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Theoretical and experimental studies on desalination using the sweeping gas membrane distillation method

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Khayet Souhaimi, Mohamed and Godino Gómez, María Paz and Mengual Cabezón, Juan Ignacio (2003) Theoretical and experimental studies on desalination using the sweeping gas membrane distillation method. Desalination, 157 (01-mar). pp. 297-305. ISSN 0011-9164

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Official URL: http://dx.doi.org/10.1016/S0011-9164(03)00409-0


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Abstract

Sweeping gas membrane distillation was investigated as a possible technique for desalination by using a shell-and-tube polypropylene membrane module. Humid air was employed as the vapor carrier gas and the feed solution was circulated in counter-current through the lumen side of the membrane module. The effects of the process parameters, liquid feed flow rate, feed temperature, air flow rate and salt concentration on the distillate flux have been investigated. A theoretical model that considers the heat and mass transfer through microporous and hydrophobic membranes as well as the temperature and concentration polarization effects was developed and validated with the experimental data of distilled water and sat aqueous feed solutions. The distillate flux decreases with the salt concentration, but no drastic flux decline was observed with the increase of the feed electrical conductivity up to 182 mS/cm. High-purity water was obtained.


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© 2003 Elsevier Science B.V. Conference on Desalination and the Environment - Fresh Water for All (2003. Malta, Italy). Economical support from the University Complutense of Madrid is acknowledged.

Uncontrolled Keywords:Desalination; Sweeping gas membrane distillation; Heat and mass transfer
Subjects:Sciences > Physics > Thermodynamics
ID Code:25146
Deposited On:25 Apr 2014 07:44
Last Modified:10 Nov 2015 14:52

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