Multicenter Postgraduation Program in Chemistry - Minas Gerais, Federal University of Ouro Preto (UFOP), Ouro Preto, Minas Gerais, 35450-000, Brazil.
Industrial Chemistry, Federal University of Ouro Preto (UFOP), Ouro Preto, Minas Gerais, 35450-000, Brazil.
Environ Sci Pollut Res Int. 2021 Dec;28(47):67822-67832. doi: 10.1007/s11356-021-15351-x. Epub 2021 Jul 15.
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 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 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.
由于细菌耐药性的潜在发展，抗生素在水生环境中引起了关注。因此，本研究评估了微藻-细菌共生体对当地污水处理厂（WWTP）出水的头孢氨苄（CEP）和红霉素（ERY）的去除效果，同时还评估了相关抗生素耐药基因 bla 和 ermB 的去除效果。孵育结果表明，所选抗生素的添加浓度并未抑制共生体的生长。此外，培养期结束后，CEP 和 ERY 几乎被完全去除，总去除率分别达到 96.54%和 92.38%。微藻和细菌之间的共生相互作用在 CEP 和 ERY 的动力学去除中发挥了作用。bla 和 ermB 的丰度分别减少了 0.56 和 1.75 个对数。最后，我们的结果表明，基于天然微藻-细菌共生体的技术可能是改善 WWTP 出水质量的一种潜在替代方法。
