Green sorbents for strontium and uranium adsorption at solid/liquid interfaces: A review
Seimukhanova L. Zhantikeyev U. Bexeitova K. Skwarek E. Lee J. Azat S.
3 March 2026Elsevier B.V.
Separation and Purification Technology
2026#383
The removal of strontium (Sr) and uranium (U) from aqueous systems is critical for managing nuclear waste, mining effluents, and accidental releases. Both radionuclides are highly mobile and toxic; 90Sr is soluble and mimics Ca2+, while U occurs mainly as UO₂2+ and carbonate complexes. In Kazakhstan, legacy contamination from the Semipalatinsk nuclear test site and uranium mining has created severe environmental burdens, underscoring the need for sustainable remediation. Adsorption at solid/liquid interfaces is governed by radionuclide speciation, solution chemistry, and sorbent properties. Green sorbents including biomass derived carbons, clays, and functionalized natural materials enable Sr and U removal via ion exchange, surface complexation, and co-precipitation, offering eco-friendly alternatives to conventional technologies. Recent advances, such as nanoparticle decoration and bioinspired architectures, significantly improve capacity and selectivity. This review summarizes adsorption mechanisms, kinetics, isotherms, and thermodynamics across green sorbents, identifies performance–speciation relationships, and outlines research needs in competitive-ion resistance, regeneration, and field validation, with emphasis on Kazakhstan-relevant contexts.
Adsorption , Green sorbents , Radionuclide , Strontium , Uranium
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Laboratory of Engineering Profile, Satbayev University, 22 Satbayev str., Almaty, 050013, Kazakhstan
Department of Radiochemistry and Environmental, Chemistry Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, Lublin, 20 031, Poland
Department of Global Smart City, School of Civil, Architectural Engineering, and Landscape Architecture, Sungkyunkwan University Suwon, 16419, South Korea
Laboratory of Engineering Profile
Department of Radiochemistry and Environmental
Department of Global Smart City
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026