Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion
The purpose of this study was to optimize the alkaline, ultrasonication, and thermal pretreatment in order to enhance the solubilization of food waste (FW) for the production of volatile fatty acids, hydrogen, and methane in thermophilic batch anaerobic digestion. Initially, the effect of pretreatme...
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sg-ntu-dr.10356-802822020-03-07T11:43:28Z Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion Menon, Ajay Ren, Fei Wang, Jing-Yuan Giannis, Apostolos School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Thermophilic AD pH adjustment Ultrasonication Substrate solubilization Food waste The purpose of this study was to optimize the alkaline, ultrasonication, and thermal pretreatment in order to enhance the solubilization of food waste (FW) for the production of volatile fatty acids, hydrogen, and methane in thermophilic batch anaerobic digestion. Initially, the effect of pretreatment techniques in the acidogenic phase was studied, and the optimal combinations of different conditions were determined. It was found that each pretreatment technique affected food waste solubilization differently. Alkaline pretreatment increased hydrogen yield in the acidogenic sludge by four times over control. COD solubilization was increased by 47 % when FW pre-heated at 130 °C for 60 min. Ultrasonication at 20 kHz and 45 min reduced processing time to 38 h from the 60–80 h needed in normal operation. Response surface methodology (RSM) was used to optimize a combination of alkaline, ultrasonication, and thermal pretreatment. Optimized conditions were applied to methanogenic single-stage thermophilic AD process, and their impact on biogas production was monitored. Results showed that FW heated at 130 °C for 50 min geminates biogas production compared to control experiment. In conclusion, a short thermal pretreatment regime could significant affect biogas production in single-stage thermophilic AD. 2016-04-28T06:24:17Z 2019-12-06T13:46:24Z 2016-04-28T06:24:17Z 2019-12-06T13:46:24Z 2016 2015 Journal Article Menon, A., Ren, F., Wang, J. Y., & Giannis, A. (2016). Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion. Journal of Material Cycles and Waste Management, 18(2), 222-230. 1438-4957 https://hdl.handle.net/10356/80282 http://hdl.handle.net/10220/40463 10.1007/s10163-015-0395-6 190946 en Journal of Material Cycles and Waste Management © 2015 Springer Japan. |
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Thermophilic AD pH adjustment Ultrasonication Substrate solubilization Food waste |
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Thermophilic AD pH adjustment Ultrasonication Substrate solubilization Food waste Menon, Ajay Ren, Fei Wang, Jing-Yuan Giannis, Apostolos Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
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The purpose of this study was to optimize the alkaline, ultrasonication, and thermal pretreatment in order to enhance the solubilization of food waste (FW) for the production of volatile fatty acids, hydrogen, and methane in thermophilic batch anaerobic digestion. Initially, the effect of pretreatment techniques in the acidogenic phase was studied, and the optimal combinations of different conditions were determined. It was found that each pretreatment technique affected food waste solubilization differently. Alkaline pretreatment increased hydrogen yield in the acidogenic sludge by four times over control. COD solubilization was increased by 47 % when FW pre-heated at 130 °C for 60 min. Ultrasonication at 20 kHz and 45 min reduced processing time to 38 h from the 60–80 h needed in normal operation. Response surface methodology (RSM) was used to optimize a combination of alkaline, ultrasonication, and thermal pretreatment. Optimized conditions were applied to methanogenic single-stage thermophilic AD process, and their impact on biogas production was monitored. Results showed that FW heated at 130 °C for 50 min geminates biogas production compared to control experiment. In conclusion, a short thermal pretreatment regime could significant affect biogas production in single-stage thermophilic AD. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Menon, Ajay Ren, Fei Wang, Jing-Yuan Giannis, Apostolos |
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Article |
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Menon, Ajay Ren, Fei Wang, Jing-Yuan Giannis, Apostolos |
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Menon, Ajay |
title |
Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
title_short |
Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
title_full |
Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
title_fullStr |
Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
title_full_unstemmed |
Effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
title_sort |
effect of pretreatment techniques on food waste solubilization and biogas production during thermophilic batch anaerobic digestion |
publishDate |
2016 |
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https://hdl.handle.net/10356/80282 http://hdl.handle.net/10220/40463 |
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1681040973272973312 |