Fig. 7From: Orange peel as low-cost adsorbent in the elimination of Cd(II) ion: kinetics, isotherm, thermodynamic and optimization evaluationsGraphs of Qt against t for a pseudo-first-order, b pseudo-second-order, c Elovich and d intraparticle kinetic models for the adsorption of cadmium ions at initial metal concentration of 250 mg/L, pH of 5.5 and temperature of 45 °C by orange peel powderBack to article page