CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions
The increase in atmospheric CO<sub>2</sub> caused by human activities has driven the development of technologies to capture this gas before it reaches the atmosphere. This study analyzed CO<sub>2</sub> sorption using amine-based solvents, such as methyldiethanolamine (MDEA),...
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2025-01-01
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| author | Verónica Calva Nelson Játiva Marvin Ricaurte |
| author_facet | Verónica Calva Nelson Játiva Marvin Ricaurte |
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| description | The increase in atmospheric CO<sub>2</sub> caused by human activities has driven the development of technologies to capture this gas before it reaches the atmosphere. This study analyzed CO<sub>2</sub> sorption using amine-based solvents, such as methyldiethanolamine (MDEA), diethylenetriamine (DETA), triethanolamine (TEA), and monoethanolamine (MEA) in 40 wt.% aqueous solutions, under high-pressure conditions (initial pressure: 500 psia) and room temperature (30 °C), in both non-stirred and stirred systems. Piperazine (PZ), a heterocyclic compound, was tested as an additive to improve the kinetics of the CO<sub>2</sub> sorption process. Kinetic and thermodynamic analyses were conducted to evaluate the efficiency of each amine-based solution in terms of reaction rate and CO<sub>2</sub> loading capacity. MEA and TEA exhibited higher reaction rates, while DETA and MDEA were the most thermodynamically efficient due to the highest CO<sub>2</sub> loading capacity. The PZ kinetic behavior depended on the equipment used; in the non-stirred system, no kinetic effect was observed, while in the stirred system, this effect was appreciable. Additionally, a corrosivity study revealed that MEA, a primary amine, was the most corrosive, whereas TEA, a tertiary amine, was the least corrosive. |
| format | Article |
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| spelling | doaj-art-0b027ec2dbac4ac3b1e22fc7ce45d3a72025-08-20T02:42:32ZengMDPI AGGases2673-56282025-01-0151410.3390/gases5010004CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure ConditionsVerónica Calva0Nelson Játiva1Marvin Ricaurte2Grupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University, Hacienda San José s/n y Proyecto Yachay, Urcuquí 100119, EcuadorGrupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University, Hacienda San José s/n y Proyecto Yachay, Urcuquí 100119, EcuadorGrupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences and Engineering, Yachay Tech University, Hacienda San José s/n y Proyecto Yachay, Urcuquí 100119, EcuadorThe increase in atmospheric CO<sub>2</sub> caused by human activities has driven the development of technologies to capture this gas before it reaches the atmosphere. This study analyzed CO<sub>2</sub> sorption using amine-based solvents, such as methyldiethanolamine (MDEA), diethylenetriamine (DETA), triethanolamine (TEA), and monoethanolamine (MEA) in 40 wt.% aqueous solutions, under high-pressure conditions (initial pressure: 500 psia) and room temperature (30 °C), in both non-stirred and stirred systems. Piperazine (PZ), a heterocyclic compound, was tested as an additive to improve the kinetics of the CO<sub>2</sub> sorption process. Kinetic and thermodynamic analyses were conducted to evaluate the efficiency of each amine-based solution in terms of reaction rate and CO<sub>2</sub> loading capacity. MEA and TEA exhibited higher reaction rates, while DETA and MDEA were the most thermodynamically efficient due to the highest CO<sub>2</sub> loading capacity. The PZ kinetic behavior depended on the equipment used; in the non-stirred system, no kinetic effect was observed, while in the stirred system, this effect was appreciable. Additionally, a corrosivity study revealed that MEA, a primary amine, was the most corrosive, whereas TEA, a tertiary amine, was the least corrosive.https://www.mdpi.com/2673-5628/5/1/4CO<sub>2</sub> captureaminesMDEADETATEAMEA |
| spellingShingle | Verónica Calva Nelson Játiva Marvin Ricaurte CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions Gases CO<sub>2</sub> capture amines MDEA DETA TEA MEA |
| title | CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions |
| title_full | CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions |
| title_fullStr | CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions |
| title_full_unstemmed | CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions |
| title_short | CO<sub>2</sub> Capture Using Amine-Based Solvents: Identification of Additives to Improve the Kinetics and Thermodynamics of CO<sub>2</sub> Sorption at High-Pressure Conditions |
| title_sort | co sub 2 sub capture using amine based solvents identification of additives to improve the kinetics and thermodynamics of co sub 2 sub sorption at high pressure conditions |
| topic | CO<sub>2</sub> capture amines MDEA DETA TEA MEA |
| url | https://www.mdpi.com/2673-5628/5/1/4 |
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