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Article

Progress in the Utilization of Coal Fly Ash by Conversion to Zeolites with Green Energy Applications

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Department of Thermal and Nuclear Power Engineering, Technical University of Sofia, 8 Kl. Ohridsky Blvd, 1000 Sofia, Bulgaria
2
College of Energy and Electronics, Technical University of Sofia, 8 Kl. Ohridsky Blvd, 1000 Sofia, Bulgaria
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Institute of Optical Materials and Technologies ‘‘Acad. J. Malinowski’’, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl.109, 1113 Sofia, Bulgaria
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Institute of Nanostructure Technologies and Analytics (INA), University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
5
Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, bl.9, 1113 Sofia, Bulgaria
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(9), 2014; https://doi.org/10.3390/ma13092014
Received: 20 March 2020 / Revised: 22 April 2020 / Accepted: 22 April 2020 / Published: 25 April 2020
(This article belongs to the Collection Porous Materials and Nanozeolites)
Fly ash (FA) from lignite coal combusted in different Thermal Power Plants (TPPs) was used for the synthesis of zeolites (FAZs) of the Na-X type by alkaline activation via three laboratory procedures. FAZs were characterized with respect to their morphology, phase composition and surface properties, which predetermine their suitability for applications as catalysts and adsorbents. FAZs were subsequently modified with metal oxides (CuO) to improve their catalytic properties. The catalytic activity of non-modified and CuO-modified FAZs in the total oxidation of volatile organic compounds was investigated. FAZs were studied for their potential to retain CO2, as their favorable surface characteristics and the presence of iron oxides make them suitable for carbon capture technologies. Thin films of FAZs were deposited by in situ crystallization, and investigated for their morphology and optical sensitivity when exposed to pollutants in the gas phase, e.g., acetone. This study contributes to the development of novel technological solutions for the smart and valuable utilization of FA in the context of the circular economy and green energy production. View Full-Text
Keywords: fly ash utilization; fly ash zeolites; catalytic oxidation of VOCs; CO2 adsorption; fly ash zeolite films fly ash utilization; fly ash zeolites; catalytic oxidation of VOCs; CO2 adsorption; fly ash zeolite films
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MDPI and ACS Style

Boycheva, S.; Zgureva, D.; Lazarova, K.; Babeva, T.; Popov, C.; Lazarova, H.; Popova, M. Progress in the Utilization of Coal Fly Ash by Conversion to Zeolites with Green Energy Applications. Materials 2020, 13, 2014. https://doi.org/10.3390/ma13092014

AMA Style

Boycheva S, Zgureva D, Lazarova K, Babeva T, Popov C, Lazarova H, Popova M. Progress in the Utilization of Coal Fly Ash by Conversion to Zeolites with Green Energy Applications. Materials. 2020; 13(9):2014. https://doi.org/10.3390/ma13092014

Chicago/Turabian Style

Boycheva, Silviya, Denitza Zgureva, Katerina Lazarova, Tsvetanka Babeva, Cyril Popov, Hristina Lazarova, and Margarita Popova. 2020. "Progress in the Utilization of Coal Fly Ash by Conversion to Zeolites with Green Energy Applications" Materials 13, no. 9: 2014. https://doi.org/10.3390/ma13092014

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