Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 6, Pages 4444-4448Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.12.095
Keywords
Ammonia pretreatment; Energy cane; Ethanol; Lignocellulosic
Funding
- U.S. Department of Energy [DE-FG36-08GO88151]
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This study is the first one ever to report on the use of high fiber sugarcane (a.k.a. energy cane) bagasse as feedstock for the production of cellulosic ethanol. Energy cane bagasse was pretreated with ammonium hydroxide (28% v/v solution), and water at a ratio of 1:0.5:8 at 160 degrees C for 1 h under 0.9-1.1 MPa. Approximately, 55% lignin, 30% hemicellulose, 9% cellulose, and 6% other (e.g., ash, proteins) were removed during the process. The maximum glucan conversion of dilute ammonia treated energy cane bagasse by cellulases was 87% with an ethanol yield (glucose only) of 23 g ethanol/100 g dry biomass. The enzymatic digestibility was related to the removal of lignin and hemicellulose, perhaps due to increased surface area and porosity resulting in the deformation and swelling of exposed fibers as shown in the SEM pictures. (C) 2011 Elsevier Ltd. All rights reserved.
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