Production of drinking water from seawater using membrane distillation (MD) alternative: direct contact MD and sweeping gas MD approaches
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Type
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Journal
Article
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Author
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Mohammad
Mahdi A. Shirazi
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Author
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Ali
Kargari
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Author
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Dariush
Bastani
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Author
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Leila
Fatehi
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URL
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Volume
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52
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Issue
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13-15
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Pages
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2372-2381
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Publication
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Desalination
and Water Treatment
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ISSN
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1944-3994
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Date
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2014
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Abstract
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Researchers
studied two-membrane distillation (MD) modes, direct contact MD, and sweeping
gas MD for synthesized and real (Persian Gulf) seawater desalination. A
commercial PTFE membrane with 0.22 μm pore size was characterized (using
atomic force microscopy and scanning electron microscopy) and was used for
experiments.
A multipurpose plate and frame MD module was used for desalination experiments. The effects of various operating conditions and MD module design, as well as feed type on the permeation flux have been studied. The feed temperature was observed to be the most effective operating parameter. The flow rate in both sides of the MD module was found to be effective; however, the feed flow rate showed more influence. Both the investigated modes were successfully applied for seawater desalination, whilst the direct contact mode seems to provide more permeation flux. The results suggested that the MD module design has a significant effect on the overall efficiency. At optimum conditions, a 99% salt rejection was observed for both the investigated MD modes. |
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