Bioremediation of Crude Oil Contaminated Soils using Cow Dung as Bio-Enhancement Agent: A Review

Author(s): *Shweta Yadav

Abstract: Cow dung is an excreta obtained from bovine animals it is the most cheap and easily available bio resource available in our country cow dung is a dockyard of several microorganisms which are substantially worthwhile to the nature due to their capability to produce wide range of metabolites having instrumental importance Petroleum has developed to be the cornerstone of today’s automobile society, now it has shown several threats to the present environment. By fault or accidentally several oil spills occur which actually can cause harm to the soil. Contamination of soil and water resources with petroleum oil and its products has become a serious problem due to carcinogenic and mutagenic compounds. Efforts are now focused on seeking potential remediation techniques for cleanup of petroleum hydrocarbons-contaminated soils in a cost effective and eco-friendly way. Various physical, chemical and biological remediation strategies have been used to restore contaminated soils.Cow dung is much rich in microflora Acinetobacter, Bacillus, Pseudomonas, Serratia and Alcaligenes spp Stenalraphamomr and Pseudomonas species were some of the common microbial isolates present in it. Cow dung also acts as rejuvenating agent as it provides source of Na, K, Ca and also when incorporated with any other animal manure showed best results.

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