Adsorption of palladium from chloride aqueous solution using silica alginate nanomaterial.

The adsorption characteristics of palladium from chloride aqueous solution onto the silica alginate (SA-Si) nanomaterial have been investigated. The prepared nanomaterial (SA-Si) was characterized by various advanced techniques that ensured a successful preparation process. Different adsorption parameters including the solution pH, shaking time, palladium ion concentration, adsorbent dosage, and temperature were investigated. The experimental results showed that the pseudo-first-order model provided the best fitting for the palladium ions adsorption, and the time required to reach equilibrium was 90.0 min. The adsorption isotherm result from palladium was well described by the Langmuir isotherm model and the maximum adsorption capacity of (SA-Si) nanomaterial was estimated as 12.50 mg/g for Pd(II). Moreover, the thermodynamic results demonstrated that Pd(II) sorption onto (SA-Si) nanomaterial was endothermic and spontaneous. Additionally, the SA-Si nanomaterial can be used as an effective adsorbent for the sorption of Pd(II) from various metal ions present in fission products.

Informations de copyright

Copyright © 2023 Elsevier B.V. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.