Agriculture Reference
In-Depth Information
1.2
Windsor Soil
1.0
Copper
0.8
0.6
MRTM-Simulated
Ion exchange
0.4
0.2
0.0
0
20
40
60
80
Pore Volume (V/V
o
)
1.0
Bustan Calcareous Soil
Copper
0.8
MRTM
Ion exchange
0.6
0.4
0.2
0.0
0
20
40
60
80
100
120
Pore Volume (V/V
o
)
FIGURE 7.12
Breakthrough results of Cu and Ca from Bustan-subsurface calcareous soil and Windsor acidic
soil. Multireaction transport model (MRTM) and kinetic ion exchange model simulations are
denoted by solid and dashed curves, respectively.
the BTCs were shifted to the left of experimental results. These predictions
are indicative of strong Zn affinity (compared to Ca) at low Zn concentra-
tions based on parameter estimates of ion-exchange isotherms using the
Rothmund-Kornfeld approach.
Another example that illustrates the application of kinetic ion exchange
is that of Elbana and Selim (2011) for Cu transport in different soils (see
Figure 7.12). Here Cu solution was introduced in the form of a pulse into
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