DC Field | Value | Language |
---|---|---|
dc.contributor.author | 유아영 | en_US |
dc.date.accessioned | 2014-12-01T11:46:10Z | - |
dc.date.available | 2014-12-01T11:46:10Z | - |
dc.date.issued | 2010 | en_US |
dc.identifier.other | OAK-2014-00020 | en_US |
dc.identifier.uri | http://postech.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000000542187 | en_US |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/522 | - |
dc.description | Master | en_US |
dc.description.abstract | PTA (purified terephthalic acid) wastewater contains various aromatic compounds such as phthalate isomers, p-toluic acid benzoic acid and acetic acid, which can be converted into valuable biogas under methanogenic condition. Although many full-scale PTA wastewater treatment processes are currently being operated in the world, the involved microbial reactions have not yet fully elucidated especially for the p-toluic acid degradation. In this study, a lab-scale PTA wastewater treatment process consisting of two sequentially-connected UASB (upflow anaerobic sludge blanket) reactors was operated and the microbial community at each stage was investigated by comparing the T-RFLP (terminal restriction fragment length polymorphism) patterns together with the 16S rDNA gene clone libraries complementarily. In the first stage reactor, where most contaminants except p-toluic acid were completely degraded, both Syntrophus and Syntrophobacter species known to have a higher substrate affinity for benzoate were identified to be most predominant. In the second stage reactor, on the other hand, a species belonging to the family of Bacteroidales was most predominant with Syntrophus and Syntrophobacter species diminished. As time goes by, in the second stage reactor mainly treating p-toluic acid, it was further revealed that Pelotomaculum-related group was remarkably increased compared to the result of D100. Considering the substrate availability at each stage, this result strongly suggests that the Pelotomaculum-related groups are closely related to the p-toluic acid degradation. | en_US |
dc.language | eng | en_US |
dc.publisher | 포항공과대학교 | en_US |
dc.rights | BY_NC_ND | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.0/kr | en_US |
dc.title | Microbial Community Analysis of Purified Terephthalic Acid Wastewater Treatment Process Using 16S rDNA-based Method | en_US |
dc.type | Thesis | en_US |
dc.contributor.college | 일반대학원 화학공학과 | en_US |
dc.date.degree | 2010- 2 | en_US |
dc.type.docType | Thesis | - |
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