Removal of manganese (Mn) from water samples using a biocomposite sorbent.

Herein, tannic acid-tethered cellulose was developed as an efficient and selective sorbent for Mn⁺ removal from aqueous solutions. The modified cellulose was characterized through scanning electron microscopy, infrared spectroscopy, and elemental analyses. Sorption performance was evaluated using various parameters, including pH, initial Mn⁺ concentration, contact time, and the presence of interfering ions.