Optimization of Pt(II) and Pt(IV) Adsorption from a Water Solution on Biochar Originating from Honeycomb Biomass.

ABSTRACT: Novel CO₂- and H₃PO₄-modified biochars were successfully synthesized from raw honeycomb biomass. They were characterized via several instrumental techniques. The optimal Pt(II) and Pt(IV) adsorption onto the studied biochars was reached for the initial pH of 1.5 and a contact time of 5 min (Pt(II)) and 24-48 h (Pt(IV)). The highest static adsorption capacities for Pt(II) and Pt(IV) were obtained for the H₃PO₄-modified biochar: 47 mg g^-1 and 35 mg g^-1, respectively. The Freundlich model described the Pt(II) adsorption isotherms onto both materials and the Pt(IV) adsorption isotherm onto the CO₂-activated material, and the Langmuir model was the best fitted to the Pt(IV) adsorption isotherm onto the H

SUBMITTER: Morlo K 

PROVIDER: S-EPMC10820625 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature