The test was terminated after another 19 h. The entire reaction process thus lasted
24 h. Table 14.3 lists a concise time schedule of the pilot test with particular
operations. Throughout the test also physicochemical parameters, notably pH,
redox potential, and the concentration of dissolved oxygen, were observed and
measured by a multiparameter probe Aquaread AP-2000 (Aquaread Ltd., Great
Britain).
Simultaneously with the IBC container test, also a blank experiment was realized
using 50 L barrel filled with the same groundwater. No oxidizing agents were
applied to this barrel, only mechanical and measuring operations (i.e., mixing and
measurements of the selected physicochemical parameters) according to the same
timetable as in the case of the IBC container (Table 14.3) test were carried out.
Table 14.2 The list of contaminants detected in groundwater and their concentration level before
the start and at the end of the pilot test
Contaminant
Before the start of the test
c (μg/L)
At the end of the test
c (μg/L)
Benzene
340 Æ 85
170 Æ 42
Toluene
363,000 Æ 90,700
103,000 Æ 25,700
∑xylenes
480 Æ 120
130 Æ 32
1,2,4-trichlorobenzene
62 Æ 15
18 Æ 4
o-dichlorobenzene
19,000 Æ 4700
5800 Æ 1400
m-dichlorobenzene
3700 Æ 920
970 Æ 240
p-dichlorobenzene
4900 Æ 1200
1300 Æ 320
∑chlorinated ethenes
520 Æ 130
<2
Ethylbenzene
140 Æ 35
44 Æ 11
Chlorobenzene
2900 Æ 720
800 Æ 200
Naphthalene
3600 Æ 900
1200 Æ 300
Phenol
3.0 Æ 0.7
<2
∑cresols
50 Æ 12
220 Æ 55
∑dichlorophenols
9 Æ 2.2
8.1 Æ 2.0
∑chlorophenols
12 Æ 3.0
<2
Aniline
730 Æ 180
320 Æ 80
N-ethylaniline
4.6 Æ 1.1
4.2 Æ 1.0
2,4,6-trimethylaniline
130 Æ 32
<2
Nitrobenzene
2100 Æ 520
2300 Æ 520
Table 14.3 The time
schedule of the pilot test with
substantial operations
Time (h)
Operation
0
Filling the container (900 L)
0.75
Application of the ferrate – ENVIFER (350 g)
1.25
Application of 1st dose of H 2 O 2 (4.5 L)
5
Application of 2nd dose of H 2 O 2 (4.5 L)
24
Termination of the test
320
P. Lacina and M. Hegedüs
24 h. Table 14.3 lists a concise time schedule of the pilot test with particular
operations. Throughout the test also physicochemical parameters, notably pH,
redox potential, and the concentration of dissolved oxygen, were observed and
measured by a multiparameter probe Aquaread AP-2000 (Aquaread Ltd., Great
Britain).
Simultaneously with the IBC container test, also a blank experiment was realized
using 50 L barrel filled with the same groundwater. No oxidizing agents were
applied to this barrel, only mechanical and measuring operations (i.e., mixing and
measurements of the selected physicochemical parameters) according to the same
timetable as in the case of the IBC container (Table 14.3) test were carried out.
Table 14.2 The list of contaminants detected in groundwater and their concentration level before
the start and at the end of the pilot test
Contaminant
Before the start of the test
c (μg/L)
At the end of the test
c (μg/L)
Benzene
340 Æ 85
170 Æ 42
Toluene
363,000 Æ 90,700
103,000 Æ 25,700
∑xylenes
480 Æ 120
130 Æ 32
1,2,4-trichlorobenzene
62 Æ 15
18 Æ 4
o-dichlorobenzene
19,000 Æ 4700
5800 Æ 1400
m-dichlorobenzene
3700 Æ 920
970 Æ 240
p-dichlorobenzene
4900 Æ 1200
1300 Æ 320
∑chlorinated ethenes
520 Æ 130
<2
Ethylbenzene
140 Æ 35
44 Æ 11
Chlorobenzene
2900 Æ 720
800 Æ 200
Naphthalene
3600 Æ 900
1200 Æ 300
Phenol
3.0 Æ 0.7
<2
∑cresols
50 Æ 12
220 Æ 55
∑dichlorophenols
9 Æ 2.2
8.1 Æ 2.0
∑chlorophenols
12 Æ 3.0
<2
Aniline
730 Æ 180
320 Æ 80
N-ethylaniline
4.6 Æ 1.1
4.2 Æ 1.0
2,4,6-trimethylaniline
130 Æ 32
<2
Nitrobenzene
2100 Æ 520
2300 Æ 520
Table 14.3 The time
schedule of the pilot test with
substantial operations
Time (h)
Operation
0
Filling the container (900 L)
0.75
Application of the ferrate – ENVIFER (350 g)
1.25
Application of 1st dose of H 2 O 2 (4.5 L)
5
Application of 2nd dose of H 2 O 2 (4.5 L)
24
Termination of the test
320
P. Lacina and M. Hegedüs