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Paper Information

Journal:   ESTEGHLAL   SPTEMBER 2002 , Volume 21 , Number 1; Page(s) 43 To 56.
 
Paper: 

MATHEMATICAL MODELING OF CONTAMINATED SOIL BIOREMEDIATION BASED ON CONVECTION DISPERSION PHENOMENA

 
 
Author(s):  YAGHMAEI S., SEYF KORDI A.A., SHIR ZADI H.
 
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Abstract: 

A mathematical model has been analyzed for in-situ bioremediation with the purpose of remediating organic contaminated soil. Oxygen rich water when passed through the porous media of soil activates the aerobic microorganisms, leading to the biodegradation of the organic content. The model equations comprise three convection-dispersion partial differential equations and one ordinary differential equation. Dimensional analysis of the model equations has been performed and the solution of these equations has been conducted using the finite difference method. The effects of insufficient oxygen supply, growth of biomass and resistance to contaminant migration on the rate of biodegradation have been analyzed by numerically solving the equations.
The results from the numerical simulation indicate that the rate of biodegradation of contaminants in soil may be constrained not only by insufficient oxygen supply, but also by resistance to contaminant migration within the pore network.

 
Keyword(s): BIOREMEDIATION, SOIL, POROUS MEDIA, MODELING
 
References: 
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