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Eco-friendly nanoparticles: mechanisms and capacities for efficient removal of heavy metals and phosphate from water using definitive screening design approach

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Abstract

Can nano-zero-valent iron, synthesized using oak leaf extract, be the key solution for water preservation, efficiently removing heavy metal ions and phosphate anions simultaneously? This research unveils how this technology not only promises high efficiency in the remediation of water resources, but also sets new standards for environmentally friendly processes. The high antioxidant capacity and high phenol content indicate suggest the possibility of oak-nZVI synthesis using oak leaf extract as a stable material with minimal agglomeration. The simultaneous removal of Cd and phosphates, as well as and Ni and phosphates was optimized by a statistically designed experiment with a definitive screening design approach. By defining the key factors with the most significant impact, a more efficient and faster method is achieved, improving the economic sustainability of the research by minimizing the number of experiments while maximizing precision. In terms of significance, four input parameters affecting process productivity were monitored: initial metal concentration (1–9 mg L−1), initial ion concentration (1–9 mg L−1), pH value (2–10), and oak-nZVI dosage (2–16 mL). The process optimization resulted in the highest simultaneous removal efficiency of 98.99 and 87.30% for cadmium and phosphate ions, respectively. The highest efficiency for the simultaneous removal of nickel and phosphate ions was 93.44 and 96.75%, respectively. The optimization process fits within the confidence intervals, which confirms the assumption that the selected regression model well describes the process. In the context of e of the challenges and problems of environmental protection, this work has shown considerable potential and successful application for the simultaneous removal of Cd(II) and Ni(II) in the presence of phosphates from water.

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Acknowledgements

The authors gratefully acknowledge the financial support of the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Grant No. 451-03-47/2023-01/200125 and Grant No. 451-03-47/2023-01/200156). The content of this document is the sole liability of the University of Novi Sad, Faculty of Sciences.

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Jovana Jokić Govedarica contributed to formal analysis, writing—original draft, conceptualization, methodology, validation, data curation, and visualization. Dragana Tomašević Pilipović contributed to methodology, visualization, validation, writing—review & editing. Vesna Gvoić contributed to software, methodology, data curation, validation, writing—review & editing. Đurđa Kerkez contributed to conceptualization, writing—review & editing, and supervision. Anita Leovac Maćerak contributed to visualization, investigation, writing—review & editing. Nataša Slijepčević contributed to conceptualization, writing—review & editing. Milena Bečelić-Tomin contributed to writing—review & editing, and supervision

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Correspondence to Dragana Tomašević Pilipović.

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Jokić Govedarica, J., Tomašević Pilipović, D., Gvoić, V. et al. Eco-friendly nanoparticles: mechanisms and capacities for efficient removal of heavy metals and phosphate from water using definitive screening design approach. Environ Geochem Health 46, 118 (2024). https://doi.org/10.1007/s10653-024-01879-7

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  • DOI: https://doi.org/10.1007/s10653-024-01879-7

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