Post-combustion CO2 capturing by KOH solution: An experimental and statistical optimization modeling study

Shokooh Ghavamipour, Leila Vafajoo, Gilava Pourhossein, Prakash Parthasarathy and Gordon McKay

Energy & Environment, 2026, vol. 37, issue 1, 25-45

Abstract: A pilot-scale bubble column contactor has been utilized for carbon dioxide chemisorption from simulated flue gas in the temperature range 30°C to 50°C. The influence of the most important operating parameters has been investigated. A total of 25 experiments were designed using the response surface methodology (RSM) and were then carried out in the bubble contact column. The results revealed that the liquid volume in the column, the alkaline concentration, and the temperature had a positive effect, while the gas hold-up had a negative effect on the CO 2 removal efficiency. A statistical model has been developed using the RSM D-optimal experimental design method. To achieve the highest CO 2 chemisorption, several operating conditions have been optimized. The model predicted that the maximum percentage of carbon dioxide removal would be 86.64%, and under the same operating conditions the experimental removal efficiency was 87.12%.

Keywords: green-house gas; CO2 capture optimization modeling; capture efficiency 86%; KOH solution; chemisorption; bubble column contactor (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:sae:engenv:v:37:y:2026:i:1:p:25-45

DOI: 10.1177/0958305X241230944

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