CO₂ Absorption in a 5M Aqueous Solution of 2-(Diethylamino)Ethanol

Abstract:

Currently, climate change and global warming are the main issues on environmental concern due to the higher amount of carbon dioxide in the atmosphere. The main sources of carbon dioxide are energy-related activities such as power generation. Now, the effective technology to remove CO₂ from these sources is absorption especially with amine solution. The commercially used amine solutions are monoethanolamine (MEA) and methyldiethanolamine (MDEA). Nevertheless, they also have disadvantages such as low capacity, corrosion and high energy requirement. Therefore, many new solvents have been developed to improve efficiency for CO₂ capture. Therefore, the objective of this work is to measure the vapor-liquid equilibrium of CO₂ in a 5M aqueous solution of 2-(Diethylamino) ethanol (DEAE) as a novel solution at the temperature from 30 °C to 80 °C and CO₂ partial pressures ranging from 5 to 100 kPa. The solubility results of CO₂ in DEAE solution are compared with those of aqueous solution of MEA. For cyclic capacity, the results present that DEAE provides higher performance which is up to 861% higher than that of MEA. This means that DEAE can save more energy and cost for solution regeneration.

• Periodical: Applied Mechanics and Materials (Volume 660)
• Pages: 381-385
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.660.381
• Online since: October 2014
• Authors: Kreangkrai Maneeintr*, Pattara Boonpipattanapong, Suttichai Assabumrungrat, Tawatchai Charinpanitkul
• Keywords: Absorption, Amine Solution, Carbon Dioxide, Flue Gas, Solubility

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