| Abstract |
| This study compared the effect of a microbial consortium of Methylophilus and methanotrophs with that of the microbial consortium in sewage sludge on the biodegradation of polycyclic aromatic hydrocarbons (PAH) in wastewater. Anthracene and phenanthrene were used as representative types of PAHs. Two microbial consortia were investigated, Methylophilus coexisting with the methanol generated by methanotrophs, and the methane-oxidizing methanotrophs among the methylotrophs isolated and cultured from sewage sludge. Analysis of the cultured community showed that Methylobacter, a type of methanotroph, accounted for 42.3% of the total Methylophilus microbial consortium, whereas Pseudomonas accounted for the vast microbial majority in the activated sludge. Removal of anthracene and phenanthrene by the microbial consortium of Methylobacter and Methylophilus genera was 30% faster than that by activated sludge, and both hydrocarbons were degraded within 14 days. A relatively rapid biodegradation was observed from early stages, especially in the case of phenanthrene compared with that of anthracene. It was confirmed that the methylotroph community of the genera Methylobacter and Methylophilus was more effective for the removal of the two PAHs than activated sludge |
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| Key Words |
| Anthracene, Methanotrophs, Methylophilus, Methylotrophs, Phenanthrene, PHAs, 안트라센, 메탄영향세균, 메틸로필러스, 메틸영양세균, 페난트렌, 다환 방향족탄화수소 |
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