Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers
The main goal of this work was to evaluate the possibilities of solidifying fly ashes contaminated with 137Cs into geopolymer waste forms. In the first step, physico-chemical characterization of fly ash originating from the thermal power plant in Vojany (Slovak Republic) was carried out. Before the...
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Warsaw University of Life Sciences
2025-03-01
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| Series: | Przegląd Naukowy Inżynieria i Kształtowanie Środowiska |
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| Online Access: | https://srees.sggw.edu.pl/article/view/10058 |
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| author | Šimon Rezbárik Lenka Vavrincová Martin Valica Vanda Adamcová Stanislav Sekely Ján Rezbárik Miroslav Horník |
| author_facet | Šimon Rezbárik Lenka Vavrincová Martin Valica Vanda Adamcová Stanislav Sekely Ján Rezbárik Miroslav Horník |
| author_sort | Šimon Rezbárik |
| collection | DOAJ |
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The main goal of this work was to evaluate the possibilities of solidifying fly ashes contaminated with 137Cs into geopolymer waste forms. In the first step, physico-chemical characterization of fly ash originating from the thermal power plant in Vojany (Slovak Republic) was carried out. Before the preparation of the geopolymer waste forms (ternary mixture Geocem, GEOFIX, s.r.o., Slovak Republic) containing fly ash at percentage weight proportions of 5%, 10%, 20%, and 40%, the fly ash was artificially contaminated with a 137CsCl solution. The 137Cs activity was measured by scintillation gamma-spectrometry. The leachability test conducted according to the American National Standard ANSI/ANS-16.1-1986 over five days showed that the geopolymer waste forms with fly ash contents of 5%, 10% and 20% met the required leachability index limits with values more than 6. The compressive strength test also confirmed that the samples with 40% ash content did not meet the required 5 MPa limit for their disposal as a radioactive waste.
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| format | Article |
| id | doaj-art-ee6ceeb4e7604e20be65e906cd33202a |
| institution | DOAJ |
| issn | 1732-9353 2543-7496 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Warsaw University of Life Sciences |
| record_format | Article |
| series | Przegląd Naukowy Inżynieria i Kształtowanie Środowiska |
| spelling | doaj-art-ee6ceeb4e7604e20be65e906cd33202a2025-08-20T02:49:56ZengWarsaw University of Life SciencesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska1732-93532543-74962025-03-0134110.22630/srees.10058Solidification/stabilization of fly ash contaminated with radiocesium into geopolymersŠimon Rezbárik0Lenka Vavrincová1Martin Valica2Vanda Adamcová3Stanislav Sekely4Ján Rezbárik5Miroslav Horník6University of Ss. Cyril and Methodius in Trnava, Faculty of Natural Sciences, Institute of Chemistry and Environmental Sciences, the Slovak Republic; GEOFIX, s.r.o., the Slovak RepublicUniversity of Ss. Cyril and Methodius in Trnava, Faculty of Natural Sciences, Institute of Chemistry and Environmental Sciences, the Slovak RepublicUniversity of Ss. Cyril and Methodius in Trnava, Faculty of Natural Sciences, Institute of Chemistry and Environmental Sciences, the Slovak RepublicUniversity of Ss. Cyril and Methodius in Trnava, Faculty of Natural Sciences, Institute of Chemistry and Environmental Sciences, the Slovak RepublicGEOFIX Ltd., Starohájska 9/C, Trnava, SK-917 01, Slovak RepublicGEOFIX, s.r.o., the Slovak RepublicUniversity of Ss. Cyril and Methodius in Trnava, Faculty of Natural Sciences, Institute of Chemistry and Environmental Sciences, the Slovak Republic The main goal of this work was to evaluate the possibilities of solidifying fly ashes contaminated with 137Cs into geopolymer waste forms. In the first step, physico-chemical characterization of fly ash originating from the thermal power plant in Vojany (Slovak Republic) was carried out. Before the preparation of the geopolymer waste forms (ternary mixture Geocem, GEOFIX, s.r.o., Slovak Republic) containing fly ash at percentage weight proportions of 5%, 10%, 20%, and 40%, the fly ash was artificially contaminated with a 137CsCl solution. The 137Cs activity was measured by scintillation gamma-spectrometry. The leachability test conducted according to the American National Standard ANSI/ANS-16.1-1986 over five days showed that the geopolymer waste forms with fly ash contents of 5%, 10% and 20% met the required leachability index limits with values more than 6. The compressive strength test also confirmed that the samples with 40% ash content did not meet the required 5 MPa limit for their disposal as a radioactive waste. https://srees.sggw.edu.pl/article/view/10058fly ashgeopolymerssolidification/stabilization137Csleachabilitycompressive strength |
| spellingShingle | Šimon Rezbárik Lenka Vavrincová Martin Valica Vanda Adamcová Stanislav Sekely Ján Rezbárik Miroslav Horník Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers Przegląd Naukowy Inżynieria i Kształtowanie Środowiska fly ash geopolymers solidification/stabilization 137Cs leachability compressive strength |
| title | Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers |
| title_full | Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers |
| title_fullStr | Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers |
| title_full_unstemmed | Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers |
| title_short | Solidification/stabilization of fly ash contaminated with radiocesium into geopolymers |
| title_sort | solidification stabilization of fly ash contaminated with radiocesium into geopolymers |
| topic | fly ash geopolymers solidification/stabilization 137Cs leachability compressive strength |
| url | https://srees.sggw.edu.pl/article/view/10058 |
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