Biodegradation of polycyclic aromatic hydrocarbons (PAHs) in crude oil, by a white rot fungus, Pleurotus ostreatus sp., in broth culture was investigated. It was found that the biomass of the organism increased with the increase of PAHs concentration in the cultures. In the cultures with 25.99, 49.01 and 80.05 mg.kg-1 PAHs, the degradation increased with the PAHs of low molecular weight concent...

a fi zr-based catalyst of bis[n-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(iv) dichloride was prepared and used for polymerization of ethylene. the effects of reaction conditions on the polymerization were examined in detail. the increase in ethylene pressure and rise in polymerization temperature up to 35 oc were favorable for catalyst/mao to raise the catalytic activity as...

The article describes the catalytic cracking of heavy oil residue in presence a finely dispersed catalyst. It was determined that processing high molecular weight hydrocarbons, catalysts are effective, which uniformly distributed volume raw materials and introduced into technological process form small particles. Coke tar mainly consists 27.00 wt.% asphaltenes, 60.00 polyaromatic hydrocarbons h...

  Polycyclic aromatic hydrocarbons (PAHs) are a class of complex substances that are produced during incomplete combustion of fossil fuels. PAHs are known to be persistent pollutants which can remain in nature for years. In 1991 during the first Persian Gulf War south west part of Iran was contaminated heavily. This study was undertaken to see if the PAHs can be traceable in animal tissues many...

polycyclic aromatic hydrocarbons (pahs) are a class of complex substances that are produced during incomplete combustion of fossil fuels. pahs are known to be persistent pollutants which can remain in nature for years. in 1991 during the first persian gulf war south west part of iran was contaminated heavily. this study was undertaken to see if the pahs can be traceable in animal tissues many y...