322 μmol/L. Then the concentration rose to 528 μmol/L 34 days after the injection
and stayed constant. The reductive conditions in the subsurface were not strong
enough to establish a long-term reduction of main contaminants (Fig. 5.12, Vacková
2018). Therefore, the final reduction of ClE in AW5–57 was negative and increased
by 25% at the end of the monitoring.
The concentration of TCE was reduced by 7% compared to the pre-application
values within 5 months of the application. The concentrations of DCE and VC rose
by 14% and 26%, respectively.
In the borehole AW5–58, the reduction of ClE was even flatter (Fig. 5.13,
Vacková 2018). After the injection, a slight decrease in the total ClE (14%) was
registered. Considering the detection of a maximum concentration of iron on site,
Fig. 5.11 Effect of the application of NANOFER STAR nZVI with CMC on E H values. (Adapted
from Vacková 2018)
Fig. 5.12 Reduction of ClE in AW5–57 after the NANOCOMPOSITE with CMC application.
(Adapted from Vacková 2018)
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V. Stejskal and N. Vacková
and stayed constant. The reductive conditions in the subsurface were not strong
enough to establish a long-term reduction of main contaminants (Fig. 5.12, Vacková
2018). Therefore, the final reduction of ClE in AW5–57 was negative and increased
by 25% at the end of the monitoring.
The concentration of TCE was reduced by 7% compared to the pre-application
values within 5 months of the application. The concentrations of DCE and VC rose
by 14% and 26%, respectively.
In the borehole AW5–58, the reduction of ClE was even flatter (Fig. 5.13,
Vacková 2018). After the injection, a slight decrease in the total ClE (14%) was
registered. Considering the detection of a maximum concentration of iron on site,
Fig. 5.11 Effect of the application of NANOFER STAR nZVI with CMC on E H values. (Adapted
from Vacková 2018)
Fig. 5.12 Reduction of ClE in AW5–57 after the NANOCOMPOSITE with CMC application.
(Adapted from Vacková 2018)
98
V. Stejskal and N. Vacková