SO 2 sorption properties of fly ash zeolites

Natalia Czuma; Wojciech Franus; Paweł Baran; Ćwik Agnieszka; Katarzyna ZarĘbska

doi:10.3906/kim-1905-50

SO ₂ sorption properties of fly ash zeolites

Turk J Chem. 2020 Feb 11;44(1):155-167. doi: 10.3906/kim-1905-50. eCollection 2020.

Authors

Natalia Czuma¹, Wojciech Franus², Paweł Baran¹, Ćwik Agnieszka^{1

3

4}, Katarzyna ZarĘbska¹

Affiliations

¹ Department of Coal Chemistry and Environmental Sciences, Faculty of Energy and Fuels, AGH University of Science and Technology, Kraków Poland.
² Department of Geotechnical Science, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Lublin Poland.
³ Institute of Energy Technologies, Polytechnic University of Catalonia (UPC), Barcelona Spain.
⁴ Barcelona Research Center in Multiscale Science and Engineering, Barcelona Spain.

Abstract

In the presented study, the sulfur dioxide sorption properties of fly ash zeolite X were investigated. Sorption tests were performed on fly ash zeolite samples that were not prepared specially for sorption, in addition to dried samples and samples in the presence of water vapor. The samples saturated with water vapor showed the highest sorption capacity. The sorption capacity of the samples additionally dried prior to the sorption experiment was higher than that of the samples that were not specially prepared for the sorption test. Regeneration tests indicated relatively good regeneration properties. The obtained results were described with the use of Langmuir, Sips, and Dubinin-Astakhov models, with the Dubinin-Astakhov model providing the best fit.

Keywords: SO 2 sorption; fly ash; water vapor; zeolite.