Fig. 1From: Bacteria from spent engine-oil-contaminated soils possess dual tolerance to hydrocarbon and heavy metals, and degrade spent oil in the presence of copper, lead, zinc and combinations thereofGrowth pattern of a Achromobacter xylosoxidans CuC3, b Acinetobacter calcoaceticus CuD2, c Achromobacter xylosoxidans CuE2 on SEO in the presence of different concentrations of Cu2+ ( No metal, 100 μg mL−1, 150 μg mL−1, 200 μg mL−1) and d quantity of SEO degraded over a period of 7 daysBack to article page