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CO2 capture on natural zeolite clinoptilolite: Effect of temperature and role of the adsorption sites

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CO2 capture on natural zeolite clinoptilolite: Effect of

temperature and role of the adsorption sites

Authors

E Davarpanah, M Armandi, S Hernández, D Fino, R Arletti, S Bensaid, M Piumetti

Publication date

2020/12/1

Journal

Journal of Environmental Management

Volume 275 Pages 111229 Publisher Academic Press Description

In this study, the adsorption capacity of the low-cost zeolite clinoptilolite was investigated for capturing carbon dioxide (CO2) emitted from industrial processes at moderate temperature.

The CO2 adsorption capacity of clinoptilolite (a commercial natural zeolite) and ion-exchanged

(with Na+ and Ca2+) clinoptilolite were tested under both dynamic (using a fixed-bed reactor

operating with 10% vol. CO2 in N2) and equilibrium conditions (measuring single component

adsorption isotherms). The dynamic CO2 adsorption capacity of bare clinoptilolite and

ion-exchanged clinoptilolite were evaluated in the temperature range from 293 K to 338 K and the obtained breakthrough curves were compared with those of the commercial zeolite 13X (Z13X). Although the adsorption capacity of Z13X exceeded those of bare clinoptilolite and ion-exchanged clinoptilolite at

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