Abstract
The potential of soybean waste (SBW) in enhancing microbial breakdown of crude oil in soil was studied. The soybean waste contained 5.31% nitrogen and 33.2% crude protein while the soil used for the bioremediation study contained 1.89% organic matter, 1.10% organic carbon, 0.21% nitrogen and 0.08 ppm phosphorus. The textural composition of the soil was 76.58% sand, 8.28% silt, 15.16% clay and the soil was classified as sandy loam. The microbiological analysis revealed that aerobic heterotrophic bacteria counts in oil polluted soil amended with SBW ranged between 1.6 × 10 8 cfu/g and 8.9 × 10 8 cfu/g. These counts were higher than those of the unamended soil which ranged from 1.2 × 10 8
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