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Energy Balance of Dark Anaerobic Fermentation as a Tool for Sustainability Analysis by Bernardo Ruggeri; Tonia Tommasi; Guido Sassi is a Engineering article available to read on EtoBox.

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A process aimed at producing energy needs to produce more energy than the energy necessary to run the process itself in order to be energetically sustainable. In this paper, an energy balance of a batch anaerobic bioreactor has been defined and calculated, both for different operative conditions and for different reactor scales, in order to analyze the sustainability of hydrogen production through dark anaerobic fermentation. Energy production in the form of hydrogen and methane, energy to warm up the fermentation broth, energy loss during fermentation and energy for mixing and pumping have been considered in the energy balance. Experimental data and literature data for mesophilic microorganism consortia have been used to calculate the energy balance. The energy production of a mesophilic microorganism consortium in a batch reactor has been studied in the 16e50 C temperature range. The hydrogen batch dark fermentation resulted to only have a positive net production of energy over a minimal reactor dimension in summer conditions with an energy recovery strategy. The best working temperature resulted to be 20 C with 20% of available energy. Hydrogen batch dark fermentation may be cou

Who reads Energy Balance of Dark Anaerobic Fermentation as a Tool for Sustainability Analysis?

Author

Bernardo Ruggeri; Tonia Tommasi; Guido Sassi

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0360-3199)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)