Experimental Measurement Solubility of Carbon Dioxide and Estimation the Heat of Reaction for Aqueous Solution MEA + 1,3-Diaminopropane

Document Type : Research Article

Authors

School of Chemical Engineering, Iran University of Science and Technology (IUST), P.O. Box 16765-163 Tehran, I.R. IRAN

Abstract

An attempt was made to investigate the capability of an aqueous solution of monoethanolamine (MEA) and  1,3-diaminopropane (DAP) for carbon dioxide absorption. The solubility of carbon dioxide (CO2) in aqueous solutions of 10wt% MEA+5wt% DAP and 12.5wt%MEA+2.5wt% DAP was measured over a temperature range of 313.15 to 333.15 K and pressure ranging from 13 to 215 kPa using the pressure decay method. The measure solubility data have been presented as equilibrium partial pressure of CO2 against loading. Results showed that the solubility of CO2 increases by decreasing temperature at constant pressure and also increasing pressure at a constant temperature. Also, the solubility of CO2 increases by increasing the concentration of DAP in aqueous solution. It can be concluded that DAP improves the solubility of CO2 and can be presented as a new additive. with the use of Gibbs-Helmholtz equation Heat of reaction calculated and results showed increasing DAP decreased heat of reaction.

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References

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Nashrieh Shimi va Mohandesi Shimi Iran
Volume 37, Issue 4 - Serial Number 90
December 2018
Pages 135-143

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