Synergistic effects of amino acids in clathrates hydrates: Gas capture and storage applications

Autor: Pinnelli S.R. Prasad, Burla Sai Kiran
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Chemical Engineering Journal Advances, Vol 3, Iss , Pp 100022- (2020)
Druh dokumentu: article
ISSN: 2666-8211
DOI: 10.1016/j.ceja.2020.100022
Popis: This study reports enhanced carbon dioxide capture and storage, using gas hydrate-based technology, in the presence of low-dose (0.5 wt%) amino acids (AAs). The aqueous solutions, with l-methionine (l-met) and l-phenylalanine (l-phe), showed higher affinity in CH4 hydrate formation. However, the affinity for CO2 hydrates is high in l-met and very low in l-phe systems. Further, the hydrate conversion is high in the l-met solution in CO2+CH4 gas mixtures. However, it decreased dramatically in l-phe solutions, incredibly if the feed gas rich in CO2 (> 75 mol%). Higher hydrate conversion (~ 4–6 times) for CO2 and CO2+CH4 is observed upon using mixed AA aqueous solutions. Faster and efficient conversion is a consequence of the cooperative effects.
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