Investigation of biogas decomposition process for fuel cell applications (PEMFC and SOFC): Thermodynamic approach
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Author list: Khaodee W., Wongsakulphasatch S., Kiatkittipong W., Powell J., Laosiripojana N., Bumroongsakulsawat P., Assabumrungrat S.
Publisher: Taylor and Francis Group
Publication year: 2016
Journal: Journal of Chemical Engineering of Japan (0021-9592)
Volume number: 49
Issue number: 7
Start page: 728
End page: 733
Number of pages: 6
ISSN: 0021-9592
eISSN: 1881-1299
Languages: English-Great Britain (EN-GB)
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Abstract
This paper reports a thermodynamic-based study into the production of hydrogen via biogas decomposition for use in polymer electrolyte membrane fuel cells (PEMFC) and solid oxide fuel cells (SOFC). For biogas with a CO2/CH4 ratio of 40: 60, it was necessary to separate carbon dioxide before supplying the biogas to the decomposition unit to achieve higher performance. However, the decomposition of biogas with CO2 capture under autothermal conditions was not compatible with PEMFCs because the CO concentration was higher than 10 μmol/mol. For application in SOFCs, the highest H2 yields were achieved by combusting the methane-rich gas split from the decomposition reactor feed stream to heat the system, while those obtained by combusting the gas split from the decomposition reactor product stream resulted in the highest carbon yields and lowest overall CO2 emissions. © 2016 The Society of Chemical Engineers, Japan.
Keywords
decomposition, Fuel cell, Gibbs free energy minimization
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