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Fortifying spent sulfite pulping liquor with hydrolyzed reject knots

Paper ID Volume ID Publish Year Pages File Format Full-Text
17966 42708 2007 7 PDF Available
Title
Fortifying spent sulfite pulping liquor with hydrolyzed reject knots
Abstract

A limitation for spent sulfite liquor (SSL) fermentation, particularly hardwood SSL fermentation is the low sugar content. The objective of this work was to increase the sugar content of SSL through the addition and hydrolysis of reject knots from the pulp line.Factorial experiments indicated that hydrolysis yield was significantly affected by cellulase and β-glucosidase loading, concentration of SSL, knot concentration, pH and temperature. Spent sulfite liquor reduced the hydrolysis rate and yield, however this inhibition decreased with time. The resultant hydrolysates were readily fermented alone or in combination with 10% SSL. In 22% SSL, fermentation yields were reduced. Economic analysis indicated that knots would be an economically-viable source of supplemental sugars at a cellulase cost of up to $5 CDN per million FPU.

Keywords
Cellulose; Hydrolysis; Spent sulfite liquor; Enzyme
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Fortifying spent sulfite pulping liquor with hydrolyzed reject knots
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 41, Issues 1–2, 2 July 2007, Pages 44–50
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us