Journal
BIOTECHNOLOGY PROGRESS
Volume 27, Issue 2, Pages 419-427Publisher
WILEY-BLACKWELL
DOI: 10.1002/btpr.545
Keywords
cellulosic ethanol; woody/forest biomass; fermentation; pretreatment; enzymatic hydrolysis
Funding
- U.S. Forest Service Program of Woody Biomass, Bioenergy, and Bioproducts (WBBB)
- Ministry of Science and Technology of China
- Chinese Scholarship Council
Ask authors/readers for more resources
This study reports comparative evaluations of sugar and ethanol production from a native aspen (Populus tremuloides) between sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) and dilute acid (DA) pretreatments. All aqueous pretreatments were carried out in a laboratory wood pulping digester using wood chips at 170 degrees C with a liquid to oven dry (od) wood ratio (L/W) of 3: 1 at two levels of acid charge on wood of 0.56 and 1.11%. Sodium bisulfite charge on od wood was 0 for DA and 1.5 or 3.0% for SPORL. All substrates produced by both pretreatments (except DA with pretreatment duration of 0) had good enzymatic digestibility of over 80%. However, SPORL produced higher enzymatic digestibility than its corresponding DA pretreatment for all the experiments conducted. As a result, SPORL produced higher ethanol yield from simultaneous saccharification and fermentation of cellulosic substrate than its corresponding DA pretreatment. SPORL was more effective than its corresponding DA pretreatment in reducing energy consumption for postpretreatment wood chip size-reduction. SPORL, with lower energy input and higher sugar and ethanol yield, produced higher sugar and ethanol production energy efficiencies than the corresponding DA pretreatment. Published 2011 American Institute of Chemical Engineers Biotechnol. Prog., 27: 419-427, 2011
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available