Climate change, resulting from combustion of fossil fuels, have become of major concern to the Global community, especially in the last two decades. Fossil fuels no doubt, are indispensable to the economic development of most countries and facilitate better living conditions for teeming populations. Improved efficiencies of combustion engines (internal and external) also present realistic and cost effective opportunities to reduce emissions and complement global efforts that is currently largely focused on the adoption of renewable energy.This paper examines CO2 reductions in combustion engines by the process of Carbonation through the application of the law of Constant composition. We evaluate the mechanical and chemical processes involved in chemosequestration using aqueous solution of Magnesium Silicate (naturally occurring Serpentinite) while defining clearly the conditions for reaction. An initial design and the method of operation for the carsequestor (the sequestration device) are presented after a proper volumetric analysis of a variable case performed under specified conditions. Cost analysis, global emissions reduction estimation and limitations are also discussed. This paper shows that the entire process is feasible and will reduce CO2emissions significantly while maintaining fuel diversity for sustainable growth.

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