Preparation and Characterization of Hydroxyapatite-Modified Natural Zeolite: Application as Adsorbent for Ni2+ and Cr3+ Ion Removal from Aqueous Solutions DOI Open Access
Katarina Sokić, Jelena Dikić, Djordje Veljović

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 818 - 818

Published: March 11, 2025

Natural zeolites (NatZ) are widely available, porous, crystalline aluminosilicate minerals that commonly used as cost-effective adsorbents in water treatment processes. Despite their efficiency removing various heavy metal ions from wastewater, NatZ show relatively low affinity toward Ni2+ and Cr3+ ions. This study aimed to develop composite based on hydroxyapatite using two methods, hydrothermal mechanochemical, adsorption properties for the removal of aqueous solutions were investigated. X-ray powder diffraction scanning electron microscopy analyses confirmed under conditions, needle-like crystals formed surface NatZ, while zeolite structure remained unchanged. Compared mechanochemically prepared sample, this adsorbent showed higher efficiency, binding 6.91 mg Ni2+/g 16.95 Cr3+/g. Adsorption kinetics tested cations both cases can be described by a pseudo-second-order model (R2 is than 0.95 all adsorbents). It concluded presence significantly improves performance demonstrating its potential wastewater treatment.

Language: Английский

Preparation and Characterization of Hydroxyapatite-Modified Natural Zeolite: Application as Adsorbent for Ni2+ and Cr3+ Ion Removal from Aqueous Solutions DOI Open Access
Katarina Sokić, Jelena Dikić, Djordje Veljović

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 818 - 818

Published: March 11, 2025

Natural zeolites (NatZ) are widely available, porous, crystalline aluminosilicate minerals that commonly used as cost-effective adsorbents in water treatment processes. Despite their efficiency removing various heavy metal ions from wastewater, NatZ show relatively low affinity toward Ni2+ and Cr3+ ions. This study aimed to develop composite based on hydroxyapatite using two methods, hydrothermal mechanochemical, adsorption properties for the removal of aqueous solutions were investigated. X-ray powder diffraction scanning electron microscopy analyses confirmed under conditions, needle-like crystals formed surface NatZ, while zeolite structure remained unchanged. Compared mechanochemically prepared sample, this adsorbent showed higher efficiency, binding 6.91 mg Ni2+/g 16.95 Cr3+/g. Adsorption kinetics tested cations both cases can be described by a pseudo-second-order model (R2 is than 0.95 all adsorbents). It concluded presence significantly improves performance demonstrating its potential wastewater treatment.

Language: Английский

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