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Organosolv fractionation process with various catalysts for improving bioconversion of triploid poplar

Paper ID Volume ID Publish Year Pages File Format Full-Text
34812 45049 2012 7 PDF Available
Title
Organosolv fractionation process with various catalysts for improving bioconversion of triploid poplar
Abstract

Triploid poplar (Populus tomentosa Carr.) was fractionated with mild organosolv process, and the effects of varying catalysts (formic acid, triethylamine and sodium hydroxide) and solvents (methanol, ethanol, n-propanol and n-butanol) on the substrate's physicochemical characteristics were examined. The data showed that neither the degree of polymerization (DP), nor the relative crystallinity was significantly influenced under the seven runs. In comparison, the addition of NaOH was more efficient on hemicelluloses dissolution, resulting in lower yields and higher glucose content of the cellulosic fractions than formic acid and triethylamine. Correspondingly, the final ethanol concentration was significantly increased from 1.83 g/L to 3.86–5.09 g/L. Besides, a certain amount of xylose (704.4–962.8 mg/L) was released in the hydrolyzates during the simultaneous saccharification and fermentation (SSF), which could be further isolated to improve the multiple utilization of raw material. This research provided some useful data for the application of mild organosolv fractionation on the utilization of whole biomass, especially for the recovery of hemicellulosic components.

► Organosolv processes with various solvents and chemicals are examined. ► Physicochemical structures of residues are comparably investigated. ► Bioconversion rates are obviously increased under basic conditions. ► The efficient isolation of hemicelluloses facilitates the utilization of biomass.

Keywords
Organosolv fractionation; Cellulose; Bioconversion; Characterization
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Organosolv fractionation process with various catalysts for improving bioconversion of triploid poplar
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 47, Issue 10, October 2012, Pages 1503–1509
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