Geopolymer Building Materials Based on Fly Ash in Terms of Removing SO<sub>2</sub>, CO<sub>2</sub>, and Water Vapor
This paper presents the results of sorption tests against selected gaseous pollutants SO<sub>2</sub>, CO<sub>2</sub> and H<sub>2</sub>O on geopolymer materials obtained from high-calcium fly ash from lignite power generation. In the synthesis process, activation o...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/16/13/5188 |
| Summary: | This paper presents the results of sorption tests against selected gaseous pollutants SO<sub>2</sub>, CO<sub>2</sub> and H<sub>2</sub>O on geopolymer materials obtained from high-calcium fly ash from lignite power generation. In the synthesis process, activation of geopolymer materials was carried out using KOH and NaOH. It was found that the activating agent significantly affects the porous structure of the samples. The sorption experiments conducted for the KOH-activated sample showed high SO<sub>2</sub> adsorption efficiency, almost ten times higher than against CO<sub>2</sub>. The results demonstrate the possibility of utilizing fly ash obtained from the lignite energy processing sector for the synthesis of geopolymers with potential application of the materials as functional plastering compounds. |
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| ISSN: | 1996-1073 |