Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants
This study investigates the performance of monoethanolamine (MEA) and diethanolamine (DEA) in capturing carbon dioxide (CO₂) from the exhaust gas of biogas-fueled engine-generator systems, using water and methanol as solvents in a pilot-scale absorption–desorption process. DEA in methanol exhibited...
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025017487 |
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| author | Weerawat Patthaveekongka Sasiphan Deenan Kuntima Krekkeitsakul Parinya Thongyindee Chinnathan Areeprasert Chootrakul Siripaiboon Rujira Jitrwung |
| author_facet | Weerawat Patthaveekongka Sasiphan Deenan Kuntima Krekkeitsakul Parinya Thongyindee Chinnathan Areeprasert Chootrakul Siripaiboon Rujira Jitrwung |
| author_sort | Weerawat Patthaveekongka |
| collection | DOAJ |
| description | This study investigates the performance of monoethanolamine (MEA) and diethanolamine (DEA) in capturing carbon dioxide (CO₂) from the exhaust gas of biogas-fueled engine-generator systems, using water and methanol as solvents in a pilot-scale absorption–desorption process. DEA in methanol exhibited superior separation efficiency and lower energy consumption compared to aqueous systems. Notably, recovered waste methanol from previous methanol distillation showed comparable performance to commercial-grade methanol, demonstrating its potential as a sustainable and cost-effective solvent. The CO₂ concentration in the desorbed gas reached 98.00 % for DEA in water, 97.75 % in commercial methanol, and 95.27 % in waste methanol. Total energy consumption ranged from 14.55 to 15.56 MJ/kg CO₂ captured. Process optimization operating absorption at 30 °C and desorption at 80 °C using a cooling tower in place of a chiller successfully reduced energy use to 11.46 MJ/kg CO₂. Real exhaust gas containing sulfur oxides (SOₓ), nitrogen oxides (NOₓ), and carbon monoxide (CO), at elevated temperatures post-combustion, was first cooled via a shell-and-tube heat exchanger and dehumidified using an adsorption dryer prior to CO₂ capture. A 24-hour continuous operation test confirmed the system's stability. These results support the implementation of methanol-based DEA absorption systems for efficient CO₂ capture, offering integration potential with biomethanol production and contributing to low-carbon energy systems and circular economy initiatives. The corresponding CO₂ removal efficiencies were 95.36 % for commercial methanol and 88.90 % for waste methanol, confirming the high effectiveness of DEA regeneration under mild-temperature conditions. |
| format | Article |
| id | doaj-art-2b3769309df2489fb5fb0b902ada22a6 |
| institution | OA Journals |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-2b3769309df2489fb5fb0b902ada22a62025-08-20T02:06:47ZengElsevierResults in Engineering2590-12302025-09-012710567710.1016/j.rineng.2025.105677Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plantsWeerawat Patthaveekongka0Sasiphan Deenan1Kuntima Krekkeitsakul2Parinya Thongyindee3Chinnathan Areeprasert4Chootrakul Siripaiboon5Rujira Jitrwung6Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Sanam Chandra Pahelace Campus, Muang, Nakhon Pathom 73000, Thailand; Corresponding author.Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Sanam Chandra Pahelace Campus, Muang, Nakhon Pathom 73000, ThailandExpert Center of Innovative Clean Energy and Environment Thailand Institute of Scientific and Technological Research (TISTR), Khlong ha, Khlong Luang, Pathum Thani 12120, ThailandExpert Center of Innovative Clean Energy and Environment Thailand Institute of Scientific and Technological Research (TISTR), Khlong ha, Khlong Luang, Pathum Thani 12120, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, Bangkok 10900, ThailandDepartment of Industrial Technology, School of Science and Technology, Sukhothai Thammathirat Open University, Nonthaburi 11120, ThailandResearch and Development Group for Sustainable Development, Thailand Institute of Scientific and Technological Research (TISTR), Khlong ha, Khlong Luang, Pathum Thani 12120, ThailandThis study investigates the performance of monoethanolamine (MEA) and diethanolamine (DEA) in capturing carbon dioxide (CO₂) from the exhaust gas of biogas-fueled engine-generator systems, using water and methanol as solvents in a pilot-scale absorption–desorption process. DEA in methanol exhibited superior separation efficiency and lower energy consumption compared to aqueous systems. Notably, recovered waste methanol from previous methanol distillation showed comparable performance to commercial-grade methanol, demonstrating its potential as a sustainable and cost-effective solvent. The CO₂ concentration in the desorbed gas reached 98.00 % for DEA in water, 97.75 % in commercial methanol, and 95.27 % in waste methanol. Total energy consumption ranged from 14.55 to 15.56 MJ/kg CO₂ captured. Process optimization operating absorption at 30 °C and desorption at 80 °C using a cooling tower in place of a chiller successfully reduced energy use to 11.46 MJ/kg CO₂. Real exhaust gas containing sulfur oxides (SOₓ), nitrogen oxides (NOₓ), and carbon monoxide (CO), at elevated temperatures post-combustion, was first cooled via a shell-and-tube heat exchanger and dehumidified using an adsorption dryer prior to CO₂ capture. A 24-hour continuous operation test confirmed the system's stability. These results support the implementation of methanol-based DEA absorption systems for efficient CO₂ capture, offering integration potential with biomethanol production and contributing to low-carbon energy systems and circular economy initiatives. The corresponding CO₂ removal efficiencies were 95.36 % for commercial methanol and 88.90 % for waste methanol, confirming the high effectiveness of DEA regeneration under mild-temperature conditions.http://www.sciencedirect.com/science/article/pii/S2590123025017487Co₂ captureBiogas engine flue gasMethanol-based amine absorptionEnergy efficiencyCircular economy |
| spellingShingle | Weerawat Patthaveekongka Sasiphan Deenan Kuntima Krekkeitsakul Parinya Thongyindee Chinnathan Areeprasert Chootrakul Siripaiboon Rujira Jitrwung Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants Results in Engineering Co₂ capture Biogas engine flue gas Methanol-based amine absorption Energy efficiency Circular economy |
| title | Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants |
| title_full | Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants |
| title_fullStr | Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants |
| title_full_unstemmed | Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants |
| title_short | Integration of amine-based CO2 capture with bio-methanol synthesis using waste methanol solvent: Toward energy-efficient and circular carbon solutions for biogas-fueled power plants |
| title_sort | integration of amine based co2 capture with bio methanol synthesis using waste methanol solvent toward energy efficient and circular carbon solutions for biogas fueled power plants |
| topic | Co₂ capture Biogas engine flue gas Methanol-based amine absorption Energy efficiency Circular economy |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025017487 |
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