Bioremediation of Oil-Contaminated Soil Using Emulsifier (Liquid Soap), NPK Fertilizer and Microbial (Bacillus sp) Treatment

Description

– Bioremediation of Oil-Contaminated Soil Using Emulsifier (Liquid Soap), NPK Fertilizer and Microbial (Bacillus sp) Treatment –

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Abstract

Two different set of soil samples were collected near Kaduna Refining and Petrochemical Company Limited (KRPC), a Subsidiary of Nigerian National Petroleum Corporation (NNPC) Kaduna

The first set of samples labelled (D) was obtained from areas where diesel from the refinery spilled into the environment and the second set of samples labelled (P) was collected from areas where petrol leaked and spilled into the environment.

The pH of the soil was found  to be 5.9 and 6.2 for D and P samples respectively.The cation exchange capacity (CEC) was higher in sample P than in sample D (32.0 and 30.0 mmol/kg of soil respectively).

P has high concentrations of cations  ( Ca²⁺, Mg²⁺, K⁺ and Na⁺ with concentration values 3.6, 1.17, 0.50 and 0.22 mol/kg respectively) because of its high CEC while sample D with a lower CEC has a lower concentration of cation (Ca²⁺, Mg²⁺, K⁺ and Na⁺ with concentration values 1.20, 0.27, 0.25 and 0.17 mol/kg respectively).

Introduction

One of the major environmental problems in the world today is hydrocarbon contamination resulting from the activities related to the petrochemical industry.

In Nigeria, oil pollution problems have been prevalent since the commencement of oil exploration and development  of the petroleum industry (Okoh et al., 2001).

Accidental release of petroleum products are of particular concern in the environment. Hydrocarbon components have been known to belong to the family of carcinogens and neurotoxic organic pollutants.

Currently accepted disposal methods of incineration or burial insecure landfills can become prohibitively expensive when amounts of contaminants are large.

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