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Bench-scale demonstration of CO 2 capture with an electrochemically driven proton concentration process
Name
d0ra02450c.pdf
Description
Published version
Size
1.67 MB
Format
Adobe PDF
Checksum (MD5)
a1ceea4fc375bd17c10065fadc193442
Author(s)
Rahimi, Mohammad
Catalini, Giulia
Puccini, Monica
Hatton, T Alan
Date Issued
2020
Journal
RSC Advances
Publisher
Royal Society of Chemistry (RSC)
Citation
Rahimi, Mohammad, Catalini, Giulia, Puccini, Monica and Hatton, T Alan. 2020. "Bench-scale demonstration of CO 2 capture with an electrochemically driven proton concentration process." RSC Advances, 10 (29).
Version
Final published version
Abstract
© The Royal Society of Chemistry 2020. A thorough experimental investigation of a bench-scale apparatus of the proton concentration process with two symmetrical MnO2electrodes is presented, with the aim of continuous desorption of CO2from a K2CO3solution. The electrodes were fabricated through cathodic deposition, and their chemical states, morphology, and microstructural architecture were characterized with X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Successful formation of MnO2film was confirmed by XPS analysis, and the SEM images showed a uniform distribution of the film across the carbon substrate surface and along the strand, with an average thickness of ~500 nm, thus making proton ion diffusion possible. Continuous and efficient desorption of CO2from a K2CO3solution was obtained when electrodeposited MnO2electrodes were used in a flow-based proton concentration process. The amount of CO2desorbed per area of the electrode was 12-fold higher than that of a similar system. The electrochemical nature of the proton concentration process offers substantial practical advantages for the future, especially if electricity can be sustainably produced from renewable sources.
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Creative Commons Attribution Noncommercial 3.0 unported license
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DOI of Published Version
10.1039/D0RA02450C
