초록
<P><B>Abstract</B></P> <P>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±25.8g/L glucose could be obtained from corn stover at 45% solids loading after 96h which when fermented yielded 115.9±6.37g/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 12years. Similarly, the global warming potential was lowest for corn stover at 45% loading at −37.8gCO<SUB>2</SUB> eq./MJ ethanol produced.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hydrolysis and fermentation were conducted at 19%, 30%, and 45% solids. </LI> <LI> Corn stover at 45% (CS45) solids loading released 205±25.8g/L glucose </LI> <LI> Ethanol release for CS45 was 115.9±6.7g/L after 60h of fermentation. </LI> <LI> Techno-economic analysis revealed an ROI of 8% at 45% solids loading. </LI> <LI> Global warming potential for CS45 was −37.8 gCO<SUB>2</SUB> eq./MJ ethanol. </LI> </UL> </P>