Authors : Ahmed Hazim Abdulkareem, Ayad Sleibi Mustafa and Rasha Ali Soud
Abstract: This study simulate the transfer of Cs-137 contaminate of the aquifer system for Nuclear Research Center at Al-Tuwaitha site, using processing MODFLOW Software package Version 8. The site is located in South of the province of Baghdad near the Tigris River and contaminated with radiation as a result of exposure for bombing and acts of vandalism and looting in 2003. MT3D Model was used to study the contaminant distribution in aquifer and its change with time. The results of transport model showed that the spread of Cs-137 contaminate increased with time and its direction with the ground water movement. The migration of contaminants in horizontal direction is low which the seepage velocity for the first, second and third layer were 0.0357, 0.51 and1.76 m/year, respectively with approximately oval shape based on the ratio of longitudinal dispersion and diffusion coefficients. A distance of 690 m that the plume moved during 20 years of the simulation towards the pumping well existing in the direction of the water of the Tigris River. It was a relationship between the surface water (Tigris River), groundwater and the nature of the soil, a change in one of those elements may affect the others.
Ahmed Hazim Abdulkareem, Ayad Sleibi Mustafa and Rasha Ali Soud, 2019. Model Simulation of Cs-137 Contaminate at Al-Tuwaitha Site. Journal of Engineering and Applied Sciences, 14: 684-692.