CO 2 Absorption Capacity and its Enthalpy of Absorption in Aqueous Blend of MDEA/Piperazine/Arginine
Abstract In this work, the solubility data of CO 2 in aqueous blends of N-Methyldiethanolamine, Piperazine and Arginine (MDEA/PZ/ARG) of a total concentration of two moles is presented. CO 2 partial pressure was varied from 9 to 99 kPa while temperature ranged from 293 to 323 K in increment of 10 de...
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| Published in | IOP conference series. Materials Science and Engineering Vol. 736; no. 2; p. 22088 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
01.01.2020
|
| Online Access | Get full text |
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| Summary: | Abstract
In this work, the solubility data of CO
2
in aqueous blends of N-Methyldiethanolamine, Piperazine and Arginine (MDEA/PZ/ARG) of a total concentration of two moles is presented. CO
2
partial pressure was varied from 9 to 99 kPa while temperature ranged from 293 to 323 K in increment of 10 degrees. The experimental results showed that the solubility of CO
2
decreased with increasing ARG ration in the mixture. These results were modelled using a semi-empirical (SE) vapor liquid equilibrium (VLE) model. The model was found able to adequately represent the experimental data with an average absolute deviation (AAD) less than 3.13 %. Using a truncated form of the semi-empirical model, the heat of CO
2
absorption, ΔH
ab
, at low pressure was estimated and found to be in the range of 32-66 kJ/mole CO
2
absorbed. |
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| ISSN: | 1757-8981 1757-899X |
| DOI: | 10.1088/1757-899X/736/2/022088 |