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Effect of solids loading on ethanol production: Experimental, Economic and Environmental analysis
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Date
2017-07-11
Authors
Kadhum, Haider Jawad
Rajendran, Karthik
Murthy, Ganti S.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Published Version
Abstract
This study explores the effect of high-solids loading for a fed batch enzymatic hydrolysis and fermentation. The solids loading considered was 19%, 30% and 45% using wheat straw and corn stover as a feedstock. Based on the experimental results, techno-economic analysis and life cycle assessments were performed. The experimental results showed that 205±25.8 g/L glucose could be obtained from corn stover at 45% solids loading after 96h which when fermented yielded 115.9±6.37 g/L ethanol after 60h of fermentation. Techno-economic analysis showed that corn stover at 45% loading yielded the highest ROI at 8% with a payback period less than 12 years. Similarly, the global warming potential was lowest for corn stover at 45% loading at -37.8 gCO2 eq./MJ ethanol produced.
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Keywords
Solids loading , Enzymatic hydrolysis , Fermentation , Lignocelluloses , Techno-economic analysis , Environmental impacts
Citation
Kadhum, H. J., Rajendran, K. and Murthy, G. S. 'Effect of solids loading on ethanol production: Experimental, Economic and Environmental analysis', Bioresource Technology. In Press. doi: 10.1016/j.biortech.2017.07.047