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oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/112572026-10-18T21:13:17Zopenairedrivercom_ebyu_10000col_ebyu_10001

Removal of manganese (Mn2+) from water samples using a biocomposite sorbentÇalışır, AykutÇağlar Yavuz, SevtapYavuz, EmreArar, ÖzgürArda, MüşerrefCelluloseMn²⁺RegenerationSelectivitySorptionTannic acidChlorine CompoundsDegradationFlavonoidsInfrared SpectroscopyManganeseMonolayersAdsorptionHydrogen-Ion ConcentrationKineticsMicroscopy, Electron, ScanningTanninsWater Pollutants, ChemicalWater PurificationDeteriorationScanning electron microscopyaldehydeiontanninwatertannin derivativeBiocompositeContact timeInfrared: spectroscopyMn2+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. © 2024 Elsevier Inc.Academic Press Inc.2024Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/11257https://doi.org/10.1016/j.envres.2024.1193530013-9351enEnvironmental Researchinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/11257