biostudies-literaturePertile EVŠB-TUO, Faculty of Mining and GeologyMinistry of Education, Youth and Sports of the Czech Republic4501https://www.ebi.ac.uk/biostudies/studies/S-EPMC12693453biostudies-literatureUnknown30(23)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 (<i>c</i>₀ = 40 mg·L^-1) were analyzed by nonlinear fitting to standard isotherm and kinetic models. The Molecules (Basel, Switzerland)Removal of Hexavalent Chromium from Water Using Cork-Based Biochars Obtained via Slow and Microwave Pyrolysis.PMC126934532025/014.SP2024/30No. 2023056Vaclavik VBerkyova LDvorsky TBalvin PPertile EfalseRemoval of Hexavalent Chromium from Water Using Cork-Based Biochars Obtained via Slow and Microwave Pyrolysis.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 (<i>c</i>₀ = 40 mg·L^-1) were analyzed by nonlinear fitting to standard isotherm and kinetic models. The 2025-01-01T00:00:00Z2025 Nov2026-05-26T14:01:07.97Z2026-05-24T03:11:39.704ZS-EPMC126934534137509910.3390/molecules30234501