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Selective-exhaust gas recirculation for CO2 capture using membrane technology

Russo, Guiseppi and Prpich, George and Anthony, Edward and Montagnaro, Fabio and Jurado, Neila and Di Lorenzo, Giuseppina and GOHARI DARABKHANI, Hamidreza (2017) Selective-exhaust gas recirculation for CO2 capture using membrane technology. Journal of Membrane Science. ISSN 0376-7388 (In Press)

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Abstract or description

Membranes can potentially offer low-cost CO2 capture from post-combustion flue gas.
However, the low partial pressure of CO2 in flue gases can inhibit their effectiveness
unless methods are employed to increase their partial pressure. Selective-Exhaust Gas
Recirculation (S-EGR) has recently received considerable attention. In this study, the
performance of a dense polydimethylsiloxane (PDMS) membrane for the separation of
CO2/N2 binary model mixtures for S-EGR application was investigated using a bench-scale
experimental rig. Measurements at different pressures, at different feeding concentrations
and with nitrogen as sweep gas revealed an average carbon dioxide permeability of 2943
± 4.1%RSD Barrer. The bench-scale membrane module showed high potential to separate
binary mixtures of N2 and CO2 containing 5 to 20% CO2. The permeability was slightly
affected by feed pressures ranging from 1 to 2.4 bar. Furthermore, the separation
selectivity for a CO2/N2 mixture of 10%/90% (by volume) reached a maximum of 10.55 at
1.8 bar. Based on the results from the bench-scale experiments, a pilot-scale PDMS
membrane module was tested for the first time using a real flue gas mixture taken from the
combustion of natural gas. Results from the pilot-scale experiments confirmed the
potential of the PDMS membrane system to be used in an S-EGR configuration for capture
of CO2.

Item Type: Article
Faculty: School of Creative Arts and Engineering > Engineering
Depositing User: Andrew LITTLE
Date Deposited: 11 Dec 2017 13:15
Last Modified: 12 Dec 2017 15:21
URI: http://eprints.staffs.ac.uk/id/eprint/3963

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