Bioremediation Potential of Piggery Manure in a Soil Contaminated with Crude Oil in Benin City, Nigeria

Abstract

Abstract

Studies were carried out to investigate the bioremediation potential of piggery manure in a soil contaminated with crude oil (Bonny Light) in Benin City, Nigeria. Three levels (0,1,2) litre of crude oil were used for the contamination and three levels (0,1200, 2400) g of piggery manure were applied as the bioremediant. These treatments were arranged in a factorial design. The data collected were analysed using ANOVA and descriptive statistics. The particle size analysis showed no significant differences between the control, contaminated and bioremediated soil sand, silt and clay for both unpolluted and polluted soil did not show any significant differences. There were significant changes in the C: N ratio between the control, contaminated and bioremediated soil. The C: N ratio decreased from 32:1–12.1:1 indicating the degradation of crude oil by the piggery manure due to the microorganisms present in it. Crude oil significantly increased organic matter (2.92–3.14) g/kg in the soil. This increase was observed when one (1) litre of crude oil and 2400 g of piggery manure, respectively were used for bioremediation. Total nitrogen and phosphorus of the contaminated soils were higher than those of the un-amended soil. Application of piggery manure significantly increases available phosphorus from 41.1 to 96.2 mg/kg. This study showed that there were some significant differences in the soil properties of some nutrients such as; organic carbon, organic matter and phosphorus with the exception of N, Ca, Mg, Na, K. Therefore, it may be inferred that piggery manure is capable of improving the soil nutrients in soils contaminated with crude oil.

Keywords: Utilization, Piggery manure, Bioremediation, Contaminated, Soil, Crude oil

Cite this Article

Akarator SE, Molindo WA. Bioremediation Potential of Piggery Manure in a Soil Contaminated with Crude Oil in Benin City, Nigeria. Journal of Agricultural Science and Technology. 2016; 5(1): 33–41p.