CHAPTER ONE1.0 INTRODUCTIONSoil contamination is one of the major environmental problems facing the world today.Contamination of soil by hydrocarbons (mostly petroleum hydrocarbons) is becomingprevalent worldwide (Njoku et al., 2008). This is probably due to heavy dependence onpetroleum as a major source of energy throughout the world, rapid industrialization,population growth and complete disregard for the environmental health. In Nigeria, oilpollution problems have been prevalent since the ...