Microbiological and chemical evaluation of acid mine drainage from mining sites in Southwestern, Nigeria

Microbial content of acid mine drainage effluents contaminated streams from some geographical areas was evaluated. Water obtained sites in Ekiti and Osun state where twelve (12) samples were different locations. Culture plating method used to analyze the for bacteria, Atomic Absorption Spectrophotometer (AAS) determine heavy metals such as Cd, Co, Pb, Cr, Zn, Cu Mn. The results biochemical morphological characterization isolates revealed three probable bacterial which are Bacillus subtilis, Pseudomonas spp. Staphylococcus aureus; B. subtilis being bacteria with highest percentage frequency occurrence. Heavy analysis drains shows that concentration Cr Zn exceeded permissible limit set by WHO except this study established presence sites, is an indication contaminated. It therefore essential proper dissemination information concerning dangers these microbes could pose human.