Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 82, Issue -, Pages 67-72Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2012.12.015
Keywords
Biodegradation; Heterotrophic; Algae; Crude oil; Scenedesmus obliquus; Chlorella vulgaris
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One of the major environmental problems nowadays is petroleum hydrocarbon contamination, particularly in the zones of petroleum production, and petrochemical industries. This study was carried out to evaluate the potential of two green algae Scenedesmus obliquus and Chlorella vulgaris to degrade crude oil. Experiments were performed by incubating algal cultures with 0.5, 1, 1.5 and 2% crude oil for incubation period of 15 days under heterotrophic conditions. It was found that Scenedesmus obliquus and Chlorella vulgaris performed the highest biodegradation rate of crude oil when 0.5 and 1% oil was applied. The highest growth of S. obliquus was attended with 0.5% crude oil; while it was recorded at 2% for C. vulgaris, under the same heterotrophic conditions. Both algae could grow and degrade oil effectively when incubated with low concentrations of oil. (c) 2013 Elsevier Ltd. All rights reserved.
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