Flow-Through Pretreatment of Corn Stover by Recycling Organosolv to Reduce Waste Solvent

Yong Cheol Park, Tae Hyun Kim and Jun Seok Kim
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Yong Cheol Park: Department of Chemical Engineering, Kyonggi University, Suwon 16227, Korea
Tae Hyun Kim: Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Korea
Jun Seok Kim: Department of Chemical Engineering, Kyonggi University, Suwon 16227, Korea

Energies, 2018, vol. 11, issue 4, 1-8

Abstract: In this study, the optimum conditions for pretreatment of corn stover using organosolv were determined. The predicted optimum conditions, determined using the response surface methodology, were ethanol concentration of 56.6 wt %, reaction temperature of 187.5 °C, and 320 mL of liquid throughput. Moreover, the pretreatment using recycled organosolv was carried out under the predicted optimum conditions. The pretreatment effect of the organosolv decreased as the organosolv was reused in the pretreatment process. When performing pretreatment with the initial organosolv, enzymatic digestibility for glucan was 71.0%. The digestibility was reduced as low as less than 66% in the first reuse process. Nevertheless, when repeatedly reusing the organosolv, the glucan digestibility remained mostly stable. It was confirmed that organosolv can be reused in the flow-through pretreatment of corn stover.

Keywords: biomass; pretreatment; response surface methodology; corn stover; ethanol; organosolv (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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