|Bioremediation is a waste management technique that involves the use of organisms to remove or neutralize pollutants from a contaminated site. According to the EPA, bioremediation is a treatment that uses naturally occurring organisms to break down hazardous substances into less toxic or non toxic substances.
The bioremediation potential of Pseudomonas aeruginosa in removing some heavy metals from industrial effluent waste water in Lagos state, Nigeria was investigated. The effectiveness of this bioremediation was tested on albino rats. The common heavy metals known to be pollutants in oil-laden wastewater tested for in the wastewater are Cadmium (Cd), Chromium (Cr), Nickel (Ni), lead (Pb), Selenium (Se), Arsenic (Ar) and Zinc (Zn). These metals are poisonous to the body system when used. Having determined the concentrations of these metals in the effluent waste water by Atomic Absorption Spectrophotometric test, the results revealed that that Pb, Se, As and Cd are present at concentrations 0.2843 parts per million (ppm), 19.418 ppm, 5.02 ppm and 0.104 ppm respectively. These values fall out of the range required by World health Organization (WHO) standard. Nickel and Cr are present at concentrations of 0.070 and 0.050 ppm and were found to be within the range of WHO standard. Zinc was not detected at all.