List of Articles هیدروکربن های آروماتیک چندحلقه

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  1 - Leaching Assessment of PAHs from Oil Contaminated Sites
  Akbar Baghvand Ali Daryabeigi Zand Ali Vosoogh
  Introduction: Polycyclic aromatic hydrocarbons are in amongst of the most important environmentalpollutants. Their leaching from soil into groundwater is one of the most important environmentalconcerns. Considering the high volume of activities in oil industry, many sit More

  Introduction: Polycyclic aromatic hydrocarbons are in amongst of the most important environmentalpollutants. Their leaching from soil into groundwater is one of the most important environmentalconcerns. Considering the high volume of activities in oil industry, many sites have beencontaminated with oil compounds in Iran. Since soil remediation costs are very high, making adecision about remediation or not remediation of the oil polluted soils needs a careful assessment.Material & Methods: Column leaching test was applied in the current research as a modern andeffective tool to predict leaching of PAHs from soil. In order to do this procedure, the contaminatedsoil from south of Tehran city (near the oil refractory) were prepared. Then, dried in the air and sievedfrom 2 mm. The material of soil was silt and clay; also had a 1.81 percent organic carbon. The testswere done in glass column with 600 cm3 capacity (6 cm diameter, 21 cm high).Results & Discussion: Results showed that only a small part of available PAHs in solid phase (soil)leached into water and high concentration of PAHs in the solid phase dose not necessary imply seriousgroundwater contamination risk and significant amount of PAHs may stay in the soil for a long time. Manuscript profile
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  2 - Isolation and characterization Anthracene degrading Gram negative bacteria from water and sediment contaminanted by these compounds
  Farshid Kafilzade Somaye behzadi shahrbabak
  Polycyclic aromatic hydrocarbons (PAHs)form a group of compound compused of two or more fused aromatic rings that are carcinogen and mutagenic for human and animals. thay are formed by the incomplete combustion of organic matter and fossil fuel. PAHs are released into t More

  Polycyclic aromatic hydrocarbons (PAHs)form a group of compound compused of two or more fused aromatic rings that are carcinogen and mutagenic for human and animals. thay are formed by the incomplete combustion of organic matter and fossil fuel. PAHs are released into the environment from way waste water of factories producting Coke,oil,s refineries and industrials that use from very high temperatures,also these compounds are primary substance producting cosmetics,polymers,high explosive,fertilizer,colours and etc,that transfer to environment when used. Today biodegradation of PAHs by microorganisms is the best way for fending these contamination and because bacteria have variety enzymes, hence thay are the best microorganism. Anthracene is tricyclic aromatic hydrocarbon, solid and Phenanthrene isomer. Anthracene is major source colours such Anthrakinon and Alizarin. Anthracene is formed by the incomplete combustion of fossil fuels. In this paper,we isolate anthracene degrading Gram negative bacteria from Maharlu lake.samples of lake,s sediments and water were collected from four sites in Maharlu lake. Samples filtered and cultured in Mineral medium that include inorganic compound, trace element and anthracene. Post of sequential cultures in specialized medium and employed biochemical tests, isolated gram negative bacteria and identified species and genus.The bacteria include Pseudomonas, Vibrio, Nocardia, Aeromonas, Mycobacterium isolated and characterized as anthracene degrading bacteria from lake.Among these bacteria the most bacteria was in Khoshk river,s estury and the least was in lake,s center.Whereas Pseudomonas have the most dispersal,can used as anthracene degrading indicator species. Manuscript profile