Analysis reveals biodegradable nanocomposite effectively removes Cu2+ ions from real water, suggesting its potential as an efficient adsorbent.
This study presents an environmentally friendly and nontoxic method for the selective separation and removal of trace amounts. A magnetic nanocomposite made of Fe 3 O 4 /chitosan–acrylic acid was utilized to separate and remove Cu 2+ ions using its magnetic properties. Various characterization techniques, including Fourier transform infrared (FTIR) spectroscopy, X‐ray diffraction (XRD), scanning electron microscope (SEM), thermogravimetric analyzer (TGA), and VSM, were employed to investigate and identify the nanocomposite. Additionally, the research discusses adsorption isotherm models related to the adsorption of Cu 2+ ions. The maximum adsorption capacity of the biodegradable Fe 3 O 4 /chitosan–acrylic acid nanocomposite for Cu 2+ ions was found to be 30.68 mg/g. The adsorption process followed the Freundlich isotherm model when using the Fe 3 O 4 /chitosan–acrylic acid adsorbent. The method exhibited a linear range of 10–1000 µg/L for Cu 2+ ions, with a limit of detection (LOD) of 0.15 μg/L for the adsorption of Cu 2+ ions by the Fe 3 O 4 /chitosan–acrylic acid adsorbent. These findings indicate that Fe 3 O 4 /chitosan–acrylic is a high‐performance adsorbent for removing Cu 2+ ions from tap, well, river, and spring water samples.
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Mamaghani et al. (2025) studied this question.
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