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VAPOUR PERMEATION STUDY OF WATER AND ETHANOL THROUGH CROSSLINKED CHITOSAN AND ALGINATE MEMBRANES

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Turczyn R., Gnus M., Dudek G., Tórz A., Łącka D., Strzelewicz A., Łapkowski M.
Progress on Chemistry and Application of Chitin and its Derivatives
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2015
|
vol. 20
281-288
EN
A vapour permeation of water and ethanol through homogenous chitosan and alginate membranes was investigated. The influence of the polymer matrix and crosslinking agents, and measurement protocol on the transport properties were discussed. The conducted experiments showed the greater separation factor, better stability and resistant to solvents for chemically crosslinked membranes. On the other hand, stronger association of the matrix, than the physical, caused decrease of vapour fluxes.
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PERVAPORATIVE INVESTIGATION OF ETHYL ALCOHOL DEHYDRATION

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Gnus M., Dudek G., Turczyn R., Tórz A., Łącka D., Konieczny K., Łapkowski M.
Progress on Chemistry and Application of Chitin and its Derivatives
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2015
|
vol. 20
54-63
EN
Pervaporative separation properties of crosslinked chitosan and alginate membrane on ethanol-water mixture at room temperature was studied. The influence of crosslinking agents on the separation properties were discussed. Selected crosslinking agents were affected differently on used polymer matrices. The better separation properties were obtained for membranes crosslinked by phosphoric (V) acid. The highest pervaporation separation index (309.6 kg/m2·h) and separation factor (52.6) were obtained for phosphoric (V) acid crosslinked alginate membranes, however, the greatest total flux (12.4 kg/m2·h) obtained for phosphoric acid crosslinked chitosan membranes
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