Journal
RENEWABLE ENERGY
Volume 62, Issue -, Pages 362-368Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2013.07.041
Keywords
Sugarcane tops; Pretreatment; Lignocellulosic biomass; Hydrolysis; Response surface methodology
Funding
- Technology Information, Forecasting and Assessment Council (TIFAC)
- Department of Science and Technology, Government of India
- Council of Scientific and Industrial Research (CSIR), New Delhi
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Alkali pretreatment of sugarcane tops was carried out with 3% NaOH for 60 min at 121 degrees C in a laboratory autoclave. The effect of solid loading, enzyme loading, incubation time and surfactant concentration on enzymatic saccharification was studied using a response surface method according to Box-Behnken design. Under optimized conditions 77.5% sugar was recovered from the pretreated biomass. This yield was seven times higher than that obtained with untreated sugarcane tops. A substantial amount of lignin (90%) was removed by this pretreatment method. Physicochemical characterization of native and alkali pretreated sugarcane tops were carried out by XRD, FTIR and SEM and the changes in the chemical composition were also monitored. The X-ray diffraction profile showed that the degree of crystallinity was higher for alkali pretreated biomass than that for native. (C) 2013 Elsevier Ltd. All rights reserved.
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