Zr-gallic acid based metal organic compound as adsorbent for extraction of uranium(vi) from nitrate solution: adsorption behaviors and mechanisms.

ABSTRACT: In this study, a zirconium-gallic acid metal-organic compound (Zr-GA) was synthesized via a hydrothermal method and evaluated as a high-performance adsorbent for uranium(vi) removal from aqueous solutions. Comprehensive physicochemical characterization confirmed the formation of a mesoporous sorbent with a highly functionalized surface rich in oxygen-donor groups such as carboxylates and phenolics, enabling a high density of reactive binding sites. Batch experiments were conducted to assess the effects of pH, dosage, contact time, temperature, and uranium concentration, with all variables showing strong influence on sorption efficiency under 0.1 M nitric acid conditions. Kinetic studies followed the pseudo-second-order model, suggesting a chemisorption-controlled mechanism, while in

SUBMITTER: Masoud AM 

PROVIDER: S-EPMC12801241 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature