Nano-hydroxyapatite as an efficient adsorbent for cadmium Removal: Experimental and theoretical insights

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dc.authoridKatin, Konstantin/0000-0003-0225-5712
dc.authoridShekhawat, Anita/0000-0002-4732-4200
dc.contributor.authorBillah, Rachid El Kaim
dc.contributor.authorSimsek, Selcuk
dc.contributor.authorKaya, Savas
dc.contributor.authorKatin, Konstantin
dc.contributor.authorEssenni, Said
dc.contributor.authorJugade, Ravin
dc.contributor.authorShekhawat, Anita
dc.date.accessioned2025-05-04T16:47:08Z
dc.date.available2025-05-04T16:47:08Z
dc.date.issued2025
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractThe presented work aims to investigate the cadmium adsorption on nano-crystalline hydroxyapatite (n-Hap). X ray diffraction (XRD), Fourier transform infra-red (FTIR), Scanning electron microscope (SEM), and Thermogravimetric analysis (TGA) techniques were applied to characterize the n-Hap. Adsorbent mass, pH value, and initial Cd2+concentration were varied to optimize the adsorption conditions. The best Langmuir adsorption isotherm provided equilibrium adsorption capacity of 52.79 mg/g. According to performed kinetic study, the surface reaction fits to the pseudo-second order model. Thermodynamic parameters of the adsorption (Delta G degrees, Delta H degrees and Delta S degrees ) were derived from the temperature dependence of the adsorption rates. We observed spontaneous endothermic chemisorption of Cd2+ ions. Density functional theory calculations confirmed the spontaneous chemisorption via formation of three Cd-O covalent bonds of about 2.1 & Aring; lengths.
dc.description.sponsorshipSivas Cumhuriyet Uni-versity Scientific Research Projects Commission
dc.description.sponsorshipThe present study was partly supported by Sivas Cumhuriyet Uni-versity Scientific Research Projects Commission. The authors have declared no conflict of interest.
dc.identifier.doi10.1016/j.molstruc.2024.140712
dc.identifier.issn0022-2860
dc.identifier.issn1872-8014
dc.identifier.scopus2-s2.0-85211017020
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.molstruc.2024.140712
dc.identifier.urihttps://hdl.handle.net/20.500.12418/35488
dc.identifier.volume1325
dc.identifier.wosWOS:001409284800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Molecular Structure
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250504
dc.subjectKinetics
dc.subjectThermodynamic
dc.subjectCd2+removal
dc.subjectHydroxyapatite
dc.subjectDFT
dc.titleNano-hydroxyapatite as an efficient adsorbent for cadmium Removal: Experimental and theoretical insights
dc.typeArticle

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