Modeling and Simulation of Chemical Adsorption of CO2 by Polyaspartamide in a Fixed-Bed Column

Document Type : Research Article

Authors

School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, I.R. IRAN

Abstract

In this study, the chemical adsorption modeling of CO2 in the fixed bed column is determined. In the adsorbent modeling, the granules are assumed to be spherical, and by writing the mass balance around a radial element, a partial differential equation has obtained that shows the variation in adsorption versus the direction of radius and time. By applying the boundary conditions and initial condition in terms of the physics of the problem, this equation can be solved, but due to the complexity of its analytical solution, the equations were solved using a combination of the method of lines and finite difference methods. For the modeling of the fixed bed column, the column is aligned along with the height, and by writing the mass balance around it, the partial differential equation is obtained. In order to ensure the modeling process, the model has been verified using experimental data and numerical modeling of the Kelvin Odafe‌ Yoro model. Finally, parametric studies have been done on the chemical adsorption of CO2 in the fixed bed column. The amount of R2 in the CO2 breakthrough curves on polyaspartamide and in the experimental and simulated equilibrium amount of CO2 adsorbed by polyaspartamide at the time is 0.99 and RMSE is approximately 10% for them.

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References

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Nashrieh Shimi va Mohandesi Shimi Iran
Volume 38, Issue 4 - Serial Number 94
November 2019
Pages 189-198

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