Ethanol Production from Microwave-Assisted Pretreated Rice Straw Using Free and Immobilized Cells of Trichoderma viride and Sacharomyces cerevisiae
Publication: Journal of Energy Engineering
Volume 143, Issue 2
Abstract
Microwave-assisted ferric chloride () pretreated rice straw was utilized for reducing sugars production and ethanol production with free and immobilized cells of Trichoderma viride and Sacharomyces cerevisiae. The maximum reducing sugars concentration () and (reducing sugars yield/rice straw consumption; ) from pretreated rice straw with free cells of Trichoderma viride at 84 h were much higher than those from untreated rice straw (, ). Untreated and pretreated rice straw was converted to ethanol by free cells of Trichoderma viride and Sacharomyces cerevisiae. The maximum ethanol concentration from pretreated rice straw was representing the (ethanol yield/rice straw consumption) of , which was higher than those from untreated rice straw (, ). Pretreated rice straw was used to produce ethanol by free cells of Trichoderma viride and immobilized Sacharomyces cerevisiae, and by co-immobilized cells of Trichoderma viride and Sacharomyces cerevisiae. The maximum ethanol concentration obtained by co-immobilized Trichoderma viride and Sacharomyces cerevisiae was with the of at 84 h, which was higher than those achieved by free cells of Trichoderma viride and immobilized Sacharomyces cerevisiae (, ). Co-immobilized Trichoderma viride and Sacharomyces cerevisiae were reused five times in repeated batch experiments. The ethanol concentration and the in each batch were above and after 84 h, respectively. This proved the vitality and stability of co-immobilized Trichoderma viride and Sacharomyces cerevisiae.
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Acknowledgments
The authors acknowledge the financial support from the Natural Science Foundation of Hubei Province of China (No. 2014CFB183) and the Scientific Research Project of Hubei Polytechnic University (No. 13xjz05R).
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Published In
Journal of Energy Engineering
Volume 143 • Issue 2 • April 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 19, 2015
Accepted: Jun 20, 2016
Published online: Jul 21, 2016
Discussion open until: Dec 21, 2016
Published in print: Apr 1, 2017
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