0.25   ,San I                                    (H 3
0   Sand 1 (pH 3.0)
El  Sand 1 (pH 4.0)
0.20Sand 2 (pH 4.0)
0.20                                   x   Sand 5 (pH 4.0)
+   Sand 12 (pH 4.0)
0.15
0.10                                       +F
0.05
o                                              (a)
0.00   iiilIii       II                     I i     iIi
1.4     1.6     1.8    2.0     2.2     2.4     2.6     2.8

TOC

0.25
0.20
0.15
0.10

0.05
n  nn(

4.5   5.0    5.5   6.0   6.5   7.0    7.5   8.0

8.5

Clay Content (%)

Fig. 7.14. Effect of (a) TOC, (b) Clay Content, (c) Total
Final Effluent Solution pH on Rate Constant.

Iron Content, and (d)

195

C,,

C,)
0)

S   Sand i (pH 3.0)
Sand 1 (pH 4.0)
Sand 2 (pH 4.0)
Sand 5 (pH 4.0)
+   Sand 12 (pH 4.0)
+     Sa0    2(b
_             iiii                  iiii

U .Uu