Synthesis of Gelatin-Cellulose Nanocrystals Hydrogel Membrane For Removal of Cu (II) And Co (II) From Mining Processes Wastewater

Abstract This study describes the removal of Cu (II) and Co (II) ions from mining processes wastewater using synthesis of Gelatin-cellulose nanocrystals (CNCs) hydrogel membrane (GCHM). In a batch experiment, the influence of different parameters such as pH, contact time, temperature, and ratio of gelatin and CNCs was evaluated. Higher removal efficiency was obtained at ratio 3 ÷ 1 and at pH 5 and 7 for Cu (II) and Co (II), respectively, and a contact time of 120 mins and a temperature of 30°C. The experimental data fitted satisfactory to Freundlich isotherm model. The adsorption of metal ions has been fit by the particle diffusion model. The results revealed that gelatin and CNCs were identified as the low-cost and promising adsorption material for the removal of heavy metals from wastewater.