fugacity models

fugacity models - Fugacity-based environmental models Level...

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Fugacity-based environmental models Level 1--the equilibrium distribution of a fixed quantity of conserved chemical, in a closed environment at equilibrium , with no degrading reactions, no advective processes, and no intermedia transport processes (eg. no wet deposition, or sedimentation). Level 2-- describes a situation in which a chemical is continuously discharged at a constant rate and achieves a steady-state and equilibrium condition at which the input and output rates are equal. Degrading reactions and advective processes are the loss or output processes treated. Intermedia transport processes (eg. no wet deposition, or sedimentation) are not quantified. Level 3--A Level III simulation describes a situation which is one step more complex and realistic than the Level II model. Like the Level II model, chemical is continuously discharged at a constant rate and achieves a steady state condition in which input and output rates are equal. The loss processes are degrading reactions and advection. Unlike the Level II model, equilibrium between media is not assumed and, in general, each medium is at a different fugacity. A mass balance applies not only to the system as a whole, but to each compartment. Rates of intermedia transport are calculated using D values which contain information on mass transfer
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This document was uploaded on 10/25/2011.

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fugacity models - Fugacity-based environmental models Level...

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