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Polycyclic aromatic hydrocarbons (PAHs) containing more than three rings are mainly less biodegradable. Therefore, the isolation of PAHs-degrading bacteria is of great importance to be augmented for bioremediation of polluted sites with PAHs. PAHs-degrading bacteria were isolated from contaminated sites of an oil refinery. The strains were confirmed by biochemical tests and 16S rRNA, which were Stenotrophomonas maltophilia (two strains), Thermomonas koreensis (three strains), Achromobacter (two strains), Pseudomonas stutzeri (one strain), Azospirillum brasilense (one strain) and Brevibacillus brevis (one strain). The isolate strains can be applied as a bacterial consortium for purification of polluted soil with high levels of PAHs. [ABSTRACT FROM AUTHOR]

This present study aims to reveal the performance of Ti/Ni-Sb-SnO2 in limiting oxygen evolution and increasing electrochemical O3 production (EOP) and phenol removal. First, the effect of important variables such as current density (CD), charge passed and electrolyte type on the modified electrodes was investigated. Then, phenol removal by Ti/Ni-Sb-SnO2 was studied using the effect of CD, retention time and phenol concentration. The results revealed that for building the electrodes of Ti/Ni-Sb-SnO2, CD of 3.9 mA/cm² and passed charge of 180 mC were obtained. The performance of ozone generation in HClO4 is by far more than that of H3PO4, H2SO4 and HCl. At the initial concentration of 1, 3, 6 and 10 mM, phenol was decomposed by 99.9% approximately in current densities of 61.5, 76.9, 92.3 and 123.1 mA/cm² and contact time of 150, 250, 350, and 400 minutes. respectively. [ABSTRACT FROM AUTHOR]