Continuous hydrogen production from organic waste.
The antibiotic effects of lactic acid bacteria, Lactobacillus paracasei, on hydrogen production were investigated using glucose as the substrate for the batch experiments. The effects of lactic acid bacteria on hydrogen fermentation depended on pH and the inhibition of hydrogen-producing bacteria was prevented by keeping the pH over 5.0. Then, a continuous hydrogen production experiment was conducted by using bean curd manufacturing waste as an actual organic waste at pH 5.5 at 35 degrees C. The increase of the substrate concentration and the addition of nitrogen gave precedence to acetic and butyric acids production in the metabolic pathway and suppressed propionic acid production. As the result, continuous hydrogen production from municipal organic waste was enabled.
Noike
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T
Advanced Research Institute for Science and Humanities, Nihon University, Tokyo 102-8275, Japan.
Ko
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IB
Yokoyama
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Kohno
Y
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Li
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D000643:Ammonium Chloride / Q000378:metabolism; D001674:Bioelectric Energy Sources; D019149:Bioreactors / Q000382:microbiology; D046969:Clostridium acetobutylicum / Q000378:metabolism; D044083:Cronobacter sakazakii / Q000378:metabolism; D021902:Enterobacter aerogenes / Q000378:metabolism; D016972:Enterobacter cloacae / Q000378:metabolism; D005232:Fatty Acids, Volatile / Q000378:metabolism; D005285:Fermentation; D005947:Glucose / Q000378:metabolism; D006859:Hydrogen / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007220:Industrial Waste; D007778:Lactobacillus / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*; D045730:Soy Foods
D005232:Fatty Acids, Volatile; D007220:Industrial Waste; D000643:Ammonium Chloride; D006859:Hydrogen; D005947:Glucose