Conversion of bark-rich biomass mixture into fermentable sugar by two-stage dilute acid-catalyzed hydrolysis

被引：58

作者：

Kim, KH ^{[1
]}

Tucker, M

Nguyen, Q

机构：

[1] Korea Univ, Coll Life & Environm Sci, Div Food Sci, Seoul 136713, South Korea

[2] Biotechnol Div Fuels & Chem, Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

BIORESOURCE TECHNOLOGY | 2005年 / 96卷 / 11期

关键词：

two-stage dilute acid-catalyzed hydrolysis; bark; sawmill residues; Hemlock; softwood; biomass; pretreatment; sugar;

D O I：

10.1016/j.biortech.2004.10.017

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Despite high availability and low cost, bark has not actively been considered as a biomass feedstock for producing bio-based products due to its high content of extractives and lignin. In this study, to investigate the feasibility of utilizing bark-rich sawmill residues for producing value-added materials, the mixed Hemlock hog fuel/pin chips (85:15 by dry weight) from a local sawmill were converted into fermentable sugar by two-staige dilute sulfuric acid-catalyzed hydrolysis. Combining the sugar yields from the first-stage (190 degrees C for 150 s with 1.1% acid) and second-stage (210 degrees C for 115 s with 2.5% acid) hydrolyses, which aimed to maximize the recovery of mannose/galactose and glucose, respectively, 13.6 g of glucose (46% theoretical maximum), 10.5 g of mannose and galactose (98% theoretical maximum), and 2.8 g of xylose (85% theoretical maximum) were obtained per. 100 g of the original dry feedstock. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1249 / 1255

页数：7

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