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Membranes 2012, 2(3), 415-429;

Effectiveness of Water Desalination by Membrane Distillation Process

West Pomeranian University of Technology, Szczecin ul. Pułaskiego 10, Szczecin 70-322, Poland
Received: 13 June 2012 / Revised: 2 July 2012 / Accepted: 5 July 2012 / Published: 17 July 2012
(This article belongs to the Special Issue Energy Efficient Membranes)
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The membrane distillation process constitutes one of the possibilities for a new method for water desalination. Four kinds of polypropylene membranes with different diameters of capillaries and pores, as well as wall thicknesses were used in studied. The morphology of the membrane used and the operating parameters significantly influenced process efficiency. It was found that the membranes with lower wall thickness and a larger pore size resulted in the higher yields. Increasing both feed flow rate and temperature increases the permeate flux and simultaneously the process efficiency. However, the use of higher flow rates also enhanced heat losses by conduction, which decreases the thermal efficiency. This efficiency also decreases when the salt concentration in the feed was enhanced. The influence of fouling on the process efficiency was considered. View Full-Text
Keywords: membrane distillation; desalination; thermal efficiency membrane distillation; desalination; thermal efficiency

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Gryta, M. Effectiveness of Water Desalination by Membrane Distillation Process. Membranes 2012, 2, 415-429.

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