Synergistic adsorption and oxidation of arsenite by Fe-Mn binary oxide-modified bamboo Biochar in the presence of air.

ABSTRACT: The adsorption and oxidation processes of arsenite (As(III)) are investigated in this work utilizing bamboo biochar (BC) modified with Fe, Mn, and Fe-Mn binary oxides (FBC, MBC, FMBC). The modification resulted in substantial enhancements to the bamboo biochar's surface area, pore structure, and functional groups. Batch adsorption experiments showed that FMBC achieved the highest As(III) removal capacity, reaching 5.86 mg g^- 1, outperforming both FBC and MBC. The kinetics data were fitted with a pseudo second-order model and analyzed using the Langmuir-Freundlich isotherm model, resulting in a good correlation coefficient. Characterization techniques, including XRD, FTIR, XPS, and BET analysis, confirmed successful loading of metal oxides and demonstrated As(III) oxidation to ar

SUBMITTER: Rady O 

PROVIDER: S-EPMC12749615 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature