Membrane distillation for water separation from high concentrated salt solutions
Abstract
Population boom accompanied by increased demand for clean water, when the source of clean water is gradually exhausted, the desalination of seawater is one of the sustainable developing methods. To remove salt from seawater, people can use different technologies: evaproration, nano, and reverse osmosis. Besides, membrane distillation technology is a promising method to produce clean water from brackish and seawater. The purpose of the study to investigate sweeping gas membrane distillation for separate water from the highly concentrated salt solution. In this system, the 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, the liquid feed flow rate, feed temperature, air flow rate and salt concentration on the distillate flux have been investigated. The results showed that the temperature of feed, the flow rate, and moisture content of gas are conditions greatest influence to effective sweeping gas membrane distillation as can be seen from Figure 3, Figure 4 and Figure 7.
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References
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