Wolfe 1987). In a batch system, the transition to constant kinetics can be described
with the following model (Johnson et al. 1996):
À
d C
½ Š
dt
¼
r m C
½ Š
K 1=2 þ C
½ Š
ð6:42Þ
where r m is the maximum reaction rate for specific iron metal characteristics, and K 1/
2 is the concentration of C at
r m
2 .
Heterogeneous Approach
Heterogeneous reactions imply the following steps:
Table 6.9 (continued)
Reactant
Pollutant
k SA (L m
À2 h
À1
)
References
ZVI microparticles
(0.312 m
2 g
À1
)
CT
2.76 Æ 0.87 Â 10
À2
Onanong et al. (2007)
CF
9.62 Æ 2.59 Â 10
À4
DCM
1.82 Æ 0.53 Â 10
À5
1,1,1,2TeCA
2.98 Æ 0.71 Â 10
À2
1,1,1-TCA
1.24 Æ 0.16 Â 10
À2
1,1,2-TCA
9.30 Æ 0.84 Â 10
À4
1,1,2TCMP
1.36 Æ 0.16 Â 10
À3
1,2,3-TCP
3.53 Æ 0.64 Â 10
À5
1,2,3TCMP
8.49 Æ 1.27 Â 10
À4
1,2-DCMP
2.42 Æ 0.40 Â 10
À4
2,2-DCP
7.16 Æ 0.83 Â 10
À4
1,2-DCP
2.24 Æ 0.86 Â 10
À5
Pd/Fe nanoparticles
(51.4 m
2 g
À1
)
CT
3.59 Â 10
À3
Wang et al. (2009c)
CF
2.67 Â 10
À3
DCM
3.54 Â 10
À5
Cu/Fe microparticles
(2.21 m
2 g
À1
)
HCB
1.01 Æ 0.02 Â 10
À3
Yuan et al. (2010a)
PeCB
0.15 Æ 0.01 Â 10
À3
1,2,3,4TeCB
0.14 Æ 0.11 Â 10
À3
1,2,3,5TeCB
0.11 Æ 0.04 Â 10
À3
1,2,4,5TeCB
0.08 Æ 0.03 Â 10
À3
1,2,3-TCB
0.03 Æ 0.00 Â 10
À3
1,2,4-TCB
0.03 Æ 0.00 Â 10
À3
6 In Situ Chemical Reduction of Chlorinated Organic Compounds
319