期刊
BIORESOURCE TECHNOLOGY
卷 175, 期 -, 页码 350-357出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.112
关键词
Rice straw; Biomass; Steam explosion; Enzymatic hydrolysis; Mass balance
资金
- Indian Oil Corporation Ltd.
- Research and Development Centre, Faridabad
- Department of Biotechnology, Ministry of Science and Technology, New Delhi
Pretreatment of rice straw on pilot scale steam explosion has been attempted to achieve maximum sugar recovery. Three different reaction media viz. water, sulfuric acid and phosphoric acid (0.5%, w/w) were explored for pretreatment by varying operating temperature (160, 180 and 200 degrees C) and reaction time (5 and 10 min). Using water and 0.5% SA showed almost similar sugar recovery (similar to 87%) at 200 and 180 degrees C respectively. However, detailed studies showed that the former caused higher production of oligomeric sugars (13.56 g/L) than the later (3.34 g/L). Monomeric sugar, followed the reverse trend (7.83 and 11.62 g/L respectively). Higher oligomers have a pronounced effect in reducing enzymatic sugar yield as observed in case of water. Mass balance studies for water and SA assisted SE gave total saccharification yield as 81.8% and 77.1% respectively. However, techno-economical viability will have a trade-off between these advantages and disadvantages offered by the pretreatment medium. (C) 2014 Elsevier Ltd. All rights reserved.
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