Use of different alkaline pretreatments and enzyme models to improve low-cost cellulosic biomass conversion

CCUR > College of Environmental Planning & Bioresources > College of Agriculture > Department of Animal Science > journal articles > Item 987654321/24261

Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/24261

Title:	Use of different alkaline pretreatments and enzyme models to improve low-cost cellulosic biomass conversion
Authors:	Chen, BY (Chen, Bo-Yuan) Chen, SW (Chen, Shiau-Wei) Wang, HT (Wang, Han-Tsung)
Contributors:	Dept Anim Sci
Keywords:	Cellulosic biomass Alkaline pretreatment Cellulytic enzyme model Enzymatic hydrolysis Sugar yield
Date:	2012-04
Issue Date:	2013-02-21 15:06:23 (UTC+8)
Abstract:	Two commonly alkaline pretreatment processes base on aqueous ammonia and lime under different enzyme hydrolysis models were evaluated to provide comparative sugar production performance from silvergrass, napiergrass and rice straw. The chemical composition variation of all biomass were nearly in stable after 4 weeks pretreatment under room temperature and recovery of the cellulose fraction was >90% by both pretreatment methods, the silvergrass recovered more dry matter than other biomass after pretreatment. Compared with other combination of pretreatment and enzyme model, mixed enzyme model after lime pretreatment significantly enhanced the biomass degradation especially in silvergrass and rice straw, but single enzyme supplement (cellulase or hemicellulase) result in limited sugar yield in this study. The biomass conversion result showed that considerable sugar yield from untreated napiergrass under the mixed enzyme model. However, alkaline pretreatment had no positive effect on glucose conversion from napiergrass. Increasing the mixed enzyme activity from 2.89 to 10.68 FPU g(-1) improved the glucose yield from 3.4 to 4.4 times and from 2.8 to 3.3 times after ammonia and lime pretreatment, respectively. The findings of this study suggest that pretreatment methods and enzyme loading model should be considered simultaneously to enhance cellulosic biomass degradation. Furthermore, the pretreatment method should be applied according to the fiber composition of the biomass. The suitable pretreatment process and constituent of enzyme mixture for individual cellulosic biomass is a promising line of inquiry. (C) 2012 Elsevier Ltd. All rights reserved.
Relation:	BIOMASS & BIOENERGY 卷: 39 特刊: SI 頁數: 182-191
Appears in Collections:	[Department of Animal Science] journal articles

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	537	View/Open

View Licence

Loading...