Effects of C/N Ratio and Ph of Raw Materials on Oil Degradation Efficiency in a Compost Fermentation Process (ENVIRONMENTAL BIOTECHNOLOGY)
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概要
- 論文の詳細を見る
Waste oil treatment was attempted using a compost fermentation process. To develop a simple method for waste oil treatment, cheap and simple materials were used as compost materials. The fermentation experiment was performed using a domestic composter to determine the optimum conditions of the fermentation. Adjustment of the pH value during the compost fermentation was also important for progression of the oil degradation. When the pH value was not controlled, the pH value decreased quickly and reached about 2 and the oil degradation was stopped. Adding caustic lime to the raw materials caused the pH value of the compost to stabilize at approximately 7. The addition of a nitrogen source had a large effect on oil degradation during the compost fermentation. The optimum value of the C/N ratio of the raw materials with pH control was between 10 and 40. When the C/N ratio of the materials was adjusted to 10, 20, and 40, the rate constants for oil degradation were very similar. The rate constants for NH_4^+ consumption were also similar. Oil degradation efficiency reached 83.5% relative to the initial oil content in the compost materials. Repeated batch operation of the compost fermentation was carried out and the compost system could maintain good efficiency for oil degradation over several repeated batch operations. Finally, the compost system was applied to the treatment of recalled mayonnaise, with favorable results being obtained.
- 社団法人日本生物工学会の論文
- 2003-07-25
著者
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YANO TAKUO
Department of Fermentation Tachnology, Faculty of Engineering, Hiroshima University
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Kohda J
Hiroshima City University
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Kohda Jiro
Division Of Molecular Science Graduate School Of Science And Technology Kobe University:(present Add
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Yano Takuo
Hiroshima City University
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Yano Takuo
Department Of Fermentation Tachnology Faculty Of Engineering Hiroshima University
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SUEHARA Ken-ichiro
Department of Biotechnology, Graduate School of Engineering, Nagoya University
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Suehara Ken-ichiro
Hiroshima City University
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Nakano Yasuhisa
Hiroshima City University
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KOHDA Jiro
Department of Information Machines and Interfaces, Faculty of Information Sciences, Hiroshima City U
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NAKANO Yasuhisa
Department of Information Machines and Interfaces, Faculty of Information Sciences, Hiroshima City U
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SASAKI NAOZUMI
Department of Information Machines and Interfaces, Faculty of Information Sciences, Hiroshima City U
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Nakano Y
Hiroshima City University
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Nakano Yasuhisa
Department Of Information Machines And Interfaces Faculty Of Information Sciences Hiroshima City Uni
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Sasaki Naozumi
Department Of Information Machines And Interfaces Faculty Of Information Sciences Hiroshima City Uni
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