Article | Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58) Reykjavik, Iceland, September 25th ‚Äď 27th, 2017 | Methane from Syngas by Anaerobic Digestion
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Title:
Methane from Syngas by Anaerobic Digestion
Author:
Sanjay Shah: Department of Process, Energy and Environmental Technology, University College of Southeast Norway, Norway Wenche Hennie Bergland: Department of Process, Energy and Environmental Technology, University College of Southeast Norway, Norway Rune Bakke: Department of Process, Energy and Environmental Technology, University College of Southeast Norway, Norway
DOI:
10.3384/ecp17138114
Download:
Full text (pdf)
Year:
2017
Conference:
Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58) Reykjavik, Iceland, September 25th ‚Äď 27th, 2017
Issue:
138
Article no.:
015
Pages:
114-120
No. of pages:
7
Publication type:
Abstract and Fulltext
Published:
2017-09-27
ISBN:
978-91-7685-417-4
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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Anaerobic digestion (AD) is a prominent green technology used for methane production from organic waste. Previous studies have shown that the amount of CH4 produced during anaerobic digestion can be increased by adding inorganic electron donors such as H2 and CO, both which can be produced as syngas from wood. Syngas inflow is implemented in the ADM1 model and simulations are carried out with different syngas additions to a well-documented case of wastewater treatment plant sludge AD. Three different compositions; (1) pure hydrogen, (2) 86 vol.% H2, 7 vol.% CO and 7 vol.% CO2, and (3) 44.4 vol.% H2, 33.3 vol.% CO and 22.2 vol.% CO2 were used for a first set of simulations testing process limitations. The second set of simulations were used to find out how much methane production can be increased for the given case if syngas composition is optimized. The CH4 production can be increased by 33 % by adding H2 (1) and was limited by pH going too high. Biogas CH4 content reached 92 % at this limit. The H2-rich syngas addition (2) reached 47 % CH4 production increase with 81 % CH4 content. The low H2 syngas case (3) produce more biogas but the CH4 content is reduced to 42 %. There is a narrow syngas composition range for which methane production can be increased by a factor >~ 2.7, limited by available nitrogen in the treated sludge.

Keywords: Anaerobic digestion, ADM1, Syngas addition, CH4 production, CO degradation

Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58) Reykjavik, Iceland, September 25th ‚Äď 27th, 2017

Author:
Sanjay Shah, Wenche Hennie Bergland, Rune Bakke
Title:
Methane from Syngas by Anaerobic Digestion
DOI:
http://dx.doi.org/10.3384/ecp17138114
References:
No references available

Proceedings of the 58th Conference on Simulation and Modelling (SIMS 58) Reykjavik, Iceland, September 25th ‚Äď 27th, 2017

Author:
Sanjay Shah, Wenche Hennie Bergland, Rune Bakke
Title:
Methane from Syngas by Anaerobic Digestion
DOI:
http://dx.doi.org/10.3384/ecp17138114
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Last updated: 2017-02-21