Adsorption properties of fly ash–clay composites from Central European localities: Case study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929069" target="_blank" >RIV/60461373:22310/24:43929069 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0169131724001431" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169131724001431</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2024.107395" target="_blank" >10.1016/j.clay.2024.107395</a>

Result language
angličtina
Original language name
Adsorption properties of fly ash–clay composites from Central European localities: Case study
Original language description
In this study, composite adsorbents were prepared as mixtures of aluminosilicates from Central European deposits (clinoptilolite and bentonite) and two types of fly ash from Czech operations that differed in fuel type and combustion temperature. The composites were tested for the adsorption of individual toxic cations (cadmium (Cd2+) and caesium (Cs+)) and anions (arsenate (AsO43−) and chromate (CrO42−)) and for cation–anion co-adsorption in appropriate model solutions under laboratory conditions. The clay–fly ash combinations were more selective for cation adsorption, with an efficiency of about 80% or higher, and unsuitable for anion adsorption, with a maximum efficiency of 30% for AsO43− and <20% for CrO42−. In the co-adsorption systems, the co-adsorption of all tested ions was more efficient than the adsorption of individual ions—by >20%, on average, for Cd2+, Cs+ and AsO43− and by about 6% for Cr. Because the composite sorbents combined the properties of both components, they exhibited variability in active adsorption sites for effective cation and anion binding. The co-adsorption efficiency was up to 50% higher than that of the adsorption of any single kind of ion. © 2024 Elsevier B.V.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project
<a href="/en/project/TH79020001" target="_blank" >TH79020001: UTILIZATION OF ALUMINIUM BEARING RAW MATERIALS FOR THE PRODUCTION OF ALUMINIUM METAL, OTHER METALS AND COMPOUNDS</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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