Abstract
Rhodococcus erytropolis and Pseudomonas sp. rapidly degrade many kinds of polycyclic aromatic hydrocarbon (PAH) compounds such as phenanthrene and phthalate esters such as di(2-ethylhexyl) phthalate, used as plasticizers. These compounds were efficiently removed from wastewater by inoculating viable cells of Rhodococcus erythropolis and Pseudomonas sp. into activated sludge as a biological treatment system. The rapid PCR method and fluorescent antibody techniques were successfully applied for tracing the specified microorganisms, which were inoculated into a mixed culture system. The relationship of microflora to the removal rate of these compounds such as phthalate esters in inoculated biological treatment systems was examined. The metabolic pathway was investigated and enzymes were purified.
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