Removal of manganese (Mn<SUP>2+</SUP>) from water samples using a biocomposite sorbent
Makaleler > Tam Makale · 2024
Yazarlar: Aykut Calisir, Sevtap Caglar Yavuz, Emre Yavuz, Özgür ARAR, Muserref Arda
ENVIRONMENTAL RESEARCH, SCI İndekslerine Giren Dergi, Uluslararası, Wos, 2024, cilt 257, ss 119353-119353
DOI: 10.1016/j.envres.2024.119353
Özet
Herein, tannic acid-tethered cellulose was developed as an efficient and selective sorbent for Mn2+ 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 Mn2+ concentration, contact time, and the presence of interfering ions. Results indicated that Mn2+ removal was highly pH-dependent, with removal efficiency increasing from 8% at pH 2 to99% at pH 9, achieving a remarkable 99% removal rate within only 30 min, highlighting the rapidity of the cellulose sorption kinetics. The results of isotherm studies confirmed that the sorption conformed to the Langmuir model with a monolayer sorption mechanism. Using a sorbent dose of 0.05 g, 99% of Mn2+ could be effectively eliminated from water, achieving a maximum sorption capacity of 32.2 mg/g dry-sorbent. The modified cellulose could be effectively regenerated using 0.5-M HCl or 0.1-M H2SO4, with no considerable deterioration in sorption performance after three sorption-regeneration cycles. The presence of Na+ and K+ had minimal impact on Mn2+ removal, whereas the presence of Ca2+ and Mg2+ at low concentrations facilitated moderate-level Mn2+ removal.