Research Article

The Adsorption of Pb, Zn, Cu, Ni, and Cd by Modified Ligand in a Single Component Aqueous Solution: Equilibrium, Kinetic, Thermodynamic, and Desorption Studies

Figure 7

Effect of pH on percentage removal of heavy metal ions by FGCX (conditions: 7 g/l FGCX; contact time: 70 min; Temperature: 25°C; initial concentration: 0.8 mmol/L; agitation speed: 120 rpm).