Investigating the Fate of Tetracycline in an Anaerobic Membrane Bioreactor and Its Effects on Antibiotic Resistance Gene Proliferation from Different Membrane Types

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dc.contributor.author Zeeb, Reem
dc.date.accessioned 2023-03-16T09:56:19Z
dc.date.available 2023-03-16T09:56:19Z
dc.date.copyright 2022 en_US
dc.date.issued 2022-12-20
dc.identifier.uri http://hdl.handle.net/10725/14573
dc.description.abstract As the concern of fresh and clean water scarcity is raised worldwide, the necessity of water reuse stands out. In this sense, the AnMBR, an advanced wastewater treatment technology combining the advantages of the MBR and anaerobic processes, has gained much attention in the past years as it produces high quality effluent from an energy efficient mechanism. Even though the removal of emerging microbial contaminants generally and antibiotics specifically from wastewater has been studied, the reduction of ARGs and tetracycline, which is one of the most used antibiotics worldwide, hasn’t been explicitly looked into using AnMBRs during treatment of real municipal wastewaters. Hence, this research, composed of a pre-tetracycline addition phase and a tetracycline addition phase, aimed to examine the effect of tetracycline continuously fed at a concentration of 300 μg/L on the performance of a lab-scale AnMBR as well as to evaluate the removal efficiency of tetracycline via the AnMBR system while looking into the attribution of each removal mechanism. It also studied the proliferation of iARGs and eARGs in the effluents of three externally connected membranes: two MFs and one UF. The results showed that a slight and quickly recoverable disruption was imposed by tetracycline on the system. Tetracycline was reduced at an efficiency > 91% for the three effluents with adsorption to sludge being the primary mechanism of removal even though notable degradation averaged to 38 % was recorded. The contribution of adsorption of tetracycline to the biofilm layer developed on each of the three membranes to removal was negligible. For ARGs, an increase in the abundance of tet-associated iARGs, with variation depending on the membrane pore size, was detected in the effluent, in opposition to tet-associated eARGs and non-tet ARGs which did not show an interpretable response to tetracycline. en_US
dc.language.iso en en_US
dc.subject Sewage -- Purification -- Anaerobic treatment en_US
dc.subject Membrane reactors en_US
dc.subject Drug resistance in microorganisms en_US
dc.subject Tetracyclines en_US
dc.subject Lebanese American University -- Dissertations en_US
dc.subject Dissertations, Academic en_US
dc.title Investigating the Fate of Tetracycline in an Anaerobic Membrane Bioreactor and Its Effects on Antibiotic Resistance Gene Proliferation from Different Membrane Types en_US
dc.type Thesis en_US
dc.term.submitted Fall en_US
dc.author.degree MS in Civil And Environmental Engineering en_US
dc.author.school SOE en_US
dc.author.idnumber 201600281 en_US
dc.author.commembers Akoury, Elias
dc.author.commembers Wazne, Mahmoud
dc.author.department Civil Engineering en_US
dc.description.physdesc 1 online resource (xv, 111 leaves): ill. (some col.) en_US
dc.author.advisor Harb, Moustapha
dc.keywords Pore size en_US
dc.keywords Intracellular en_US
dc.keywords Extracellular en_US
dc.keywords Adsorption en_US
dc.keywords Biodegradation en_US
dc.description.bibliographiccitations Includes bibliographical references (leaves 86-106) en_US
dc.identifier.doi https://doi.org/10.26756/th.2022.526
dc.author.email reem.deeb01@lau.edu en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/thesis.php en_US
dc.publisher.institution Lebanese American University en_US
dc.author.affiliation Lebanese American University en_US

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