Waste Foundry Sand as Permeable and Low Permeable Barrier for Restriction of the Propagation of Lead and Nickel Ions in Groundwater

Table 4

Longevities of WFS-FS barriers under the variation of thickness for capturing of Pb⁺² and Ni⁺² ions.

Thickness of WFS-FS PRB (m)	Longevity (hrs)
	Pb^+2	Ni^+2
0.1	83	9
0.2	----	19.4
0.3	----	31.3

----: run time equal to 120 hrs.