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Performance and microbial community variations of anaerobic digesters under increasing tetracycline concentrations

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dc.contributor.author Xiong, Yanghui
dc.contributor.author Harb, Moustapha
dc.contributor.author Hong, Pei-Ying
dc.date.accessioned 2019-03-08T14:43:18Z
dc.date.available 2019-03-08T14:43:18Z
dc.date.copyright 2017 en_US
dc.identifier.issn 1432-0614 en_US
dc.identifier.uri http://hdl.handle.net/10725/10154
dc.description.abstract The impact of different concentrations of tetracycline on the performance of anaerobic treatment was evaluated. Results revealed that for all of the tested tetracycline concentrations, no major sustained impact on methane production was observed. Instead, a significant increase in propionic acid was observed in the reactor subjected to the highest concentration of tetracycline (20 mg/L). Microbial community analyses suggest that an alternative methanogenic pathway, specifically that of methanol-utilizing methanogens, may be important for ensuring the stability of methane production in the presence of high tetracycline concentrations. In addition, the accumulation of propionate was due to an increase in volatile fatty acids (VFA)-producing bacteria coupled with a reduction in propionate utilizers. An increase in the abundance of tetracycline resistance genes associated with ribosomal protection proteins was observed after 30 days of exposure to high concentrations of tetracycline, while other targeted resistance genes showed no significant changes. These findings suggest that anaerobic treatment processes can robustly treat wastewater with varying concentrations of antibiotics while also deriving value-added products and minimizing the dissemination of associated antibiotic resistance genes. en_US
dc.language.iso en en_US
dc.title Performance and microbial community variations of anaerobic digesters under increasing tetracycline concentrations en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201806912 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Applied Microbiology and Biotechnology en_US
dc.journal.volume 101 en_US
dc.journal.issue 13 en_US
dc.article.pages 5505-5517 en_US
dc.keywords Anaerobic digestion en_US
dc.keywords Tetracycline en_US
dc.keywords Methanogenic pathway en_US
dc.keywords Propionic acid en_US
dc.keywords Tetracycline resistance genes en_US
dc.identifier.doi http://dx.doi.org/10.1007/s00253-017-8253-1 en_US
dc.identifier.ctation Xiong, Y., Harb, M., & Hong, P. Y. (2017). Performance and microbial community variations of anaerobic digesters under increasing tetracycline concentrations. Applied microbiology and biotechnology, 101(13), 5505-5517. en_US
dc.author.email moustapha.harb@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://link.springer.com/article/10.1007/s00253-017-8253-1 en_US
dc.orcid.id https://orcid.org/0000-0002-1566-987X en_US
dc.author.affiliation Lebanese American University en_US


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