Removal of cephalexin and erythromycin antibiotics, and their resistance genes, by microalgae-bacteria consortium from wastewater treatment plant secondary effluents

Antibiotics have become a concern in the aquatic environments owing to the potential development of bacterial resistances. Thus, this study evaluated the removal of cephalexin (CEP) and erythromycin (ERY) from a local wastewater treatment plant (WWTP) effluent, mediated by microalgae-bacteria consor...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-12, Vol.28 (47), p.67822-67832
Main Authors: da Silva Rodrigues, Daniel Aparecido, da Cunha, Camila Cristina Rodrigues Ferreira, do Espirito Santo, Daiana Rocha, de Barros, André Luis Corrêa, Pereira, Andressa Rezende, de Queiroz Silva, Silvana, da Fonseca Santiago, Aníbal, de Cássia Franco Afonso, Robson José
Format: Article
Language:English
Subjects:
Algae
Anti-Bacterial Agents
Antibiotics
Aquatic environment
Aquatic microorganisms
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Bacteria - genetics
Cephalexin
Consortia
Earth and Environmental Science
Ecotoxicology
Effluents
Environment
Environmental Chemistry
Environmental Health
Environmental science
Erythromycin
Genes
Microalgae
Research Article
Waste Water - analysis
Waste Water Technology
Wastewater treatment
Wastewater treatment plants
Water Management
Water Pollution Control
Water Purification
Water treatment
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Summary:Antibiotics have become a concern in the aquatic environments owing to the potential development of bacterial resistances. Thus, this study evaluated the removal of cephalexin (CEP) and erythromycin (ERY) from a local wastewater treatment plant (WWTP) effluent, mediated by microalgae-bacteria consortium. Likewise, the removal of correlated antibiotics resistance genes bla TEM and ermB was also assessed. The incubation results showed that the added concentrations of selected antibiotics did not restrain the consortium growth. Moreover, CEP and ERY were almost completely removed after the cultivation period, reaching total removals of 96.54% and 92.38%, respectively. The symbiotic interaction between microalgae and bacteria plays a role in the kinetics removal of CEP and ERY. The abundance of bla TEM and ermB was reduced by 0.56 and 1.75 logs, respectively. Lastly, our results suggest that technology based on natural microalgae-bacteria consortium could be a potential alternative to improve the quality of WWTP effluents.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-021-15351-x