Document Detail


Effect of acid concentration and pulp properties on hydrolysis reactions of mercerized sisal.
MedLine Citation:
PMID:  23465940     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The influence of sulfuric acid concentration (HSO 5-25%, 100°C), crystallinity and fibers size on the hydrolysis reaction of sisal pulps were investigated, with the goal of evaluating both the liquor composition, as an important step in the production of bioethanol, and the residual non-hydrolyzed pulp, to determine its potential application as materials. Aliquots were withdrawn from the reaction media, and the liquor composition was analyzed by HPLC. The residual non-hydrolyzed pulps were characterized by SEM, their average molar mass and crystallinity index, and their size distribution was determined using a fiber analyzer. Sulfuric acid 25% led to the highest glucose content (approximately 10gL), and this acid concentration was chosen to evaluate the influence of both the fiber size and crystallinity of the starting pulp on hydrolysis. The results showed that fibers with higher length and lower crystallinity favored glucose production in approximately 12%, with respect to the highly crystalline shorter fibers.
Authors:
Talita M Lacerda; Márcia D Zambon; Elisabete Frollini
Publication Detail:
Type:  Journal Article     Date:  2012-10-23
Journal Detail:
Title:  Carbohydrate polymers     Volume:  93     ISSN:  1879-1344     ISO Abbreviation:  Carbohydr Polym     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-03-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8307156     Medline TA:  Carbohydr Polym     Country:  England    
Other Details:
Languages:  eng     Pagination:  347-56     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Macromolecular Materials and Lignocellulosic Fibers Group, Institute of Chemistry of São Carlos, University of São Paulo, CP 780, 13560-970, São Carlos, São Paulo, Brazil.
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