Nora`aini Ali
Department of Engineering Science, Faculty of Science and Technology, Kolej Universiti Sains and Teknologi Malaysia (KUSTEM) Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
Nadzifah A. Rahim
Department of Engineering Science, Faculty of Science and Technology, Kolej Universiti Sains and Teknologi Malaysia (KUSTEM) Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
Asmadi Ali
Department of Engineering Science, Faculty of Science and Technology, Kolej Universiti Sains and Teknologi Malaysia (KUSTEM) Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
W. Sani
Department of Engineering Science, Faculty of Science and Technology, Kolej Universiti Sains and Teknologi Malaysia (KUSTEM) Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
W. Nik
Department of Engineering Science, Faculty of Science and Technology, Kolej Universiti Sains and Teknologi Malaysia (KUSTEM) Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
Lam Su Shiung
Institute of Tropical Aquaculture (Aquatrop), Kolej Universiti Sams and Teknologi Malaysia (RUSTEM), Mengabang Telipot, 21030 Kuala Terengganu, Malaysia
ABSTRACT
Ethanol, a coagulation medium, plays an important role in producing high performance asymmetric nanofiltration membrane. Thus, the effect of ethanol composition in coagulation bath on the performance, morphology and properties of Polyethersulfones (PES) flat sheet membrane was studied. The performances of the PES membrane were obtained from the Pure Water Flux (PWF) experiment and salt solution rejection experiment. The results showed that the permeability coefficient (Pm) in the pressure range of 0-10 bar for ET 0 (100% water), ET 50 (50% ethanol) and ET 100 (100% ethanol) were 11.971, 8.464 and 3.0823 (m3 m2 sec MPa), respectively, which showed that: Pm ET 0 > Pm ET 50 > Pm ET 100. The rejection range follows as ET 0 < ET 50 < ET 100, which were 0-10, 0-18 and 0-20%, respectively. The morphology of membranes were vary from finger-like to sponge-like with the increase of ethanol composition in coagulation bath. This shows that higher ethanol composition may create thick membrane layer and cause the water fluxes to be declined, thus enhancing the membrane rejection. It was found that ET 50 was the optimum ethanol composition for its high rejection with moderate flux and thus suitable for industrial application.
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How to cite this article
Nora`aini Ali, Nadzifah A. Rahim, Asmadi Ali, W. Sani, W. Nik and Lam Su Shiung, 2007. Effect of Ethanol Composition in the Coagulation Bath on Membrane Performance. Journal of Applied Sciences, 7: 2131-2136.
DOI: 10.3923/jas.2007.2131.2136
URL: https://scialert.net/abstract/?doi=jas.2007.2131.2136
DOI: 10.3923/jas.2007.2131.2136
URL: https://scialert.net/abstract/?doi=jas.2007.2131.2136
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