Study on the Removal of Cr(VI) Ions by Fe-MOF from Simulated Hydrometallurgy Wastewater

Large amounts of wastewater containing chromium ions at low concentrations are frequently generated during the hydrometallurgy process, posing serious threats to the environment. Hence, the development of adsorbents with a strong affinity for chromium ion removal is a critical challenge. In this work, Fe-MOF was prepared by a hydrothermal method and then used as an adsorbent to remove chromium ions from simulated hydrometallurgy wastewater. The effects of solution pH, adsorbent dosage, and contact time on the removal efficiencies of Cr(VI) ions were investigated synthetically, and the optimal adsorptionAdsorption conditions were obtained. The results indicated that Fe-MOFFe-MOF material could realize the effective removal of Cr(VI) ions from hydrometallurgy wastewater. The optimum adsorptionAdsorption efficiency of Cr(VI) ions reached 63.47% when the pH was 4 and the contact time was 1 h. Therefore, it has potential applications in hydrometallurgy wastewater purification.