Ability of a perfluoropolymer membrane to tolerate by-products of ethanol fermentation broth from dilute acid-pretreated rice straw
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Ability of a perfluoropolymer membrane to tolerate by-products of ethanol fermentation broth from dilute acid-pretreated rice straw
학술지
Biochemical engineering journal
저자명
Sasaki, K.; Matsuda, F.; Hasunuma, T.; Ogino, C.; Urairi, M.; Yoshida, K.; Kondo, A.
초록
A perfluoropolymer (PFP) membrane has been prepared for use in vapor permeation to separate aqueous ethanol mixtures produced from rice straw with xylose-assimilating recombinant Saccharomyces cerevisiae. PFP membranes commonly have been used for dehydration process and possess good selectivity and high permeances. The effects of by-products during dilute acid pretreatment, addition of yeast extract, and ethanol fermentation on PFP membrane performance were investigated. While feeding mixtures of ethanol (90wt%) in water, to which individual by-products (0.1-2g/L) were added, the PFP membrane demonstrated no clear change in permeation rate (439-507gm<SUP>-2</SUP>h<SUP>-1</SUP>) or separation factor (14.9-23.5) from 2 to 4h of the process. The PFP membrane also showed no clear change in permeation rate (751-859gm<SUP>-2</SUP>h<SUP>-1</SUP>) or separation factor (12.5-13.8) while feeding the mixture (final ethanol conc.: 61wt%) of ethanol and distillation of the fermentation broth using a suspended fraction of dilute acid-pretreated rice straw for 20h. These results suggest that the PFP membrane can tolerate actual distillation liquids from ethanol fermentation broth obtained from lignocellulosic biomass pretreated with dilute acid.