Optimized cesium and potassium ion-exchanged zeolites A and X granules for biogas upgrading.

ABSTRACT: Partially ion-exchanged zeolites A and X binderless granules were evaluated for CO₂ separation from CH₄. The CO₂ adsorption capacity and CO₂-over-CH₄ selectivity of binderless zeolites A and X granules were optimized by partial exchange of cations with K⁺ and Cs⁺, while retaining the mechanical strength of 1.3 MPa and 2 MPa, respectively. Single gas CO₂ and CH₄ adsorption isotherms were recorded on zeolites A and X granules and used to estimate the co-adsorption of CO₂-CH₄ using ideal adsorbed solution theory (IAST). The IAST co-adsorption analysis showed that the partially ion-exchanged binderless zeolites A and X granules had a high CO₂-over-CH₄ s

SUBMITTER: Narang K 

PROVIDER: S-EPMC9089246 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature