Advanced oxidation catalyzed by activated carbon: reduction of antibiotic resistance in wastewater

Authors

DOI:

https://doi.org/10.33936/revbasdelaciencia.v10i2.7101

Keywords:

wastewater, treatment, antibiotic resistance, microorganisms, antibiotics

Abstract

This study evaluated the efficacy of advanced oxidation processes (AOP) catalyzed with activated carbon (AC) in reducing microbial load and inhibiting antibiotic resistance in wastewater. Samples were collected from an oxidation lagoon in Calceta, Manabí, following Ecuadorian standards. Physicochemical parameters such as turbidity, pH, total solids (TS), TDS, and electrical conductivity (EC) were analyzed, and the presence of coliforms was assessed. The results showed that ferric chloride (FeCl₃) was effective in reducing turbidity between 100-1300 ppm, although higher doses increased TS and EC. AOPs with H₂O₂, O₃, and AC achieved complete coliform removal and a notable reduction in turbidity. Additionally, oxidative treatments reduced bacterial resistance to antibiotics such as amikacin and levofloxacin. These findings highlight the potential of AOPs as a tertiary treatment technology in wastewater, though optimizing doses and combining with other processes is suggested to improve the elimination of resistant bacteria.

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Published

2025-07-11

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