Effect of oil-degrading bacteria on geotechnical properties of crude oil contaminated sand

摘要: Various materials have conventionally been utilized to improve geotechnical properties of soils. Recently, utilization microorganisms this end has attracted lots attention because its high capabilities. oil degrading bacteria proven be effective on crude pollution from the soil. However, their effect soil not thoroughly investigated. In research, various oil-degrading were employed degrade contamination contaminated sandy Then, alterations bio-treated sand ascertained. The results showed that by employing these microorganisms, more than 50% and 80% was degraded after 10 30 days bio-treatment, respectively. Moreover, samples, which are slightly contaminated, acquire larger values maximum dry density cohesion in comparison untreated samples. As treatment time increases, value internal friction angle remains almost constant unconfined compression strength increases. Generally, bio-treatment alters application as a road basement construction erosion controller is suggested.