Effect of microorganisms in the bioremediation of spent engine oil and petroleum related environmental pollution

Abstract

The technological developments currently witnessed in the world regarding the utilization of hydrocarbon related products have increasingly brought about all forms of hydrocarbon related environmental pollution. This current review documents the influence of hydrocarbon utilizing microorganisms in bringing about biodegradation of spent engine oil and other petroleum related environmental pollution.  Hydrocarbonoclastic bacteria and fungi when given optimum environmental  conditions and nutritional requirements have been documented to bring about effective bioremediation of oil polluted environments. This review has compiled the monumental influence of hydrocarbonoclastic microorganisms most especially bacteria and fungi in aiding bioremediation of spent engine oil and other petroleum related environmental pollution. Pseudomonas alcaligenes LR14 (59%), Klebsiella aerogenes CR21 (62%), Klebsiella pneumonia CR23 (58%), Bacillus coagulans CR31 (45%) and Pseudomonas putrefacience CR33 (68%) reportedly exhibited spent engine oil polluted soil degradation rate while Fungi like Aspergillus,  Cephalosporium and Pencillium species were also found to be the potential microorganisms responsible for hydrocarbon bioremediation. This current review, equally documents the environmental and nutritional requirements needed by these hydrocarbon oxidizers to accomplish the desired bioremediation process.