Carbon dioxide absorption of aqueous amino acids solutions by using membrane contactors
(2020) ICOM: 12th international congress on membrane and membrane processes — Location: Online (7.December.2020)
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- CO2 emission of the power plants is one of the main contributor to the global warming. [1]. The most extended post combustion CO2 capture technologies rely on absorption columns, which includes a variety of operational problems such as fouling, channelling, high capital costs, etc. Membrane technology has been introduced as an alternative to the conventional technology [2], [3]. However, amine-based systems have high energy requirements for solvent regeneration and large solvent losses due to amine vaporization [5],[6]. For this reason, the use of novel absorption solvents has been proposed in membrane contactors. For example, solvents with similar functionality as amines, such as amino acid salts (AAS) [7] [8] are positively characterized by their high surface tension and non-volatility, and their kinetics is defined by zwitterion reaction [9],[10] In this work, five different amino acids have been studied for CO2 capture. The feasibility of CO2 capture is studied in the membrane contactor using the amino acid salts solutions as the solvent, activated with NaOH. The process performance using the amino acids was compared to that using only NaOH in solution.
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Sang Sefidi, V., Winand, I., & Luis Alconero, P. (2020). Carbon dioxide absorption of aqueous amino acids solutions by using membrane contactors. ICOM: 12th international congress on membrane and membrane processes, Online. https://hdl.handle.net/2078.5/109462