International Science Community Association International Research Journal of Environmental Sciences 2319-1414 9 1 2020 01 22 Numerical simulation of oil hydrocarbons and heavy metals transport in soil 48 60 EN E. Jayantakumar Singh 1 Department of Chemistry, Manipur University, Canchipur, Imphal, India N. Rajmuhon Singh 2 Department of Chemistry, Manipur University, Canchipur, Imphal, India Rahul K. Kamble 1 Centre for Higher Learning and Research in Environmental Science, Sardar Patel College, Ganj Ward, Chandrapur 442 402, India M.S. Rahman 1 Department of Environmental Science, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh M.A. Islam 2 Department of Environmental Science, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh M.S. Hossen 3 Department of Environmental Science, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh Kassaye Gurebiyaw 1 Department of Natural Resources Management, College of Agriculture and Environmental sciences, University of Gondar, Ethiopia Melese Yigzaw 2 Department of Natural Resources Management, College of Agriculture and Environmental sciences, University of Gondar, Ethiopia Hailu Kendie 3 Amhara Region Agricultural Research Institute (ARARI), Soil and Water Conservation Directorate, Bahir Dar, Ethiopia Gebretsadik Melak 4 Department of Natural Resources Management, College of Agriculture and Environmental sciences, University of Gondar, Ethiopia Mohammed Raffi1 5 Department of Natural Resources Management, College of Agriculture and Environmental sciences, University of Gondar, Ethiopia Alemtsehay Hagos 6 Department of Natural Resources Management, College of Agriculture and Environmental sciences, University of Gondar, Ethiopia M. Rezai 1 Department of Engineering, Ibn-e-Sina University, Kabul, Afghanistan > Research Article 2019 3 27 2020 01 22 Extensive entrance of oil hydrocarbons and heavy metals into subsurface soil and groundwater resources and characteristics of their propagation has become an important matter. The aim of this study is investigating the factors affecting the propagation of the contaminants in the soil using a numerical model called CTRAN/W. Hence a soil environment with 20 meters depth and 45 meters length analyzed. Boundary condition, initial condition and material properties in these simulations varied in every section. According to analyses, in coarse soils, the emission pattern is vertical and downward; however in fine soils horizontal distribution pattern is dominant. In other words generally in coarse soil the emission depth of soil pollution is more than emission length and in fine-grained the length of pollution is greater. With an increase in the density of contaminants, it has penetrated further into the aquifer and this makes it less spread on the surface of the aquifer. In both fine and coarse, the mainstream emission is vertical with an increase in transverse dispersion coefficient, the extent of pollution in the horizon increases. With an increase in longitudinal dispersion coefficient in both fine and coarse soil environment, a broader pattern of propagation is reached and other words in both horizontally and vertically, the emissions will increase. It was also observed that by increasing the ion exchange capacity, the arrival time of pollutants in the soil column increases and steep rise in emissions to reach its maximum is reduced. By increasing alkalinity, ion exchange capacity increases and therefore much more polluting soil adsorbs. Copyright@ International Science Community Association