Investigation of capability of biological dissociation of naphthalene using soil bacteria in Tabriz refinery
Message:
Abstract:
Background And Objective
Polycyclic aromatic hydrocarbons (PAHs) are important contaminants and carcinogenic. In most cases these contaminants such as anthracene, naphthalene and benzene are released in the wastewater of petroleum and petrochemical industries, which could cause a great damage to environment. In order to remove these substances from soil, some biological methods along with potential of soil's microorganisms are utilized. These microorganisms metabolize the contaminants by using carbon and yield water, carbon dioxide and biomass.
Materials And Methods
In the present study the capability of isolated microorganisms from soil in Tarbiz refinery has been investigated. The above microorganisms were isolated and purified in YGM culture medium. Naphthalene (for model of PAHs) with concentration 1000mgL-1 was prepared in Mueller Hinton Broth and constant amount of bacteria was added and kept for one week at 28 and 120r.p.m. Then the destruction level was evaluated with double beam spectrophotometer.
Results
14 types of bacteria were isolated and in the above concentration 13 effective bacteria were identified and destruction level was achieved from (9.2-57.1) percent.
Conclusion
Regarding to the results it has been showed that this method is capable to remove naphthalene from contaminated oily solid.
Language:
Persian
Published:
فصلنامه زیست فناوری میکروبی, Volume:2 Issue: 4, 2010
Page:
13
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