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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Fungal Biodegradation of Diesel by Ulocladium Atrum
by A. R. H. Binsadiq

Interest in the cleanup of oil contamination in the use of microorganisms has existed for many years, early studies showed that hydrocarbons oxidizing bacteria were widespread in all sites polluted by crude oil. Biodegradation means to use a biological remedy to abate or cleanup site contamination, microorganisms are often used to remedy environmental problems found in the contaminated site. For the process of biodegradation, it is necessary that the microorganisms should be active, so that they can perform their duty efficiently. Some examples of bioremediation related technologies are phytoremediation, bioventing, bioleaching, Bioaugmentation, biostimulation and biotransfomation. On the basis of removal and transportation of oil for treatment, basically there are two methods, in situ and exsitu , and there are potential advantages and disadvantages for both methods . The microorganisms act well only when the hydrocarbons materials help them to generate energy and nutrients to build up more cells. A diesel degrading fungus was isolated from a diesel contaminated site in Riyadh city, Saudi Arabia, and tentatively identified as Ulocladium atrum. Optimization studies using different concentrations of diesel in mineral liquid medium showed that the fungus can grow in all diesel concentrations. Diesel biodegradation and the effect of application frequency were investigated in soils artificially contaminated by diesel amended with mineral liquid medium. The contaminated soil was inoculated by the tested fungus and incubated at 37C for seven weeks. Supplementation of diesel degradation with mineral liquid medium resulted in a significant increase in diesel biodegradation. The characteristics of this fungus suggest that it is suitable for bioremediation of diesel contamination. The significance of this study will give more characters of the microbial degradation of diesel in Saudi Arabia and this will help in the study of bioengineering of these microorganisms and also gives more information about microbial biodegradation of diesel. The potential impact of conducting this research will appear clear in the cleaning-up of petroleum contamination in Saudi Arabia, but the limitation of the study is that we need more extensive studies in the Arabia Gulf Region and especially in Saudi Arabia.
Keywords: bioremediation , biotechnology, contamination, hydrocarbons, soil, treatment
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010