Figure 4 compares the performance of equilibrium based model (Eqn 8) in estimating local velocity, [v.sub.s], and travel time, [tau], of the uranin plume by least square fitting of Eqn 20 to BTCs with that of time moment method.
Figure 5 depicts a fundamental difference between the velocity of the uranin plume calculated by power law relation (Eqn 22) and that determined by the ratio of travel path to the first time moment, [tau] (Eqn 16).
Figure 6 illustrates the variation of local velocity, [v.sub.s], and average velocity, [v.sub.a], of the uranin plume along with the average velocity of the bromide plume, [v.sub.b], over the travel path of both plumes.
Variation of retardation factor with travel path of uranin plume
The retardation factor of the uranin plume, when calculated from its first time moment, is equivalent to [R.sub.2].
1994), nonlinear sorption is assumed the most dominant cause of asymptotic behaviour of velocity and retardation factor of the uranin plume in the Krauthausen aquifer.
A local equilibrium-based ID solute-transport model underestimates travel time of an uranin plume in comparison to the method of time moment.
Doring U (1997) Transport der reactiven stoffe eosin, uranin, und lithium in einem heterogenen grundwasserleiter, PhD thesis, Christian-Albrechts Universitat, Kiel, Germany.