Supported liquid membranes (SLM) composed of oleyl alcohol (OA) and poly(octylmethylsiloxane) (POMS) in microporous flat sheets were investigated for the pervaporation of 1-butanol. Water contact angle and partition coefficients were used to characterize the SLMs. Optimum pervaporation performance was attained at 30wt% OA SLM wherein high separation factor (α=279) and total flux (J<SUB>T</SUB>=95.9g/(m<SUP>2</SUP>h)) were achieved from 2.5% (w/v) 1-butanol/water feed, at 60<SUP>o</SUP>C. In these conditions, 27% reduction in J<SUB>T</SUB> was observed when fed with model fermentation broths but remained highly selective toward 1-butanol (α=76.4). SLM stability was demonstrated with <4% LM loss after operation.
발행연도
2013
발행기관
Korean Society of Industrial and Engineering Chemistry