<abstract xmlns="http://www.w3.org/1999/xhtml">

Fly ashes as a residue from combustion processes of coal in coal-fired power stations can be applied for zeolite formation. The zeolite synthesis has considerable effect on their structure following further catalytic use. The formation of analcime is guided by the operation of the silicate framework in the company of Na+, [Al(OH)4]−, [H2SiO4]2− species, coming from fly ash processing. Here, we have highlighted the importance of conducting the coal fly ash waste management towards monomineralic zeolite synthesis, in the form of powder analcime. It is the first report on powder analcime production without fly ash residues, confirmed by SEM and XRD analysis. The obtained analcime-zeolite was further explored as biodiesel catalyst based on base-catalyzed transesterification process. The effect of analcime catalyst usage on the biodiesel yield was determined with observed 97.2 % conversion efficiency under the concentration of 4%wt at 230 °C, with three times reusable analcime catalysts. Coal fly ash-derived monominerals on a large scale can significantly contribute to the sustainability goals and efficient waste management.
</abstract>

Fly ashes as a residue from combustion processes of coal in coal-fired power stations can be applied for zeolite formation. The zeolite synthesis has considerable effect on their structure following further catalytic use. The formation of analcime is guided by the operation of the silicate framework in the company of Na+, [Al(OH)4]−, [H2SiO4]2− species, coming from fly ash processing. Here, we have highlighted the importance of conducting the coal fly ash waste management towards monomineralic zeolite synthesis, in the form of powder analcime. It is the first report on powder analcime production without fly ash residues, confirmed by SEM and XRD analysis. The obtained analcime-zeolite was further explored as biodiesel catalyst based on base-catalyzed transesterification process. The effect of analcime catalyst usage on the biodiesel yield was determined with observed 97.2 % conversion efficiency under the concentration of 4%wt at 230 °C, with three times reusable analcime catalysts. Coal fly ash-derived monominerals on a large scale can significantly contribute to the sustainability goals and efficient waste management.

Hydrothermal Conversion of Fly Ash into Monomineralic Zeolite Synthesis for Biodiesel Production

Faculty of Civil Engineering and Architecture, Department of Construction Materials Engineering and Geoengineering

Environmental and Climate Technologies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Fly ashes as a residue from combustion processes of coal in coal-fired power stations can be applied for zeolite formation. The zeolite synthesis has...

Hydrothermal Conversion of Fly Ash into Monomineralic Zeolite Synthesis for Biodiesel Production

Published Online: Mar 02, 2024

Page range: 94 - 106

Received: Jun 02, 2023

Accepted: Jan 23, 2024

DOI: https://doi.org/10.2478/rtuect-2024-0009

Keywords
Analcime, biodiesel, fly ash management, powder aggregates, monominerals, powder zeolite

© 2024 Maria K. Kochaniec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Hydrothermal Conversion of Fly Ash into Monomineralic Zeolite Synthesis for Biodiesel Production

Published Online: Mar 02, 2024

Page range: 94 - 106

Received: Jun 02, 2023

Accepted: Jan 23, 2024

DOI: https://doi.org/10.2478/rtuect-2024-0009

KeywordsAnalcime, biodiesel, fly ash management, powder aggregates, monominerals, powder zeolite

© 2024 Maria K. Kochaniec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Analcime, biodiesel, fly ash management, powder aggregates, monominerals, powder zeolite