Co-Digestion of Cow Manure and Crude Glycerin

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  • KATO Shiro
    Graduate School of Animal and Food Hygiene,Obihiro University of Agriculture and Veterinary Medicine
  • YAMASHIRO Takaki
    Graduate School of Animal and Food Hygiene,Obihiro University of Agriculture and Veterinary Medicine
  • Lateef Suraju ADEKUNLE
    Graduate School of Animal and Food Hygiene,Obihiro University of Agriculture and Veterinary Medicine
  • IWASAKI Masahiro
    Graduate School of Animal and Food Hygiene,Obihiro University of Agriculture and Veterinary Medicine
  • UMETSU Kazutaka
    Graduate School of Animal and Food Hygiene,Obihiro University of Agriculture and Veterinary Medicine

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  • 乳牛ふん尿と副生グリセリンの混合メタン発酵に関する研究
  • ニュウギュウフンニョウ ト フクセイ グリセリン ノ コンゴウ メタン ハッコウ ニ カンスル ケンキュウ

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Abstract

In this study,effective use of crude glycerin was investigated. Method included the mixing of crude glycerin with dairy waste in various percentages aiming to establish the best percentage of crude glycerin that should be mixed with dairy waste, for efficient fermentation. The mixture produced high biogas volume on fermentation which apparently indicated a high methane concentration in the biogas produced. When dairy waste was mixed with 4-6% of crude glycerin, the highest volume of methane generation could be observed. It was four times of the gas produced from dairy waste fermentation without incorporation of glycerin. From these results, it is evident that crude glycerin, which can be recycled, could be effectively used in thermophilic methane fermentation.

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