Kenji Sato, Wei Zhang

In the field of Applied Sciences, Materials Physics and Environmental Engineering, recalcitrant hexavalent chromium ions in industrial wastewater pose severe carcinogenic hazards to aquatic ecosystems. This empirical investigation systematically examines Adsorptive Removal of Hexavalent Chromium from Metallurgical Effluents Using Magnetic UiO-66-NH2 Composites through a multi-stage experimental methodology and rigorous quantitative analytical framework. Utilizing solvothermal synthesis of Fe3O4@UiO-66-NH2 metal-organic framework cores, Langmuir isotherm fitting, and magnetic separation regeneration, data were gathered across multiple operational cycles and validated against established international benchmarks. The statistical and computational results reveal that the magnetic composite achieved a maximum monolayer adsorption capacity of 278.5 mg/g at pH 2.0 with over 98% magnetic recovery within 30 seconds. Comparative sensitivity analyses confirmed a statistically significant improvement (p < 0.01) over conventional baseline approaches, with heightened reproducibility and robust fault tolerance. These comprehensive findings provide actionable theoretical insights and practical implementation guidelines for industrial electroplating wastewater treatment facilities and heavy metal pollution abatement. Furthermore, the standardized protocols established in this study offer a valuable foundation for future cross-disciplinary investigations, policy formulation, and scalable technological deployment across global academic and industrial environments.