Sustainable zeolite/activated carbon nanocomposite for dual-dye adsorption, kinetic and thermodynamic studies, and urea electro-oxidation applications.

ABSTRACT: This study developed a novel zeolite/activated carbon nanocomposite (Zeo/AC) for the simultaneous removal of carcinogenic Congo Red (CR) and Crystal Violet (CV) dyes, with subsequent energy recovery. The material was synthesized via a green ball milling-hydrothermal method and characterized thoroughly. The Zeo/AC nanocomposite demonstrated exceptional adsorption performance, achieving record capacities of 752.6 mg g^-1 for CR and 908.3 mg g^-1 for CV at 55 °C and neutral pH. Adsorption was rapid, reaching equilibrium within 60 minutes and following pseudo-second-order kinetics (R ² > 0.998). The process was endothermic and spontaneous. The intermediate pHpzc (6.1) enabled efficient dual-dye removal via synergistic mechanisms: electrostati

SUBMITTER: Alawam AS 

PROVIDER: S-EPMC12605757 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature