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KMID : 0380020090240050489
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Korean Journal of Biotechnology and Bioengineering
2009 Volume.24 No. 5 p.489 ~ p.494
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Two-step High Temperature Pretreatment Process for Bioethanol Production from Rape Stems
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Han Jae-Gun
Oh Sung-Ho
Jeong Myeong-Hoon
Kim Seung-Seop
Seo Hyeon-Beom
Jung Kyung-Hwan
Jang Young-Seok
Kim Il-Cheol
Lee Hyeon-Yong
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Abstract
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Two-step pretreatment process was investigated to efficiently hydrolyzed rape stems for obtaining fermentable sugars. The process was consisted of two consecutive steps as and 15 MPa and 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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KEYWORD
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rape stems, two-step pretreatment, alcohol fermentation
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