Hydrogen production conditions from food waste by dark fermentation with Clostridium beijerinckii KCTC 1785 |
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Authors: | Jung Kon Kim Le Nhat Young Nam Chun Si Wouk Kim |
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Institution: | (1) Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University, Gwangju, 501-759, Korea;(2) Department of Biomaterials Engineering, Chosun University, Gwangju, 501-759, Korea |
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Abstract: | The optimum conditions for biological hydrogen production from food waste by Clostridium beijerinckii KCTC 1875 were investigated. The optimum initial pH and fermentation temperature were 7.0 and 40°C, respectively. When the
pH of fermentation was controlled to 5.5, a maximum amount of hydrogen could be obtained. Under these conditions, about 2,737
mL of hydrogen was produced from 50 g COD/L of food waste for 24 h, and the hydrogen content in the biogas was 38%. Hydrogen
production rate and yield were about 108 mL/L·h and 128 mL/g CODdegraded, respectively. High concentrations of acetic (< 5,000 mg/L) or butyric acid (< 3,000 mg/L) significantly inhibited hydrogen
production. |
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Keywords: | biohydrogen dark fermentation food waste Clostridium beijerinckii bioenergy |
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