Journal
BIOMASS & BIOENERGY
Volume 46, Issue -, Pages 210-217Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2012.08.024
Keywords
Rice straw; Alkaline pretreatment; RSM; Glucose yield; Ultrasonication
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) [NRF-20110005754]
- Advanced Biomass R&D Center (ABC) of Korea
- Ministry of Education, Science and Technology [ABC-20110031348]
- National Research Foundation of Korea [2010-0004181] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Response surface methodology (RSM) was employed to optimize alkaline pretreatment condition for maximum glucose yield of rice straw with respect to NaOH concentration (1.0-4.0%), reaction temperature (60-100 degrees C) and pretreatment time (30-90 min). The maximum glucose yield of 254.5 +/- 1.2 g kg(-1) biomass was obtained at the desirable pretreatment condition of 2.96%, 81.79 degrees C and 56.66 min. The ANOVA test revealed that the model and all independent parameters were considered statistically significant at 95% confidence level. Furthermore, we tried to explore the effect of ultrasonication on alkaline pretreatment. The sample treated with both NaOH and ultrasound at high power showed a slightly higher digestibility yield than the sample with NaOH at 80 degrees C, but the difference was not significant. (C) 2012 Elsevier Ltd. All rights reserved.
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