Removal of Hexavalent Chromium from Water Using Cork-Based Biochars Obtained via Slow and Microwave Pyrolysis.

ABSTRACT: Cork-derived biochars produced by slow pyrolysis (C-SP) and microwave-assisted pyrolysis (C-MWP) were evaluated for the removal of hexavalent chromium [Cr(VI)] from aqueous solutions. The materials were characterized by proximate/elemental analysis, N₂ physisorption (BET), thermogravimetry and FTIR. C-SP exhibited a higher specific surface area (174.5 m²·g^-1), a larger micropore volume and stronger O-H/C-O surface signatures than C-MWP, which showed partial aromatization and less-developed texture. Batch equilibrium adsorption experiments at pH 2.0 with initial Cr(VI) concentrations of 5-150 mg·L^-1 and kinetic experiments (c₀ = 40 mg·L^-1) were analyzed by nonlinear fitting to standard isotherm and kinetic models. The

SUBMITTER: Pertile E 

PROVIDER: S-EPMC12693453 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature