Impact of Trace Elements and Impurities in Technical Zero-Valent Iron Brands on Reductive Dechlorination of Chlorinated Ethenes in Groundwater - Permeable Reactive Barrier: Sustainable Groundwater Remediation - page 92

(a)

1.1

1

0.9

0.8

0.7
0.6

0.5

0.4

0.3

0.2

0.1
0

Würth 1 Würth 2 Resp 1 Resp Rh GM 1 GM 2 eerless

AI Ca Fe Mn Co Cr

1.1

(b)

1

0.9

0.8
0.7

0.6

0.5

0.4

0.3
0.2

0.1
0

Würth 1 Würth 2 esp 1 Resp Rh GM 1 GM 2 eerless

COF P S i

FIGURE 5.4
Normalized average trace element surface concentrations concerning different ZVI brands
(GM = Gotthart-Maier), according to EDX analyses. Great variations regarding kinds and
amounts of trace elements are observed.