Fig. 4From: Orange peel as low-cost adsorbent in the elimination of Cd(II) ion: kinetics, isotherm, thermodynamic and optimization evaluationsEffects of pH on the uptake of Cd(II), (initial Cd(II) ions concentration = 240 mg/L; adsorbent dosage of 0.04 g/L; temperature 45 °C; agitation time = 120 min)Back to article page