Modeling and simulation of net energy gain by dark fermentation

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• 作者：Karnayakage Rasika J. Perera^a ; Yalini Arudchelvam^a ; Venkataramana Gadhamshetty^b ; Nagamany Nirmalakhandan^a ; ^{nkhandan@nmsu.edu}
• 关键词：Biohydrogen production ; Dark fermentation ; Energy gain ; Modeling and simulation
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 出版时间：February, 2012
• 年：2012
• 卷：37
• 期：3
• 页码：2267-2272
• 全文大小：469 K

文摘

For dark fermentation (DF) to be accepted as a sustainable process for biohydrogen production, the net energy gain should be positive and as high as possible. A theoretical approach is proposed in this study to evaluate the net energy gain possible from hydrogen generated by the DF process as well as from the end products of DF via anaerobic digestion (AD) and microbial fuel cells (MFC). Experimental data on hydrogen evolution and aqueous end products formation from sucrose and from sucrose/dairy manure blends were used to validate the proposed approach for estimating net energy gain via DF, DF?+?AD, DF?+?MFC. Good agreement was found between the experimental and predicted net energy gain values, with overall correlation coefficient of 0.998. Based on the results of this study, DF?+?MFC is recommended as the best combination to maximize net energy gain.