Modeling the water scrubbing process and energy requirements for CO2 capture to upgrade biogas to biomethane
Modeling the water scrubbing process and energy requirements for CO2 capture to upgrade biogas to biomethane
Water scrubbing is the most widely used technology for removing CO2 from biogas and landfill gas. This work developed a rate-based mass transfer model of the CO2–water system for upgrading biogas in a packed bed absorption column. The simulated results showed good agreement with both a pilot-scale plant operating at 10 bar, and a large-scale biogas upgrading plant operating at atmospheric pressure. The calculated energy requirement for the absorption column to upgrade biogas to 98% CH4 (0.23 kWh Nm–3, or 4.2% of the input biogas) is a significantly closer approximation to the measured value (0.26 kWh Nm–3, or 4.8% of the input biogas) than has previously been reported in the literature. The model allows for improved design of CO2 capture and biogas upgrading operations and can also be a useful tool for more detailed cost–benefit analysis of the technology.
12783-12792
Nock, William James
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Walker, Mark
440e66f0-fce4-45cf-a73d-3716f254d87f
Kapoor, Rimika
5a5dc1e9-db68-47e5-9741-b7e47c8b9a7f
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
13 August 2014
Nock, William James
e9e71602-4442-4a87-9649-6451bc23131a
Walker, Mark
440e66f0-fce4-45cf-a73d-3716f254d87f
Kapoor, Rimika
5a5dc1e9-db68-47e5-9741-b7e47c8b9a7f
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Nock, William James, Walker, Mark, Kapoor, Rimika and Heaven, Sonia
(2014)
Modeling the water scrubbing process and energy requirements for CO2 capture to upgrade biogas to biomethane.
Industrial & Engineering Chemistry Research, 53 (32), .
(doi:10.1021/ie501280p).
Abstract
Water scrubbing is the most widely used technology for removing CO2 from biogas and landfill gas. This work developed a rate-based mass transfer model of the CO2–water system for upgrading biogas in a packed bed absorption column. The simulated results showed good agreement with both a pilot-scale plant operating at 10 bar, and a large-scale biogas upgrading plant operating at atmospheric pressure. The calculated energy requirement for the absorption column to upgrade biogas to 98% CH4 (0.23 kWh Nm–3, or 4.2% of the input biogas) is a significantly closer approximation to the measured value (0.26 kWh Nm–3, or 4.8% of the input biogas) than has previously been reported in the literature. The model allows for improved design of CO2 capture and biogas upgrading operations and can also be a useful tool for more detailed cost–benefit analysis of the technology.
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e-pub ahead of print date: 29 July 2014
Published date: 13 August 2014
Organisations:
Water & Environmental Engineering Group
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Local EPrints ID: 367420
URI: http://eprints.soton.ac.uk/id/eprint/367420
ISSN: 0888-5885
PURE UUID: bf30b845-0978-43ae-86f9-41d25c656be1
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Date deposited: 02 Sep 2014 08:58
Last modified: 15 Mar 2024 02:47
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Author:
William James Nock
Author:
Mark Walker
Author:
Rimika Kapoor
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