Journal
EUROPEAN POLYMER JOURNAL
Volume 45, Issue 3, Pages 813-819Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2008.11.043
Keywords
Dense polymer membranes; Biofuel; Fermentation; Ionic liquids; Pervaporation
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Funding
- European Community [MERG-Cr-2006-44737]
- Czech Science Foundation [104/08/0600]
- Grant Agency of the Czech Republic [203/08/0465]
- Ministry of Education of the Czech Republic [MSM 6046137307]
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Pervaporation was used for removal of butan-1-ol from its 5 wt.% of aqueous solution, at which the concentration of Clostridium acetobutylicum starts to decrease. The polydimethylsiloxane (PDMS) membrane containing 0, 10, 20 or 30 wt.% of benzyl-3-butylimidazolium tetrafluoroborate ([BBIM][BF4]) ionic liquid was used. Differential scanning calorimetry measurements showed that PDMS-[BBIM][BF4] membranes (though optically homogeneous) contained PDMS and [BBIM][BF4] phases. Pervaporation selectivity increased and total flux through membranes raised moderately with an increased content of [BBIM][BF4] in PDMS-[BBIM][BF4] membranes. Hence, immobilization of a proper ionic liquid in a membrane results in the creation of pervaporation membranes, effective in the removal of alcohol from fermentation broths. (C) 2008 Elsevier Ltd. All rights reserved.
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