4. Conclusion
The results from the studies have shown that alcohol can be
successfully extracted from aqueous solution using liquid emulsion
membranes, composed of hexane or heptane as membrane
phases, Span 80 as the surfactant and distilled water as the inner
aqueous phase. The rate of alcohol extraction was found to be
influenced by several extraction parameters, such as surfactant
concentration, treatment ratio, inner aqueous to membrane phase
ratio, stirring speed and stirring time. At optimum conditions,
maximum alcohol extraction of 51.45% and 49.5% in case of hexane
and heptane systems, respectively were achieved. Alcohol was successfully
extracted (>92%) from grape wine with multistage extraction
under the optimized conditions. Alcohol was also removed
(>90%) from color extract solutions from different sources with loss
in color. Studies on the swelling behavior of the liquid emulsion
membrane showed increased rate of swelling with mixing time.
4. Conclusion
The results from the studies have shown that alcohol can be
successfully extracted from aqueous solution using liquid emulsion
membranes, composed of hexane or heptane as membrane
phases, Span 80 as the surfactant and distilled water as the inner
aqueous phase. The rate of alcohol extraction was found to be
influenced by several extraction parameters, such as surfactant
concentration, treatment ratio, inner aqueous to membrane phase
ratio, stirring speed and stirring time. At optimum conditions,
maximum alcohol extraction of 51.45% and 49.5% in case of hexane
and heptane systems, respectively were achieved. Alcohol was successfully
extracted (>92%) from grape wine with multistage extraction
under the optimized conditions. Alcohol was also removed
(>90%) from color extract solutions from different sources with loss
in color. Studies on the swelling behavior of the liquid emulsion
membrane showed increased rate of swelling with mixing time.
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