Two-step High Temperature Pretreatment Process for Bioethanol Production from Rape Stems
2009
Han, J.G., Kangwon National University, Chuncheon, Republic of Korea | Oh, S.H., Kangwon National University, Chuncheon, Republic of Korea | Jeong, M.H., Kangwon National University, Chuncheon, Republic of Korea | Kim, S.S., Kangwon National University, Chuncheon, Republic of Korea | Seo, H.B., Chungju National University, Jeungpyeong, Republic of Korea | Jeong, K.H., Chungju National University, Jeungpyeong, Republic of Korea | Jang, Y.S., Mokpo Experiment Station, NICS, RDA, Muan, Republic of Korea | Kim, I.C., Chonnam National University, Gwangju, Republic of Korea | Lee, H.Y., Kangwon National University, Chuncheon, Republic of Korea
Two-step pretreatment process was investigated to efficiently hydrolyzed rape stems for obtaining fermentable sugars. The process was consisted of two consecutive steps as 200℃ and 15 MPa and 374℃ and 24 MPa with the flow rate of 5 mL/min. Under this condition, 5.5 (g/L) of glucose and 25.6 (g/L) of xylose were obtained from rape stems, showing 18% of glucose yield based on 25% cellulose in the rape stems. It was also found that this process could generate less amounts of toxic residues, such as HMF (Hydroxy- Methyl-Furfural) and other fulfural components during hydrolysis process. It could reaction maintain relatively high ethanol production yield as 90% of theoretical conversion yield from glucose. Therefore, this pretreatment process could be applied to hydrolyze other cellulosic and marine resources such as woods, stem and algae for bioethanol production.
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