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Bioethanol production from wood biomass hydrolysate with supercritical water treatment  

Seo, Hyeon-Beom (Division of Food and Biotechnology, Chungju National University)
Han, Jae-Gun (College of Bioscience and Biotechnology, Kangwon National University)
Choi, Won-Seok (Division of Food and Biotechnology, Chungju National University)
Lee, Oh-Kyu (Division of Wood Chemistry & Microbiology, Korea Forest Research Institute)
Lee, Soo-Min (Division of Wood Chemistry & Microbiology, Korea Forest Research Institute)
Choi, Seok-Hwan (Division of Wood Chemistry & Microbiology, Korea Forest Research Institute)
Lee, Hyeon-Yong (College of Bioscience and Biotechnology, Kangwon National University)
Jung, Kyung-Hwan (Division of Food and Biotechnology, Chungju National University)
Publication Information
KSBB Journal / v.23, no.6, 2008 , pp. 494-498 More about this Journal
Abstract
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.
Keywords
Bioethanol; Supercritical water treatment; Wood biomass; Activated charcoal; Calcium hydroxide;
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Times Cited By KSCI : 2  (Citation Analysis)
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