Chemical and Biological Technologies in Agriculture

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

Superscripts indicate mean separations that are significant

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