This work, which was supervised by Professor G.O. Anoliefo, and submitted to the Department of Plant Biology and Biotechnology, University of Benin, Nigeria, in Partial Fulfillment of the Requirements for the Award of Doctor of Philosophy Degree in Ecophysiology and Bioremediation Technology, investigated the impact of substrate amendment and microbial augmentation on the bioremediation of waste engine oil-polluted soil. After subjection of polluted soils to the various treatments, significant decreases in soil physicochemical parameters were recorded excepting total organic ...