182
0.06
-   0.05
C)
a)
'   0.04
0
0)
,.-  0.03 -
-0
0
0oSand 1
0] Sand 4
U_   0.02     0Sand
x   Sand 10
0  Sand12
0.01Sand 11
0.0       1.0       2.0       3.0       4.0       5.0
TOC (%)
0.06  ,
-   0.05
C
S0.04
0
Sada
,'-  0.03
n,
0             oSandl1
[] 0             Sand 4
U-   0.02     0   Sand 10
x  Sand 11                               S
0  Sand 12
(d)
0.01   , ,1,1  1,         I  I  ,1,1,1Il ,,,  I  ,  ,1 ,
0.0     2.0      4.0     6.0     8.0     10.0    12.0
Total Iron Content (%)
Fig. 7.8.   First-Order Rate Constant as a Function of (a) Clay Content, (b) Final
Solution pH, (c) TOC and (d) Total Iron Content (%) (Continued).