Promising bioprocesses for the efficient removal of antibiotics and antibiotic-resistance genes from urban and hospital wastewaters: Potentialities of aerobic granular systems

Perez-Bou, Lizandra; Gonzalez-Martinez, Alejandro; Gonzalez-Lopez, Jesus; Correa-Galeote, David

doi:10.1016/j.envpol.2023.123115

Cited by 11 publications

(1 citation statement)

References 232 publications

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“…There are various methods for removing antibiotic resistance genes from the river, such as AGS-SBR technology or anaerobic double membrane bioreactor (AnMBR) technology. This can be used in wastewater treatment plants for effective removal of antibiotic resistance genes [44,45]. A variety of modified biochar adsorption, among other methods, can be used for removal of antibiotic resistance genes [46,47].…”

Section: Resistance Gene Pollutionmentioning

confidence: 99%

Evaluating the Ecological Impact of Wastewater Discharges on Microbial and Contaminant Dynamics in Rivers

Jing,

Sajnani,

Zhou

et al. 2024

Water

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This study focused on assessing the impact of pollutants discharged from the Fuxin Meng Wastewater Treatment Plant (FMWWTP) on the microbial communities in the Xi River; specific comparison between upstream and downstream regions was made. Water samples were obtained by mixing morning, midday, and evening sampling at two points: one upstream and one downstream, each 500 m from the FMWWTP outfall. Utilizing metagenomic sequencing in conjunction with measured conventional physical and chemical properties, the research aimed to elucidate differences in microbial community structure, metabolic functions, potential biological contamination, and antibiotic resistance gene prevalence. The findings indicated a notable decrease in microbial diversity downstream compared to upstream; this was influenced primarily by the effluent from FMWWTP. This disparity in microbial diversity was evident at various taxonomic levels, with downstream samples showing higher diversity at the phylum level than at the genus level. Furthermore, downstream microbial populations demonstrated a broader range of metabolic and functional genetic diversity. Interestingly, the abundance of metabolic systems was generally greater downstream, with the notable exception of energy metabolism. This could be attributed to the stress imposed on downstream microorganisms by organic chemicals discharged from the treatment plant, and this prompts an enhanced metabolic decomposition function. The study also uncovered significant levels of potential biological contamination and antibiotic resistance gene pollution. This was more pronounced downstream of FMWWTP. In conclusion, discharge from FMWWTP has a substantial impact on the microbial communities of the Xi River, and this underscores the urgent need to optimize wastewater treatment processes to better comply with environmental quality standards.

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