Bioremediation of Crude Oil-Polluted Soil Using Bacteria and Poultry Manure Monitored through Soybean Productivity
Alfreda O. Nwadinigwe, Ekene G. Onyeidu
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Department of Botany, University of Nigeria, Nsukka, Enugu State, Nigeria
Pol. J. Environ. Stud. 2012;21(1):171-176
Bioremediation of crude oil-contaminated soil was carried out using endogenous oil-degrading bacteria isolated from deliberately polluted soil and poultry manure. Isolates were subjected to morphological, physiological and biochemical tests and identified as Pseudomonas sp. and Bacillus sp. The results showed that the control (without crude oil treatment) significantly (P<0.01) produced the most pronounced result in germination, growth and productivity of the soybean plants used for monitoring bioremediation efficacy. This was followed by the consortium, Pseudomonas, Bacillus, nutrient broth, poultry manure, and crude oil (P<0.01 significance). This indicates that bioaugmentation with bacteria and biostimulation with poultry manure were remediative to crude oil-polluted soil, with bioaugmentation performing better than biostimulation.
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