Table 2 The composition of the pots used in the phytoremediation experiment.

From: Lead and copper removal from sterile dumps by phytoremediation with Robinia pseudoacacia

Experimental variant

Composition and watering/irrigation solution

Variants codes

Variant 0

Unpolluted soil (reference) (1000 g) + tap water

US + TW

Variant 1

Sterile material (1000 g) + tap water

SM + TW

Variant 2

Sterile material (1000 g) + enzyme solution

SM + ES

Variant 3

Sterile material (1000 g) + solution based on KH2PO4 (99.5%)

SM + MP

Variant 4

Sterile material (500 g) + unpolluted soil (500 g) + tap water

SM + US + TW

Variant 5

Sterile material (500 g) + unpolluted soil (500 g) + enzyme solution

SM + US + ES

Variant 6

Sterile material (500 g) + unpolluted soil (500 g) + solution based on KH2PO4 (99.5%)

SM + US + MP

Variant 7

Sterile material (800 g) covered with sludge (200 g) + tap water

SM + S + TW