Geoscience Reference
In-Depth Information
[meq/l]
20
5 cm
10 cm
15 cm
20 cm
25 cm
30 cm
15
10
5
0
0
10
20
30
40
50
60
TIME [days]
Fig. 5.
Time series of divalent iron in mobile phase.
CH
2
O [meq/l]
X3 [meq/l]
10
0.1
CH 2 O - 10 cm
CH 2 O - 20 cm
CH 2 O - 30 cm
8
0.08
0.06
6
X3 - 10 cm
X3 - 20 cm
X3 - 30 cm
0.04
4
0.02
2
0
0
0
10
20
30
40
50
60
TIME [day]
Fig. 6.
Time series CH
2
O and X3 in biophase.
bacteria X3 increase in biophase yield more iron hydroxide into divalent
iron in the lower layer.
The model describing the groundwater quality in a coastal aquifer
was studied through the comparisons with the experiment by the one-
dimensional column of alluvial soil. The model calculates the mass transport
and cation exchange and bacteria-mediated biochemical reducing processes,
specifically the main focus was put on the inclusion of reduced divalent man-
ganese and iron ions into the cation exchange reactions. The approach was
considered useful to predict the reduced level of the seawater in a coastal
aquifer. The applicability of the present approach needs to be calibrated in
the field.
