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Kinetic and Thermodynamic Analysis of High-Pressure CO2 Capture Using Ethylenediamine: Experimental Study and Modeling. ENERGIES 2021. [DOI: 10.3390/en14206822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
One of the alternatives to reduce CO2 emissions from industrial sources (mainly the oil and gas industry) is CO2 capture. Absorption with chemical solvents (alkanolamines in aqueous solutions) is the most widely used conventional technology for CO2 capture. Despite the competitive advantages of chemical solvents, the technological challenge in improving the absorption process is to apply alternative solvents, reducing energy demand and increasing the CO2 captured per unit of solvent mass. This work presents an experimental study related to the kinetic and thermodynamic analysis of high-pressure CO2 capture using ethylenediamine (EDA) as a chemical solvent. EDA has two amine groups that can increase the CO2 capture capacity per unit of solvent. A non-stirred experimental setup was installed and commissioned for CO2 capture testing. Tests of the solubility of CO2 in water were carried out to validate the experimental setup. CO2 capture testing was accomplished using EDA in aqueous solutions (0, 5, 10, and 20 wt.% in amine). Finally, a kinetic model involving two steps was proposed, including a rapid absorption step and a slow diffusion step. EDA accelerated the CO2 capture performance. Sudden temperature increases were observed during the initial minutes. The CO2 capture was triggered after the absorption of a minimal amount of CO2 (~10 mmol) into the liquid solutions, and could correspond to the “lean amine acid gas loading” in a typical sweetening process using alkanolamines. At equilibrium, there was a linear relationship between the CO2 loading and the EDA concentration. The CO2 capture behavior obtained adapts accurately (AAD < 1%) to the kinetic mechanism.
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Pollet P, Samanta S, Apkarian RP, Gelbaum L, Leisen J, Kitchens CL, Griffith K, Richman K, Eckert CA, Liotta CL. CO 2 Promoted Gel Formation of Hydrazine, Monomethylhydrazine, and Ethylenediamine: Structures and Properties. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pamela Pollet
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Susnata Samanta
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Robert P. Apkarian
- Integrated Microscopy & Microanalytical Facility, Emory University, Atlanta, Georgia 30322, United States
| | - Leslie Gelbaum
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Johannes Leisen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Christopher L. Kitchens
- School of Chemical and Biomolecular Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Kris Griffith
- American Pacific Corporation, Cedar City, Utah 84721, United States
| | - Kent Richman
- American Pacific Corporation, Cedar City, Utah 84721, United States
| | - Charles A. Eckert
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Charles L. Liotta
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Wang J, Qian P, Hu K, Zha Z, Wang Z. Electrocatalytic Fixation of Carbon Dioxide with Amines and Arylketones. ChemElectroChem 2019. [DOI: 10.1002/celc.201801724] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiawei Wang
- Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials ScienceUniversity of Science and Technology of China Hefei Anhui China
| | - Peng Qian
- Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials ScienceUniversity of Science and Technology of China Hefei Anhui China
| | - Kangfei Hu
- Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials ScienceUniversity of Science and Technology of China Hefei Anhui China
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials ScienceUniversity of Science and Technology of China Hefei Anhui China
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials ScienceUniversity of Science and Technology of China Hefei Anhui China
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