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Title: Scale-up study of oxalic acid pretreatment of agricultural lignocellulosic biomass for the production of bioethanol

Source: Bioresource Technology, 102 (2011) 7451-7456. doi:10.1016/j.biortech.2011.05.022; 2011.

Author(s)Lee, Jae-Won; Houtman, Carl J.; Kim, Hye-Yun; Choi, In-Gyu; Jeffries, Thomas W.

Publication Year: 2011  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4709-1A   FPL-4712-1A

Abstract: Building 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.

Keywords: Lignocellulose; 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

Publication Review Process: Formally Refereed

File size: 494 kb(s)

Date posted: 11/08/2011

This publication is also viewable on Treesearch:  view
RITS Product ID: 39888
Current FPL Scientist associated with this product
Houtman, Carl J.
Chemical Engineer

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