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- Title
Experimental investigations and the modeling approach for CO<sub>2</sub> solubility in aqueous blended amine systems of monoethanolamine, 2-amino-2-methyl-1-propanol, and 2-(butylamino)ethanol.
- Authors
Li, Tianci; Yang, Congning; Tantikhajorngosol, Puttipong; Sema, Teerawat; Shi, Huancong; Tontiwachwuthikul, Paitoon
- Abstract
In this work, new CO2 solubility data on three types of aqueous amine blends were reported to complement existing databases. The experiments were conducted at temperatures of 313 K (absorption condition) and 363 K (desorption condition). The effect of the MEA concentration on the CO2 solubility in several amine blends at low CO2 partial pressure (8 to 50.65 kPa) were studied in this work, including 0.1, 0.3, 0.5 mol/L MEA + 2 mol/L AMP; 0.1, 0.3, 0.5 mol/L MEA + 2 mol/L BEA; and 0.1, 0.3, 0.5 mol/L MEA + 1, 2 mol/L AMP + 1, 2 mol/L BEA. Besides, an additional group of equilibrium CO2 solubility data were conducted at 298 K in order to estimate the heat of CO2 absorption of the blended solvents at a temperature range from 298 to 313 K. A new simplified Kent-Eisenberg model was developed for the predictions of blended solvents, and a multilayer neural network model with Levenberg–Marquardt backpropagation algorithm was developed upon five hundred reliable published experimental data. The predictions from two methods are both in good agreement with the experimental CO2 solubility data.
- Subjects
ETHANOL; SOLUBILITY; ARTIFICIAL neural networks; HEAT radiation &; absorption; CARBON sequestration; PARTIAL pressure
- Publication
Environmental Science & Pollution Research, 2022, Vol 29, Issue 46, p69402
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-022-20411-x