LAPSE:2025.0224
Published Article
LAPSE:2025.0224
A global sensitivity analysis for a bipolar membrane electrodialysis capturing carbon dioxide from the air
June 27, 2025
Abstract
Bipolar membrane electrodialysis are receiving the attention of the research community in the last years because they can help the electrification and the spread of direct air capture systems. In this work, a mathematical model of a bipolar membrane electrodialysis cell for carbon dioxide recovery is carried out in order to find the most significant parameters on efficiency through a global sensitivity analysis. The electrochemical cell can be integrated into an absorption column capturing carbon dioxide from the air. Results show that the most important parameter over all investigated figures of merit (specific energy consumption, costs, carbon dioxide desorption efficiency, potassium transport number, removal ratio of potassium cation and carbon) is the potassium cation concentration in the rich solution feeding the cell. A trade-off between energy efficiency, process speed and operational cost is suggested. Future research should be conducted in order to apply the global sensitivity analysis to the overall integrated system considering the whole carbon cycle between the bipolar membrane electrodialysis and absorption column.
Bipolar membrane electrodialysis are receiving the attention of the research community in the last years because they can help the electrification and the spread of direct air capture systems. In this work, a mathematical model of a bipolar membrane electrodialysis cell for carbon dioxide recovery is carried out in order to find the most significant parameters on efficiency through a global sensitivity analysis. The electrochemical cell can be integrated into an absorption column capturing carbon dioxide from the air. Results show that the most important parameter over all investigated figures of merit (specific energy consumption, costs, carbon dioxide desorption efficiency, potassium transport number, removal ratio of potassium cation and carbon) is the potassium cation concentration in the rich solution feeding the cell. A trade-off between energy efficiency, process speed and operational cost is suggested. Future research should be conducted in order to apply the global sensitivity analysis to the overall integrated system considering the whole carbon cycle between the bipolar membrane electrodialysis and absorption column.
Record ID
Keywords
Bipolar membrane electrodialysis, Direct air capture, Global sensitivity analysis, Mathematical modelling, Optimization, Simulation
Subject
Suggested Citation
Leonzio G, Thill A, Shah N. A global sensitivity analysis for a bipolar membrane electrodialysis capturing carbon dioxide from the air. Systems and Control Transactions 4:456-461 (2025) https://doi.org/10.69997/sct.160159
Author Affiliations
Leonzio G: Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, via Marengo 2, 09123 Cagliari, Italy; Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Thill A: Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Shah N: Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Thill A: Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Shah N: Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Journal Name
Systems and Control Transactions
Volume
4
First Page
456
Last Page
461
Year
2025
Publication Date
2025-07-01
Version Comments
Original Submission
Other Meta
PII: 0456-0461-1139-SCT-4-2025, Publication Type: Journal Article
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Published Article
LAPSE:2025.0224
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https://doi.org/10.69997/sct.160159
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Jun 27, 2025
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References Cited
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