Earticle

초록

영어

PTA (purified terephthalic acid) wastewater contains various aromatic compounds such as phthalate isomers, p-toluate, benzoate, trimellitic acid, etc. Most of these aromatic compounds can be finally converted into methane biogas under anaerobic condition. In this study, we investigated the anaerobic degradation mechanisms of the aromatic compounds in the PTA wastewater, especially focusing on p-toluate and trimellitic acid of which detailed mechanisms have not yet fully elucidated. We also conducted microbial community analysis using the 16S rDNA gene-based molecular techniques such as denaturing gradient gel electrophoresis and gene cloning in order to identify the microorganisms responsible for their degradation. In the investigation of the anaerobic degradation characteristics of the PTA wastewater, it was revealed that p-toluate and trimellitic acid could be degraded only by a syntrophic culture system. In the community analysis, on the other hand, it was identified that Desulfotomaculum and Pelotomaculum related bacterial populations were responsible for the initial degradation of p-toluate, trimellitic acid and phthalate isomers while Methanothirx, Methanosaeta, and Methanospirillium related methanogens were involved in the final methane production. In addition, the population abundance and distribution of the identified bacteria and archaea within the sludge could be further confirmed using scanning electron microscopy.

키워드

저자

• A Young RYU [ Advanced Environmental Biotechnology Research Center, Department of Chemical Engineering, Pohang University of Science and Technology. ]
• Ji Young KIM [ Advanced Environmental Biotechnology Research Center, Department of Chemical Engineering, Pohang University of Science and Technology. ]
• Min Woo LEE [ Advanced Environmental Biotechnology Research Center, Department of Chemical Engineering, Pohang University of Science and Technology ]
• Jong Moon PARK [ Advanced Environmental Biotechnology Research Center, Department of Chemical Engineering, Pohang University of Science and Technology ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576