Table 2.14 Site hydro-dispersive parameters (Colombano and Hiez 2009)
Site parameters
Parameters for the C10-C12 TPH fraction
Density
ρ
1700 kg m
À3
Carbon partition
coefficient
. oc 2.12 Â 10
5
L kg
À1
Porosity
ϴ
<0.2%
Partition
coefficient
. d 2.12 Â 10
À4
L mg
À1
Longitudinal dispersivity
α L
20 m
Half-life
.
712 days
Longitudinal/transverse
dispersivity ratio
α L/ α T 0.1
Degradation
constant
ʎ
9.6 Â 10
À4
day
À1
Longitudinal/vertical
dispersivity ratio
α L/ α H 0.01
Organic carbon fraction
. oc
<1%
Parameters for the C13-C16 TPH fraction
Parameters for the C17-C40 TPH fraction
Carbon partition
coefficient
. oc 5.0 Â 10
6
L kg
À1
Carbon partition
coefficient
. oc 7.0 Â 10
8
Partition coefficient
. d 5.0Â10
À3
L mg
À1
Partition coefficient
. d 7.0 Â 10
À1
Half-life
.
712 days
Half-life
.
712 days
Degradation constant
ʎ
9.6 Â 10
À4
day
À1
Degradation constant
ʎ
9.6 Â 10
À4
day
À1
Fig. 2.35 Delineation of the model’s pollution sources (Colombano and Hiez 2009)
2 Free Product Recovery of Non-aqueous Phase Liquids in Contaminated Sites:. . .
113