Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.2250.2257RoshanfekrA.KashefipourS.M.JafarzadehN.122008812In the present research, the dissolved lead is modeled using a linked
1D and 2D hydro-environmental model. Details are given for the governing
equations and solution methods used in these numerical models, together
with a discussion of a new development in dissolved heavy metals modeling
using varied reaction coefficients in the model. It is found that pH and
EC play an essential role in adsorption and desorption of heavy metals
by the particles in solution. Therefore, in this study it has been tried
to find the best relationship between pH and EC with the reaction coefficient.
Relatively close agreement between predicted results and field measured
dissolved lead concentrations were obtained for different varied reaction
coefficients using the linked 1 and 2D model. Finally, the best relationships
for the reaction coefficients for dissolved lead were introduced and the
results were successfully compared with the corresponding measured values.]]>Cunge, J.A., F.M. Jr. Holly and A. Verwey,1980Diagomanolin, V., M. Farhang, M. Ghazi-Khansari and N. Jafarzadeh,2004Falconer, R.A.,1993Falconer, R.A., B. Lin and S.M. Kashefipour,2005Kashefipour, S.M.,2002Kashefipour, S.M., B. Lin and R.A. Falconer,2006Nassehi, V. and J.H. Bikangaga,1993Orlob, G.T.,1983Shrestha, P.L. and G.T. Orlob,1996Turner, A., M. Martino and S.M. Le-Roux,2002Wu, Y., R.A. Falconer and B. Lin,2001Wu, Y., R.A. Falconer and B. Lin,2005Yang, L., B. Lin, S.M. Kashefipour and R.A. Falconer,2002