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Title: Conversion of lignocellulosics pretreated with liquid hot water to ethanol

Conversion of lignocellulosics pretreated with liquid hot water to ethanol Lignocellulosic materials pretreated using liquid hot water (LHW) (220{degrees}C, 5 MPa, 120 s) were fermented to ethanol by batch simultaneous saccharification and fermentation (SSF) using Saccharomyces cerevisiae in the presence of Trichoderma reesei cellulose. SSF of sugarcane bagasse (as received), aspen chips (smallest dimension 3 mm), and mixed hardwood flour (-60 +70 mesh) resulted in 90% conversion to ethanol in 2-5 d at enzyme loadings of 15-30 FPU/g. In most cases, 90% of the final conversion was achieved within 75 h of inoculation. Comminution of the pretreated substrates did not affect the conversion to ethanol. The hydrolysate produced from the LHW pretreatment showed slight inhibition of batch growth of S. cerevisiae. Solids pretreated at a concentration of 100 g/L were as reactive as those pretreated at a lower concentration, provided that the temperature was maintained at 220{degrees}C. 51 refs., 3 figs., 4 tabs.
Authors: ; ;
Publication Date:
OSTI Identifier:OSTI ID: 598205
Report Number(s):CONF-950587--
Journal ID: ABIBDL; ISSN 0273-2289; TRN: 98:001503-0003
Resource Type:Journal Article
Resource Relation:Journal Name: Applied Biochemistry and Biotechnology; Journal Volume: 57-58; Conference: 17. symposium on biotechnology for fuels and chemicals, Vail, CO (United States), 7-11 May 1995; Other Information: PBD: Spr 1996
Country of Publication:United States
Language:English
Subject: 09 BIOMASS FUELS; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; BAGASSE; CELLULOSE; COMMINUTION; BIOCONVERSION; ETHANOL FUELS; FERMENTATION; HOT WATER; INHIBITION; INOCULATION; SACCHARIFICATION; SACCHAROMYCES CEREVISIAE; SUBSTRATES; TRICHODERMA; RENEWABLE ENERGY SOURCES; BIOMASS; BATCH CULTURE; ENZYMATIC HYDROLYSIS; COST; EFFICIENCY; TEMPERATURE DEPENDENCE; CONCENTRATION RATIO; PARTICLE SIZE; REDUCTION