Mhlanga, S.D.
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| Abstract |
Membrane distillation (MD) is a thermally driven process that uses low-grade energy to operate and has been extensively explored as an alternative cost-effective and efficient water treatment process compared to conventional membrane processes. MD membranes are synthesized from hydrophobic polymers, e.g. polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE) or polypropylene (PP), using various methods including phase inversion and electrospinning techniques. Recent literature on MD membranes clearly shows their important role in surface water/wastewater treatment and seawater desalination. Modification of MD membranes with nanoscale materials significantly improves their performance, preventing wetting and fouling. This review presents a critical assessment of the progress on the use of nanomaterials for the modification of MD membranes. The techniques commonly used to synthesize MD membranes, the modifications that have been adopted for the incorporation of nanomaterials onto membranes, and the unique properties these nanomaterials impart on the membranes are discussed. The use of modified membranes in different MD configurations and their application in groundwater, surface water, wastewater, brackish water and seawater treatment is reviewed. Finally, cost implications, commercial viability, environmental sustainability, and future prospects of MD are also discussed to elucidate promising approaches for a future and successful implementation of MD at an industrial scale. |
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