Environmental Engineering Reference
In-Depth Information
Table 2.1
Average Percent Reduction of Metal Concentration and Pore Volume
Fraction of Water Transported Toward Cathode Chamber (Pamukcu and Wittle,
1993)
Soil*
Ty p e
KS
KH
KG
MS
SS
Metal
%
Rem*
PV*
%
Rem
PV
%
Rem
PV
%
Rem
PV
%
Rem
PV
Cr
93
0.18
97
0.15
95
0.23
95
0.12
97
0.12
Cs
72
0.65
74
0.30
77
0.64
55
0.96
89
0.30
Sr
98
0.41
96
0.88
99
0.44
92
0.53
99
0.63
U
79
0.35
70
0.69
85
0.25
44
0.77
33
0.64
*%
Rem
: percent removal at lowest concentration point
*
PV
: Pore volume of water to cathode
*
KS
:Kaolinite;
KH
:Kaolinite with humic substances;
KG
: Kaolinite with groundwater
salts;
MS
: Montmorillonite;
SS
= Clayey sand with 10% kaolinite
1
anode
water
cathode
water
SOIL
0.8
0.6
0.4
0.2
0
A
Anode
Center
Cathode
C
KS
KG
KH
SS
MS
Figure 2.25
Post-EK distribution of mass fraction of Strontioum (Sr) in
saturated
clay
soils (Pamukcu et al., 1997)
cumulative fraction of pore volume of water flow toward
the cathode electrode compartment during each treatment.
The variations in the concentration reduction percentages
appear to have little or no correlation with the volume of
flow achieved during treatment, but depend on the soil
matrix and the metal type mostly. For the cationic species
Search WWH ::
Custom Search