Academic journal article Iranian Journal of Public Health

Effect of Sugarcane Bagasse Addition on the Microbial Community and Decontamination of an Oily Sludge Contaminated Soil

Academic journal article Iranian Journal of Public Health

Effect of Sugarcane Bagasse Addition on the Microbial Community and Decontamination of an Oily Sludge Contaminated Soil

Article excerpt

Background: During cleaning of storage tanks for crude oil and its derivatives, large volumes of oily sludge are dis- charged to the environment. Therefore, it can cause envi- ronmental contamination particularly soil pollution. One of the bioremediation techniques which are considered more recently is composting. In this method for improving biore- mediation process natural and biodegradable bulking agent(s) may be used. Addition of these materials to contaminated soil improves the physical quality of soil and also soil condition- ing, therefore enhances microbial degradation and diversity.

Methods: To evaluate the effectiveness of composting on bioremediation of oily sludge polluted soil, laboratory scale bioreactors were designed. Along with the bioreactor which contains polluted soil with sugarcane bagasse (composting) one bioreactor was filled with only polluted soil as the con- trol. Under these conditions the bioreactors were aerated for five months. During this period, changes in culturable bacte- rial population, oily sludge concentration, and microbial pop- ulation diversity by using DGGE analysis, were evaluated. …

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