• Poonam Soni
• Arun Kumar
• A. Rani

Fluoride ion is a ubiquitous micro pollutant in groundwater and the risk for fluorosis associated with use of such water for human consumption is one of the environmental hazards faced worldwide. The aim of this paper is to present a mechanistic model for leaching kinetics of fluoride ion on undisturbed soil column. The mathematical formulation takes into account convective-transport, hydrodynamic dispersion and retardation factor. Appropriate initial and boundary conditions have been set as per the soil kinetics. The mechanistic model so developed is based on the assumption that flow in the soil column is in vertical direction and one dimensional only, soil profile is homogeneous and isotropic. Based on these assumptions the partial differential equations so obtained have been solved numerically using explicit finite difference method. The full model does seem capable of modelling the experimentally observed break-through curves but a much greater understanding of the underlying chemistry is required to develop a more refined model.

Fluoride ion, explicit finite difference method, retardation factor, leaching kinetics

"Fluoride Ion Leaching Kinetics in Soil: A Mechanistic Model", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.135-137, March-2019, Available :http://www.jetir.org/papers/JETIRAL06030.pdf

"Fluoride Ion Leaching Kinetics in Soil: A Mechanistic Model", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp135-137, March-2019, Available at : http://www.jetir.org/papers/JETIRAL06030.pdf