Experimental Investigation on Carbon Dioxide Reduction by Using Post Combustion Carbon Capture System in a Spark-Ignition Engine

Abstract

Global warming is a serious environmental concern that affects humans, wildlife, and ecosystems. Carbon dioxide reduction is the need of the hour as it is a major constituent of global warming. The quantum of carbon dioxide released in the exhaust depends on the number of carbon atoms present in the fuel used. The present study investigates the reduction of engine out carbon dioxide emission. For carbon dioxide reduction, a post-combustion capture system is used. In the post-combustion capture system, carbon dioxide is absorbed by using an absorption catalyst. In this capture system, carbon dioxide is absorbed after the combustion. Among various absorption catalysts, monoethanolamine (MEA) is used, as it can react more quickly with carbon dioxide than other absorbents. Monoethanolamine is continuously injected in the exhaust manifold. An empty chamber is added in the exhaust manifold for increasing the residence time of the reaction of amine with carbon dioxide. MEA reacts with carbon dioxide forms ammonium carbamate. Carbamate is approved by the Environmental Protection Agency as an inert ingredient, used for insect and rodent control in areas where agricultural products are stored.