Abstract
Among all environmental contaminations, industrial oil is one of the major pollutants of soil, water, and air. There are different chemical, physical, and biological methods to remove all types of oil pollutions. One of the common biological methods is to utilize the microorganisms like yeast, fungi or bacteria. Previous studies concerning the biodegradation of an aromatic compound in industrial waste water by Aspergillus niger have been reported. In this study, we tried to identify an oil-derived microorganism and evaluate its efficacy on self-removal of industrial oil. Firstly, the strain of isolated fungus from various bulks of used oil was defined via colonial identification and DNA sequencing. Secondly, bioremoval activity of defined fungus (Penicillium commune) was evaluated using gas chromatography–mass spectrometry. The optimum conditions in biological elimination of oil including the incubation time, pH level of culture, and amount of reagents were determined. In the best condition, a removal rate of 95.4 % was obtained.
Highlights
Oil pollutants such as lubricants, cutting fluids, and other types of heavy products such as tar, grease, crude oil, and diesel oil as well as light hydrocarbons are considered as aIn our research, the biodegradation of 1-naphthol in industrial waste water was examined
Fugal strains were isolated from oilcontaminated sites of Arak refinery (Iran) and their growth ability was checked in potato dextrose agar media containing 0–10 % v/v crude oil, the activity of three enzymes was evaluated in the fungal colonies and bioremediation ability of the fungi was checked in the experimental pots containing 3 kg sterilized soil and different concentrations of petroleum (0–10 % w/w) (Mohsenzadeh et al 2012)
A number of natural biodegradable sorbents have been found as one of the most cost-effective and capable means for the oil spill cleanup, and a number of works have been studied for utilizing these materials in the removal of oil spill, e.g., barley straw (Husseien et al 2009), raw sugarcane bagasse in different particle sizes was used for the sorption of layer of crude oil from surface of sea water (Behnood et al 2013)
Summary
Oil pollutants such as lubricants, cutting fluids, and other types of heavy products such as tar, grease, crude oil, and diesel oil as well as light hydrocarbons are considered as aIn our research, the biodegradation of 1-naphthol in industrial waste water was examined. We separated Aspergillus niger in the soil of industrial waste water and its biodegradation by the same fungi was further investigated by us (Esmaeili and Fazeli 2012). The amazing effects of fungi on removal of pollutants or their transformation to harmless or useful products have been reported. In this process, many toxic components in oil industry wastewater can be changed to novel substances applicable in biotechnological procedures (Esmaeili and Fazeli 2012). These oils include hydrogen and carbon which forms numerous compounds called hydrocarbons that are not heavy enough
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