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A novel removal of Ni2+ ions from water solutions using dispersive solid-phase extraction method with nano Fe3O4/chitosan-acrylamide hydrogel

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Abstract

The effluent release containing heavy metals as Ni2+ ions has drastic risks to both the natural environment and human health. In this research, the nano Fe3O4/chitosan-acrylamide hydrogel was prepared as a novel nano sorbent for dispersive solid-phase extraction of Ni2+ ions and applied to the water sample solution. The pH, amount and type of elution solvent, the extraction time, etc. were optimized to improve the efficiency of the proposed method. Analytical parameters such as concentration factor and relative standard deviation (%) were achieved as 33.3 and 1.8%, respectively. The capacity in equilibrium sorption was calculated at 22.54 mg g−1. Furthermore, to estimate the adsorption mode, Freundlich, Langmuir, and Temkin models were fitted with experimental isotherm data. Besides, to check the basic process of the metal adsorption mechanism, pseudo-first-order, pseudo-second-order, and Roginsky-Zeldovich models were investigated and the results were fitted with the pseudo-second-order model. The value of change in entropy (⊿S) obtained is −65.24 (J(mol K)−1). Negative values of change in enthalpy, ⊿H in (kJ mol−1) is −24.45 (kJ mol−1) which indicates both physical and chemical adsorptions involved in the process of adsorption. Finally, the nano Fe3O4/chitosan-acrylamide hydrogel exhibited high performance to remove the Ni2+ ions from water sample solution.

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All of the data and material are owned by the authors and/or no permissions are required. All authors (Morteza Parsayi Arvand, Ali Moghimi, and Narges Salehi) have read, understood, and have complied as applicable with the statement on “Ethical responsibilities of Authors” as found in the Instructions for Authors and are aware that with minor exceptions, no changes can be made to authorship once the paper is submitted.

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Morteza Parsayi Arvand performed the analysis. Ali Moghimi supervised the analyses and he is the corresponding author. Narges Salehi Performed the analysis and wrote the main manuscript text. All authors reviewed the manuscript.

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Correspondence to Ali Moghimi.

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Arvand, M.P., Moghimi, A. & Salehi, N. A novel removal of Ni2+ ions from water solutions using dispersive solid-phase extraction method with nano Fe3O4/chitosan-acrylamide hydrogel. Environ Monit Assess 196, 136 (2024). https://doi.org/10.1007/s10661-023-12149-x

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  • DOI: https://doi.org/10.1007/s10661-023-12149-x

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