Heavy Metal Tolerance of Bacterial Isolates from Solid Waste Dumping Sites in Abuja, Nigeria
نویسندگان
چکیده
Bacteria have special bio-mechanism to resist toxic heavy metals. This study investigated metal tolerance potentials of bacterial isolates from solid waste dumping sites (Abaji, Bwari, Gosa, Gwagwalada, Kuje, and Kwali) in Abuja, Nigeria. Soil samples were randomly collected each location using soil augers at depths 0 – 15, 15 35 45 cm. They analyzed bacteriologically cultural/biochemical techniques chemically by exposing the graded concentrations (50 - 400 μg/mL) chromium (Cr), nickel (Ni) lead (Pb) on nutrient agar for test. Statistical analysis revealed a significant decrease (p<0.05) heterotrophic count with depth; highest counts (6.89 × 109 CFU/g) noted cm (Gosa) lowest (1.32 103 found 30 (Kuje). The isolated bacteria (n=54) Proteus (33.3 %), Providencia (29.6 Pseudomonas (16.6 Bacillus (9.3 Micrococcus (5.5 Escherichia coli (2.1 Enterobacter Serratia %). All these except spp., spp. displayed 100 % resistance Cr, Ni Pb ≥ 200 μg/mL MICs (μg/mL) being 850 1700 (Pseudomonas spp.), 950 2250 spp.) 900 1750 respectively. Majority (24.1 38.9 %) Gosa Gwagwalada sites. Our findings suggested could be promising remediation metals
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ژورنال
عنوان ژورنال: International Journal of Environment
سال: 2023
ISSN: ['2091-2854']
DOI: https://doi.org/10.3126/ije.v12i1.52441