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Table 6 Potential ecological risk indices after bioremediation at Trojan and Freda-Rebecca mine dump sites

From: Pyritic metals sequestration on mine dumps treated with oyster mushroom (Pleurotus ostreatus, Jacq.et Fr.)

Trt Trojan mine Freda-Rebecca mine
Mn2+ Cr2+ Pb2+ Fe3+ Cd2+ Mn2+ Cr2+ Pb2+ Fe3+ Cd2+
Trt1
Trt2 143a 281a 657a 448a 342a 141a 283a 659a 447a 340a
Trt3 110b 149b 310b 136b 141b 113b 147b 313b 137b 139b
Trt4 142a 279a 655a 449a 336a 142a 277a 659a 451a 336a
Trt5 100c 110c 123c 113c 111c 102c 111c 122c 114c 113c
Lsd (5%) 11 23 33 18 42.1 12 22 34 16 41
Cv% 10 4 5 7 4 5 4 8 8 9
  1. Superscripts indicate mean separations that are significant