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Maximizing the liquid fuel yield in a biorefining process
Author(s) -
Zhang Bo,
von Keitz Marc,
Valentas Kenneth
Publication year - 2008
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.21960
Subject(s) - corn stover , biorefining , biorefinery , pulp and paper industry , lignocellulosic biomass , biomass (ecology) , biofuel , liquefaction , lignin , liquid fuel , bioenergy , heat of combustion , environmental science , chemistry , waste management , microbiology and biotechnology , agronomy , combustion , organic chemistry , engineering , biology
Biorefining strives to recover the maximum value from each fraction, at minimum energy cost. In order to seek an unbiased and thorough assessment of the alleged opportunity offered by biomass fuels, the direct conversion of various lignocellulosic biomass was studied: aspen pulp wood ( Populus tremuloides ), aspen wood pretreated with dilute acid, aspen lignin, aspen logging residues, corn stalk, corn spathe, corn cob, corn stover, corn stover pellet, corn stover pretreated with dilute acid, and lignin extracted from corn stover. Besides the heating rate, the yield of liquid products was found to be dependent on the final liquefaction temperature and the length of liquefaction time. The major compounds of the liquid products from various origins were identified by GC–MS. The lignin was found to be a good candidate for the liquefaction process, and biomass fractionation was necessary to maximize the yield of the liquid bio‐fuel. The results suggest a biorefinery process accompanying pretreatment, fermentation to ethanol, liquefaction to bio‐crude oil, and other thermo‐conversion technologies, such as gasification. Other biorefinery options, including supercritical water gasification and the effectual utilization of the bio‐crude oil, are also addressed. © 2008 Wiley Periodicals, Inc.

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