The present invention relates to Gas-liquid absorption in microchannel and generally the process of gas absorption in aqueous solution of amino acid salts within microchannel. The invention particularly relates to absorption of gases such as carbon dioxide, carbon monoxide, sulphur dioxide, hydrogen sulphide or flue gases in amino acids solution, amine solution or combination(s) thereof. The process and device is useful in prevention and control of emission of undesired gases in the environment. Moreover, it can have industrial applications in automobiles, petroleum industries, specialised chemical production reactors, space technology, biomedical and lab on the chip devices.
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