期刊
RENEWABLE ENERGY
卷 83, 期 -, 页码 850-858出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2015.05.033
关键词
Sugarcane bagasse; Two-stage acid hydrolysis; Kinetic model; Ion-exchange; Acid separation; Furfural
资金
- Council of Scientific and Industrial Research (CSIR), India
The present paper reports the two-stage hydrolysis of sugarcane bagasse to produce monomer sugars by using dilute and concentrated sulphuric acid. About 88% of the sugars present in bagasse could be recovered with a little formation of toxic compounds such as furfural/HMF. The sugar concentration in the first-stage of hydrolysis was obtained as xylose-rich solution of 49.7 g l(-1) using 8% acid concentration at 100 degrees C and a solid to liquid ratio of 1:4, whereas, with the same solid to liquid ratio of 1:4, 73.4 g l(-1) glucose-rich solution was obtained in the second-stage of hydrolysis by using 40% acid concentration at 80 degrees C. The acid hydrolysis of bagasse could be described by a first-order, two-step consecutive reaction model, where the polysaccharides first decompose into monomers through hydrolysis, and thereafter, decompose into various products in the second step. The proposed kinetic model correlates the experimental data satisfactorily. (C) 2015 Elsevier Ltd. All rights reserved.
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