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Phosphogypsum and clay mineral/phosphogypsum ceramic composites as useful adsorbents for uranium uptake

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cris.lastimport.scopus2024-02-12T19:33:05Z
dc.abstract.enWe analyzed the sorption capacity of phosphogypsum and clay mineral-based ceramic composites. Phosphogypsum is a waste by-product generated from apatite in the production process of phosphoric acid and phosphate fertilizers. On the one hand, the chemical composition of phosphogypsum poses a considerable problem to production plants due to its acidic properties. On the other hand, phosphogypsum can constitute an excellent sorbent material for cations that prospectively create insoluble phosphoric mineral phases. To examine and study the above issues, a series of ceramic composites with differing phosphogypsum content were prepared and examined to evaluate their uranyl sorption capacity. The isotherms of uranyl adsorption onto the composite surface were determined and kinetic experiments were conducted to determine the sorption properties and kinetic parameters. Experiments were conducted under both static and dynamic conditions. Furthermore, diffraction studies and chemical composition analyses were carried out using a scanning electron microscope with an energy dispersive spectrometry feature. We found that the maximum uranium (VI) adsorption reached nearly 0.09 mol kg−1, which equaled 21 g of uranium adsorbed per 1 kg of phosphogypsum at 298 K. The results indicated efficient uranyl ion chemisorption onto the examined composites. In addition, the occurrence of phases corresponding to the composition of autunite group minerals were observed. The composites have potential application in water treatment technologies and hazardous waste landfills.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSiuda, Rafał
dc.contributor.authorKałaska, Maciej
dc.contributor.authorGąsiński, Arkadiusz
dc.contributor.authorRaczko, Jan
dc.contributor.authorBorkowski, Andrzej
dc.contributor.authorMordak, Katarzyna
dc.contributor.authorGrądziel, Igor
dc.contributor.authorKrzesicka, - Magdalena
dc.contributor.authorSyczewski, Marcin D.
dc.date.accessioned2024-01-25T16:36:15Z
dc.date.available2024-01-25T16:36:15Z
dc.date.issued2020
dc.description.financePublikacja bezkosztowa
dc.identifier.doi10.1016/J.APGEOCHEM.2020.104793
dc.identifier.issn0883-2927
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/115813
dc.identifier.weblinkhttps://www.sciencedirect.com/science/article/abs/pii/S0883292720302857
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofApplied Geochemistry
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titlePhosphogypsum and clay mineral/phosphogypsum ceramic composites as useful adsorbents for uranium uptake
dc.typeJournalArticle
dspace.entity.typePublication