Journal of Environmental Conservation Engineering
Online ISSN : 1882-8590
Print ISSN : 0388-9459
ISSN-L : 0388-9459
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Volume 42, Issue 2
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  • Anaerobic Digestion and Resource Process of Glycerol by Fed-Batch Culture
    Mai KASHIWAGI, KURAHASHI Kensuke, Toshiyuki NOMURA, TOKUMOTO Hayato
    2013 Volume 42 Issue 2 Pages 94-100
    Published: February 20, 2013
    Released on J-STAGE: April 03, 2013
    DOIhttps://doi.org/10.5956/jriet.42.94
    JOURNAL FREE ACCESS
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    The aim of this study was to develop anaerobic digestion of high-loading glycerol. In our previous study, anaerobic fermentation adding slight amounts of glucose as a fermentation promoter was found to convert high-loading glycerol into hydrogen, 1,3-propanediol and organic acids. In the present study, glycerol digestion based on this novel process by fed-batch culture was examined. Adding the substrate solution following removal of the culture solution, glycerol digestion and production of hydrogen, 1,3-propanediol and organic acidcontinued for a long time (more than 6months) . These results suggest that anaerobic digestion was promoted by removal of fermentative productions. The average of glycerol digestion was 49%, and the production yield of hydrogen, 1,3-propanediol and organic acid per digested glycerol was 0.42mol/mol-glycerol, 0.47mol/mol-glycerol, 0.26mol/mol-glycerol, respectively.
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