Bioethanol production from wood biomass hydrolysate with supercritical water treatment
2008
Seo, H.B. (Chungju National University, Jeungpyung, Republic of Korea) | Han, J.G. (Kangwon National University, Chuncheon, Republic of Korea) | Choi, W.S. (Chungju National University, Jeungpyung, Republic of Korea) | Lee, O.K. (Korea Forest Research Institute, Seoul, Republic of Korea) | Lee, S.M. (Korea Forest Research Institute, Seoul, Republic of Korea) | Choi, S.H. (Korea Forest Research Institute, Seoul, Republic of Korea) | Lee, H.Y. (Kangwon National University, Chuncheon, Republic of Korea) | Jung, K.H. (Chungju National University, Jeungpyung, Republic of Korea), E-mail: [email protected]
We investigated the bioethanol production using wood biomass hydrolysate which obtained from the supercritical water (SCW) treatment. SCW-treated hydrolysate was used C-source of culture medium in shaking flask culture for bioethanol production. When the concentrated SCW-treated hydrolysate (SCW3) was used, yeast cell growth was slower compared with those in other SCW-treated hydrolysate (SCW1, SCW2). In addition, the bioethanol productions were 0.51 to 0.56 (%,w/v) when SCW1, SCW2, and SCW3 were used. Therefore, we removed the toxic phenolic compound in SCW-treated hydrolysate by pretreatments of activated charcoal and calcium hydroxide. Activated charcoal reduced more efficiently the phenolic compounds in SCW3 by 94.6%. Finally, when we pretreated SCW3 by activated charcoal and this was used for bioethanol production, 0.96 (%,w/v) bioethanol was produced and the ethanol yield based on reducing sugar reached 0.5.
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