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ABSTRACT
The rate of increase in oil spill is rising on daily basis especially in the Niger Delta Area of Nigeria where major exploration and exploitation of the asset “petroleum” is carried out. With aquatic animals, agricultural soil and crop being on the receiving end and gas flaring activities affecting the ozone layers, this research presents an industrially accepted and economic-friendly remediation technology specially designed to treat kerosene hydrocarbon polluted soil using cow dung. A technique called Bioremediation.
The unpolluted soil was first analysed to determine the physico-chemical Properties of the soil after which 5g of Soil Sample was polluted with 500ml of Kerosene Hydrocarbon Pollutant. It should be noted that Data were initially generated for polluted soil before treatment and after treating Soil Sample with 1.6kg of cow manure, the soil sample was observed for a period of eight weeks. A plot of the various physico-chemical parameters was done against treatment time and the Pseudo first and second order Kinetic model was also used to determine the extent of Hydrocarbon Removal. The Kjeldahl digestion technique was used to determine the Total Nitrogen Content and The Total Organic Carbon was determined using Titration method while the Soil PH was also measured using standard method.
After intensive treatment for a period of eight weeks, the Total Heterotrophic Bacteria, Total Organic Carbon and Total Nitrogen Content had decreased to (3.04x 105mg/kg),3.02g/kg and 4.11g/kg. A final Removal Efficiency of 70,27% was also achieved, a pointer to the effectiveness of microorganism in cow manure as a remediation tool in Kerosene Hydrocarbon polluted soil. Other parameter also observed noticeable changes.
