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Scale-up study of oxalic acid pretreatment of agricultural lignocellulosic biomass for the production of bioethanolAuthor(s): Jae-Won Lee; Carl J. Houtman; Hye-Yun Kim; In-Gyu Choi; Thomas W. Jeffries
Source: Bioresource technology. Vol. 102, no. 16 (Aug. 2011): p. 7451-7456.
Publication Series: Scientific Journal (JRNL)
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DescriptionBuilding on our laboratory-scale optimization, oxalic acid was used to pretreat corncobs on the pilotscale. The hydrolysate obtained after washing the pretreated biomass contained 32.55 g/l of xylose, 2.74 g/l of glucose and low concentrations of inhibitors. Ethanol production, using Scheffersomyces stipitis, from this hydrolysate was 10.3 g/l, which approached the predicted value of 11.9 g/l. Diafiltration using a membrane system effectively reduced acetic acid in the hydrolysate, which increased the fermentation rate. The hemicellulose content of the recovered solids decreased from 27.86% before pretreatment to only 6.76% after pretreatment. Most of the cellulose remained in the pretreated biomass. The highest ethanol production after simultaneous saccharification and fermentation (SSF) of washed biomass with S. stipitis was 21.1 g/l.
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CitationLee, Jae-Won; Houtman, Carl J.; Kim, Hye-Yun; Choi, In-Gyu; Jeffries, Thomas W. 2011. Scale-up study of oxalic acid pretreatment of agricultural lignocellulosic biomass for the production of bioethanol. Bioresource technology. Vol. 102, no. 16 (Aug. 2011): p. 7451-7456.
KeywordsLignocellulose, biodegradation, cellulose, biotechnology, lignin, biomass energy, corncobs, biomass, ethanol, sugars, pretreatment, chemical reactions, fermentation, oxalic acid, hemicellulose, Pichia stipitis, fungi, yeast fungi, glucose, acetic acid, decay fungi, corn as fuel, biomass fuel, bioconversion, biorefining, alcohol, biofuels, saccharification, hydrolysates, xylose, scale-up
- Simultaneous saccharification and ethanol fermentation of oxalic acid pretreated corncob assessed with response surface methodology
- Evaluation of ethanol production from corncob using Scheffersomyces (Pichia) stipitis CBS 6054 by volumetric scale-up
- The roles of xylan and lignin in oxalic acid pretreated corncob during separate enzymatic hydrolysis and ethanol fermentation
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