Environmental Engineering Reference
In-Depth Information
1000
Calcite : CaCO
3
900
Goethite : FeO(OH)
800
700
600
500
400
300
200
100
0
5
15
25
35
45
55
65
75
2 theta
FIGURE 21.7
XRD.patterns.of.mine.sludge.
10
8
6
4
Control
Limestone 3%
Sludge 3%
2
0
0
50
100
Time (days)
150
200
(a)
10
8
6
4
Control
Limestone 3%
Sludge 3%
2
0
0
50
100
Time (days)
150
200
(b)
FIGURE 21.8
pH.variation.in.pore.water.from.ield.experimental.plot.(a).0.3.m.depth.and.(b).0.8.m.depth.
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