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Title: Evaluation of hydrogen producing cultures using pretreated food waste
Authors: Hu, Cheng Cheng
Giannis, Apostolos
Chen, Chia-Lung
Wang, Jing-Yuan
Keywords: Initial pH
Food waste
Hydrogen yield
Issue Date: 2014
Source: Hu, C. C., Giannis, A., Chen, C. L., & Wang, J. Y. (2014). Evaluation of hydrogen producing cultures using pretreated food waste. International Journal of Hydrogen Energy, 39(33), 19337-19342.
Series/Report no.: International Journal of Hydrogen Energy
Abstract: In order to enhance bio-hydrogen production from food waste, pretreatment methods are widely used. The influence of the initial pH and autoclaving were investigated in batch experiments. Fermentative studies showed that pure cultures like Clostridium beijerinckii could directly utilize raw food waste to produce hydrogen, while other cultures (Clostridium butyricum and Clostridium pasteurianum) could produce hydrogen only after pH adjustment. In this case, the optimal starting pH of the culture was found to be 7. Autoclaving could further enhance hydrogen yields due to increased hydrolysis of food waste. The maximum hydrogen yield was achieved by C. butyricum (38.9 mL-H2/g-VSadded) after autoclaving food waste with pH adjustment at 7. In addition, the ratio acetic to butyric acid was decreased by autoclaving pretreatment, because butyrate metabolic pathway was favored in the fermentation process. However, suitable pH for bacteria growth and the low ammonia production could be achieved from autoclaving food waste.
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2014.06.056
Rights: © 2014 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd
Fulltext Permission: none
Fulltext Availability: No Fulltext
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