ABSTRACT
Bioremediation exercise was done on the artificially polluted agricultural soil. The success of the remediation was determined using spectrophometric method, the soils physicochemical properties were also carried out, the total number of samples is 10 number one is the general control for unpolluted soil sample number two was is the unpolluted sample that was treated with the effluents once number three is the unpolluted sample treated monthly, number four is the unpolluted sample that was treated weekly and number five is the unpolluted sample that was treated with effluents daily ,number six is the general control for the crude oil polluted sample, number seven is the polluted sample that was treated with eluent once number eight is the polluted sample that was treated with the effluent monthly, number nine is the polluted sample that was treated with the effluents weekly and ten is the polluted sample that was treated daily available phosphorus 0.065340391mg/kg, 0.065340391mg/kg, 0.112757803mg/kg, 0.270815842mg/kg, 0.871436394mg/kg, 0.22339843mg/kg, 0.239204234mg/mg/kg, 0.349844862mg/kg, 0.349844862mg/kg, 0.918853805mg/kg, respectively. And available Nitrogen values are0.015051301mg/kg, 0.018540141mg/kg, 0.02726224mg/kg, 0.18077118mg/kg, 0.165071402mg/kg, 0.034239919mg/kg, 0.030751079Mg/kg, 0.039473178mg/kg, 0.053428536mg/kg, 0.074361574mg/kg. The result gotten from the remediation experiment showed that the concentration of the nitrogen and phosphorus is lower in the unpolluted soil sample but was higher in the polluted soil sample when treated with cassava effluent. The nitrogen content and phosphorus increased after remediation. This research work showed that cassava effluents can actually be used in cleaning up crude oil pollution from the environment.
