title: Ethanol fermentation integrated with PDMS composite membrane: An effective process.
abstract: The polydimethylsiloxane (PDMS) membrane, prepared in water phase, was investigated in separation ethanol from model ethanol/water mixture and fermentation-pervaporation integrated process. Results showed that the PDMS membrane could effectively separate ethanol from model solution. When integrated with batch ethanol fermentation, the ethanol productivity was enhanced compared with conventional process. Fed-batch and continuous ethanol fermentation with pervaporation were also performed and studied. 396.2-663.7g/m(2)h and 332.4-548.1g/m(2)h of total flux with separation factor of 8.6-11.7 and 8-11.6, were generated in the fed-batch and continuous fermentation with pervaporation scenario, respectively. At the same time, high titre ethanol production of ∼417.2g/L and ∼446.3g/L were also achieved on the permeate side of membrane in the two scenarios, respectively. The integrated process was environmental friendly and energy saving, and has a promising perspective in long-terms operation.
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Chaohui
authors.initials: C
authors.lastname: Fu
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Di
authors.initials: D
authors.lastname: Cai
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Song
authors.initials: S
authors.lastname: Hu
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Miao
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: qinpeiyong@tsinghua.org.cn.
authors.forename: Peiyong
authors.initials: P
authors.lastname: Qin
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Tianwei
authors.initials: T
authors.lastname: Tan
mesh_terms: D061249:Batch Cell Culture Techniques; D004129:Dimethylpolysiloxanes / Q000494:pharmacology*; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D007700:Kinetics; D008567:Membranes, Artificial; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000378:metabolism; D012996:Solutions; D013696:Temperature; D014835:Volatilization
chemical_list: D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; D012996:Solutions; D000431:Ethanol; C013830:baysilon
keywords: Ethanol fermentation; PDMS membrane; Pervaporation; Process integration