Computational Ecology and Software, 2014, 4(4): 248-268
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Modeling the dynamics of carbon dioxide removal in the atmosphere

Shyam Sundar1, Ram Naresh2, Ashish Kumar Mishra1, Agraj Tripathi3
1Department of Mathematics, P. S. Institute of Technology, Kanpur-208020, India
2Department of Mathematics, H. B. Technological Institute, Kanpur-208002, India
3Department of Mathematics, Bhabha Institute of Technology, Kanpur D.-209204, India

Received 9 August 2014;Accepted 15 September 2014;Published online 1 December 2014

The temperature of Earth's surface is increasing over the past few years due to emission of global warming gases such as CO2, CH4 and NOx from industries, power plants, etc., leading to several adverse effects on human and his environment. Therefore, the question of their removal/reduction from the atmosphere is very important. In this paper, a nonlinear mathematical model to study the removal/reduction of carbon dioxide by using suitable absorbent (such as aqueous ammonia solution, amines, sodium hydroxide, etc.) near the source of emission and externally introducing liquid species in the atmosphere is presented. Dynamical properties of the model which include local and global stabilities for the equilibrium are analyzed carefully. Model analysis is performed by considering three physical situations i.e. when both absorbent and the liquid species are used, only absorbent is used and only liquid species is used. It is shown that the concentration of carbon dioxide decreases as the rate of introduction of absorbent in the absorber increases. It decreases further as the rate of introduction of liquid species. Thus, the concentration of carbon dioxide would be reduced by a large amount if adequate amount of absorbent is used near the source of emission. The remaining amount can be reduced further by infusing liquid drops in the atmosphere. Numerical simulations are also carried out to support the analytical results.

Keywords carbon dioxide;absorbent;liquid species;stability;simulations..

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