Aim of this study was to investigate the use of modified and carbonized SorghumHull of two different pore sizes (150μm and 250μm meshes)inthe removal of Zinc (II) ion from aqueous solution. The effect of contact time (20,40, 60, 80 and 100) minuteswere investigated and reported. The maximum adsorption for 150μm and 250μm were at 40th and 60th minutes respectively (55.152mg/l and 55.196mg/l). Both pore sizes showed peak adsorption of Zn2+at various contact time as shown in table 1. Kinetic modelings of the results of Zn2+ of both pore sizes were also investigated. These results showed that Pseudo second order kinetic model best describes the process and the Mechanism of adsorption show that 150μm and 250μm were particle diffusion controlled.