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Comparative Experimental Studies of Post-Combustion Carbon Capture Using Adsorbents in a Diesel Engine Exhaust

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Abstract

The atmospheric carbon dioxide (CO2) level has been unpredictably rising every year. Controlling emissions of CO2 released into the atmosphere is a big challenge for society. Heat engines are considered the primary sources of CO2 emissions. Despite research focusing on mitigating CO2 from power plants, efforts have recently been made to capture CO2 in engines. This research investigates the feasibility of potential adsorbents to trap CO2 in a post-combustion capture unit coupled to the diesel engine exhaust system. Activated carbons are obtained from two biomass sources, (i) palm shells and (ii) coconut shells, employing a single-stage activation method. The produced activated carbons are subjected to quantitative and elemental investigations and characterized by different techniques to examine adsorption properties. The adsorbent is packed in a capture unit and coupled to a CI engine’s exhaust. CO2 adsorption performance for both adsorbents is compared. Coconut and palm shell adsorbents capture 66% of CO2 emissions compared to conventional engine emissions during D100 fuel operation. Coconut and palm shell adsorbents capture 58% of CO2 emissions compared to conventional engine emissions during JME20 fuel operation. Results showed that about 50% of CO2 is captured using potential adsorbents in both fuel operations.

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The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.

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Acknowledgements

The authors would like to acknowledge the National Institute of Technology Rourkela, Odisha, India, for providing the test facilities to carry out the present research work.

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Conceptualization: MR, MS; methodology: MR, SKR, and MS; formal analysis and investigation: MR, SKR, and MS; writing — original draft preparation: MR and MS; writing — review and editing: MR, SKR, and MS; supervision: SKR and MS.

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Correspondence to Maniarasu Ravi.

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Ravi, M., Rathore, S.K. & Sivalingam, M. Comparative Experimental Studies of Post-Combustion Carbon Capture Using Adsorbents in a Diesel Engine Exhaust. Water Air Soil Pollut 234, 403 (2023). https://doi.org/10.1007/s11270-023-06413-6

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  • DOI: https://doi.org/10.1007/s11270-023-06413-6

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