Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM)
This paper investigated the solubility of carbon dioxide (CO<sub>2</sub>) in an aqueous solution of monoethanolamine (MEA) and 1-butyl-3-methylimidazolium dibutylphosphate ((BMIM)(DBP)) ionic liquid (IL) hybrid solvents. Aqueous solutions of MEA-(BMIM)(DBP) hybrid solvents containing dif...
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/6/1779 |
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| author | Fatin Nor Arissa Azhar Mohd Faisal Taha Siti Musliha Mat Ghani Muhammad Syafiq Hazwan Ruslan Noor Mona Md Yunus |
| author_facet | Fatin Nor Arissa Azhar Mohd Faisal Taha Siti Musliha Mat Ghani Muhammad Syafiq Hazwan Ruslan Noor Mona Md Yunus |
| author_sort | Fatin Nor Arissa Azhar |
| collection | DOAJ |
| description | This paper investigated the solubility of carbon dioxide (CO<sub>2</sub>) in an aqueous solution of monoethanolamine (MEA) and 1-butyl-3-methylimidazolium dibutylphosphate ((BMIM)(DBP)) ionic liquid (IL) hybrid solvents. Aqueous solutions of MEA-(BMIM)(DBP) hybrid solvents containing different concentrations of (BMIM)(DBP) were prepared to exploit the amine’s reactive nature, combined with the IL’s non-volatile nature for CO<sub>2</sub> absorption. Response surface methodology (RSM) based on central composite design (CCD) was used to design the CO<sub>2</sub> solubility experiments and to investigate the effects of three independent factors on the solubility of CO<sub>2</sub> in the aqueous MEA-(BMIM)(DBP) hybrid solvent. The three independent factors were the concentration of (BMIM)(DBP) (0–20 wt.%), temperature (30 °C–60 °C) and pressure of CO<sub>2</sub> (2–30 bar). The experimental data were fitted to a quadratic model with a coefficient of determination (<i>R</i><sup>2</sup>) value of 0.9791. The accuracy of the developed model was confirmed through additional experiments where the experimental values were found to be within the 95% confidence interval. From the RSM-generated model, the optimum conditions for CO<sub>2</sub> absorption in aqueous 30 wt% MEA-(BMIM)(DBP) were 20 wt% of (BMIM)(DBP), a temperature of 41.1 °C and a pressure of 30 bar. |
| first_indexed | 2024-03-09T13:11:25Z |
| format | Article |
| id | doaj.art-3ad3e607366549108c052d44ccbd030e |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T13:11:25Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3ad3e607366549108c052d44ccbd030e2023-11-30T21:41:02ZengMDPI AGMolecules1420-30492022-03-01276177910.3390/molecules27061779Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM)Fatin Nor Arissa Azhar0Mohd Faisal Taha1Siti Musliha Mat Ghani2Muhammad Syafiq Hazwan Ruslan3Noor Mona Md Yunus4Fundamental and Applied Science Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaFundamental and Applied Science Department, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaCentre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaSchool of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, MalaysiaCentre of Research in Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar 32610, MalaysiaThis paper investigated the solubility of carbon dioxide (CO<sub>2</sub>) in an aqueous solution of monoethanolamine (MEA) and 1-butyl-3-methylimidazolium dibutylphosphate ((BMIM)(DBP)) ionic liquid (IL) hybrid solvents. Aqueous solutions of MEA-(BMIM)(DBP) hybrid solvents containing different concentrations of (BMIM)(DBP) were prepared to exploit the amine’s reactive nature, combined with the IL’s non-volatile nature for CO<sub>2</sub> absorption. Response surface methodology (RSM) based on central composite design (CCD) was used to design the CO<sub>2</sub> solubility experiments and to investigate the effects of three independent factors on the solubility of CO<sub>2</sub> in the aqueous MEA-(BMIM)(DBP) hybrid solvent. The three independent factors were the concentration of (BMIM)(DBP) (0–20 wt.%), temperature (30 °C–60 °C) and pressure of CO<sub>2</sub> (2–30 bar). The experimental data were fitted to a quadratic model with a coefficient of determination (<i>R</i><sup>2</sup>) value of 0.9791. The accuracy of the developed model was confirmed through additional experiments where the experimental values were found to be within the 95% confidence interval. From the RSM-generated model, the optimum conditions for CO<sub>2</sub> absorption in aqueous 30 wt% MEA-(BMIM)(DBP) were 20 wt% of (BMIM)(DBP), a temperature of 41.1 °C and a pressure of 30 bar.https://www.mdpi.com/1420-3049/27/6/1779carbon dioxideionic liquidabsorption |
| spellingShingle | Fatin Nor Arissa Azhar Mohd Faisal Taha Siti Musliha Mat Ghani Muhammad Syafiq Hazwan Ruslan Noor Mona Md Yunus Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) Molecules carbon dioxide ionic liquid absorption |
| title | Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) |
| title_full | Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) |
| title_fullStr | Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) |
| title_full_unstemmed | Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) |
| title_short | Experimental and Mathematical Modelling of Factors Influencing Carbon Dioxide Absorption into the Aqueous Solution of Monoethanolamine and 1-Butyl-3-methylimidazolium Dibutylphosphate Using Response Surface Methodology (RSM) |
| title_sort | experimental and mathematical modelling of factors influencing carbon dioxide absorption into the aqueous solution of monoethanolamine and 1 butyl 3 methylimidazolium dibutylphosphate using response surface methodology rsm |
| topic | carbon dioxide ionic liquid absorption |
| url | https://www.mdpi.com/1420-3049/27/6/1779 |
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