Resumo

SANABRIA CHOQUE, Rilda Paulina et al. Desarrollo de un método de regeneración de una zeolita empleada en procesos de adsorción por oscilación de presión (PSA) para concentrar oxígeno del aire. Rev. Bol. Quim [online]. 2025, vol.42, n.1, pp.1-15. ISSN 0250-5460.  https://doi.org/10.34098/2078-3949.42.1.1.

Development of a regeneration method for a zeolite used in pressure swing adsorption (PSA) processes to concentrate oxygen from the air.A discarded sample of a commercial adsorbent (ZD) used in an oxygen concentration process was collected for its regeneration by the following methods: i) pressure swing desorption (PSA), ii) combining heat and vacuum desorption (TSA-VSA), iii) inert gas heat application by temperature and pressure swing (TSA-PSA) and iv) sodium (Na+) for lithium (Li+) ion exchange followed by regeneration of the material using the TSA-PSA. The sample was chemically and structurally characterized by the XRD, SEM, EDS, and BET techniques. The results indicate that the sample (ZD) is a zeolite X and that its main structure remains intact. The regeneration process of the sample reached an efficiency of up to 75% by the method iv) suggesting that this material could be reusable in its original application.

Palavras-chave : Adsorption; Regeneration; Zeolite; PSA Process.

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