the zinc-coated area of the pellet of the treatment (ZnGZ+M-F). Whereas, the least detected amount (0.24% weight) was recorded in the uncoated area of the pellet of the treatment (ZnGZ+M-F), Table . This supports the findings reported by , describing a positive correlation between increasing metal ion concentration and increased mobility of the surface-adsorbed metal inwards into the zeolite pores that act as molecular sieves . The adsorption as well as filtering ability of the applied zeolite led to decreased concentration of the target ions in the medium lending support to the findings reported by , as this also receives support by the ICP-OES findings illustrated below.