Abstarct: Among the types of Engineered Nanoparticles that have been used, different combinations of iron nanoparticles have more applications. For example These materials can be used in in-situ remove processes in such contaminants. The advantages of using iron nanoparticles in in-situ remove processes are that they can be injected directly into the sub surface environment. Therefore, it is necessary to know how they transport and behave. In this research, then nanoparticles of iron oxide (III) coated with poly acrylic acid (PAA) in a cylindrical column that filed with glass bead have been studied and using these results, dispersion coefficient (D) and the delay coefficient (Rd) have been calculated. Finally, using the calculated parameters and replace them in analytical response of advection-dispersion equations, the results have been compared with each other