Post combustion carbon capture from diesel engine exhaust using phase change solvents with absorption technique

Abstract

Carbon capture from air pollution is essential because industrialization and globalisation increase carbon dioxide (CO2) and other carbon emissions. CO2 is a source of global warming greenhouse gases. As a result, it draws more attention among the researcher's community to use novel techniques to control carbon emissions from various sources. In this study, the amino acids are employed in a carbon capture device (CCD) in the form of solution to limit carbon emissions from engine exhaust. The CCD is filled with different amino acids (L-Alanine and L-Arginine) and fixed at the end of tailpipe. A single cylinder, constant speed, four stroke diesel engine was operated at the rated power output of 5.2 kW using diesel fuel. The readings were taken for different loading condition and reaction time with and without CCD. The usage of amino acids of L-Alanine and L-Arginine in the CCD reduces the formation of carbon emissions than without CCD. At peak power output, the CO2 emission was decreased by 13.04% for L-Alanine and 21.73% for L-Arginine. Similarly, the carbon monoxide (CO) was decreased by 23.07% for L-Alanine and 38.46% for L-Arginine when compared to without CCD operation. The usage of amino acids resulted in a reduction in CO2 and CO emissions due to the variance in reaction time. Overall, it was concluded that the use of L-Arginine in the CCD absorbed maximum amount of carbon emissions (CO2 and CO) from engine exhaust than L-Alanine.