Environmental Engineering Reference
In-Depth Information
Table 7.15
PAH Reduction from Initial Concentration in LTUs 1 and 2 after 30 Months
of Treatment
LTU 1
LTU 2
%
Reduction
%
Reduction
PA H
[Initial]
[Initial]
Naphthalene (two ring)
2101 ± 168
100
2186 ± 252
98
Acenaphthene (three ring)
878 ± 59
79
940 ± 103
75
Fluorene (three ring)
980 ± 81
84
1022 ± 107
79
Phenanthrene (three ring)
3169 ± 221
83
3360 ± 344
80
Anthracene (three ring)
1453 ± 317
68
1520 ± 274
63
Fluoranthene (four ring)
1460 ± 76
49
1593 ± 186
52
Pyrene (four ring)
1030 ± 123
43
1064 ± 96
44
Chrysene (four ring)
a
263 ± 19
29
274 ± 30
33
Benzo(a)anthracene (four ring)
a
229 ± 13
39
240 ± 24
41
Benzo(b)fluoranthene (five ring)
a
89 ± 10
NR
99 ± 8
NR
Benzo(k)fluoranthene (five ring)
a
91 ± 8
NR
95 ± 7
NR
Benzo(a)pyrene (five ring)
a
72 ± 7
4
71 ± 4
NR
Total PAH
12,570 ± 1043
73
13,254 ± 690
72
Note:
All data are significant at the 95% confidence level, n = 7. NR = no reduction.
a
Indicates a BaP toxic equivalent compound.
350
300
Initial
6 months
13 months
22 months
30 months
250
200
150
100
50
0
BaP Toxic Equivalent Homologues
Figure 7.26
LTU 2 BaP toxic equivalent homologues.
