Fig. 12From: Simultaneous removals of cadmium(II) ions and reactive yellow 4 dye from aqueous solution by bone meal-derived apatite: kinetics, equilibrium and thermodynamic evaluationsLeast square fit of Qt versus t of kinetic plots for the removal of Cd(II) ions on BMDA a first-order, b second-order, c Elovich fits, and d intraparticle diffusion models (adsorbent dosage, 0.04 g/L; pH, 6.0; and temp, 30 °C)Back to article page