首页|Iron- and Zirconium-Modified Nanocellulose Adsorbent: Broad-Range Selectivity Test for Potentially Toxic Elements and Effective Arsenite Removal

Iron- and Zirconium-Modified Nanocellulose Adsorbent: Broad-Range Selectivity Test for Potentially Toxic Elements and Effective Arsenite Removal

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Iron oxide and its composite adsorbents are widely used for removing arsenic and other potentially toxic elements (PTEs) due to their affordability and eco-friendly properties. However, understanding their selectivity and storage stability is vital for their effective use in practical applications. Current work reports the selectivity behavior of a newly developed adsorbent, iron- and zirconium oxide nanoneedle-impregnated cellulose nanofibers (Fe-Zr-NN-CNF), toward cationic and anionic PTEs. Key findings are-(i) The adsorbent demonstrated exceptional selectivity for anionic potentially toxic elements (PTEs), achieving a removal efficiency of at least 98% across a broad pH range (2-9), while exhibiting minimal selectivity for cationic PTEs; (ii) The adsorbent effectively removed arsenite (As~(Ⅲ)) from aqueous media at a dosage of 1 g L~(-1) and pH 7.0. High phosphate concentrations hindered As~(Ⅲ) removal, whereas chloride, nitrate, and sulfate had negligible effects; (iii) Adsorption kinetics, isotherm studies, Fourier-transform infrared spectroscopy (FTIR), and X-ray absorption spectroscopy (XAS) analyses confirmed that As~(Ⅲ) adsorption follows a chemisorption mechanism, involving monolayer binding on a heterogeneous surface; and (iv) The adsorbent exhibited excellent storage stability for at least four weeks at both room temperature (25 ℃) and 40 ℃, indicating long-term usability in practical applications. Thus, the results suggest that Fe-Zr-NN-CNF could be a potential solution for water remediation strategies.

Arsenic remediationIron oxidePotentially toxic elements (PTEs)Selectivity studyStorage stability

Ratul Kumar Shil、Ismail M. M. Rahman、Yuto Sakai、Moe Marumoto、M. Mehedi Hasan Rocky、Masaru Endo、Kuo H. Wong、Asami S. Mashio、Hiroshi Hasegawa

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Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-Machi, Kanazawa 920-1192, Japan||Department of Chemistry, Faculty of Engineering & Technology, Chittagong University of Engineering & Technology, Chattogram 4349, Bangladesh

Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima 960-1296, Japan

Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-Machi, Kanazawa 920-1192, Japan

Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-Machi, Kanazawa 920-1192, Japan||Department of Natural Science, Port City International University, South Khulshi, Chattogram 4225, Bangladesh

Institute of Science and Engineering, Kanazawa University, Kakuma-Machi, Kanazawa 920-1192, Japan

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2025

10.1007/s11270-025-08113-9

Water, air and soil pollution

Water, air and soil pollution

ISSN：0049-6979
年,卷(期)：2025.236(8)
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