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

被引：61

作者：

Lee, Jae-Won ^{[1
,2
]}

Houtman, Carl J. ^{[3
]}

Kim, Hye-Yun ^{[4
]}

Choi, In-Gyu ^{[4
]}

Jeffries, Thomas W. ^{[3
]}

机构：

[1] Chonnam Natl Univ, Dept Forest Prod & Technol, Program BK21, Kwangju 500757, South Korea

[2] Chonnam Natl Univ, Bioenergy Res Ctr, Kwangju 500757, South Korea

[3] US Forest Serv, Forest Prod Lab, USDA, Madison, WI 53726 USA

[4] Seoul Natl Univ, Dept Forest Sci, Coll Agr & Life Sci, Seoul 151921, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 16期

关键词：

Scale-up; Oxalic acid pretreatment; Hydrolysate; Ethanol production; FERMENTATION INHIBITORS; ETHANOL FERMENTATION; CORN STOVER; HYDROLYSIS; XYLOSE; SACCHARIFICATION; CONVERSION; WOOD;

D O I：

10.1016/j.biortech.2011.05.022

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Building on our laboratory-scale optimization, oxalic acid was used to pretreat corncobs on the pilot-scale. 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. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：7451 / 7456

页数：6

共 24 条

[1] COMBINED CHEMICAL AND ENZYMATIC TREATMENTS OF CORN HUSK LIGNOCELLULOSICS [J].