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Reduction of clarithromycin and sulfamethoxazole-resistant Enterococcus by pilot-scale solar-driven Fenton oxidation.
Sci Total Environ. 2014 Jan 15; 468-469:19-27.ST

Abstract

The presence of pathogenic antibiotic-resistant bacteria in aquatic environments has become a health threat in the last few years. Their presence has increased due to the presence of antibiotics in wastewater effluents, which are not efficiently removed by conventional wastewater treatments. As a result there is a need to study the possible ways of removal of the mixtures of antibiotics present in wastewater effluents and the antibiotic-resistant bacteria, which may also spread the antibiotic resistance genes to other bacterial populations. In this study the degradation of a mixture of antibiotics i.e. sulfamethoxazole and clarithromycin, the disinfection of total enterococci and the removal of those resistant to: a) sulfamethoxazole, b) clarithromycin and c) to both antibiotics have been examined, along with the toxicity of the whole effluent mixture after treatment to the luminescent aquatic bacterium Vibrio fischeri. Solar Fenton treatment (natural solar driven oxidation) using Fenton reagent doses of 50 mg L(-1) of hydrogen peroxide and 5 mg L(-1) of Fe(3+) in a pilot-scale compound parabolic collector plant was used to examine the disinfection and antibiotic resistance removal efficiency in different aqueous matrices, namely distilled water, simulated and real wastewater effluents. There was a faster complete removal of enterococci and of antibiotics in all aqueous matrices by applying solar Fenton when compared to photolytic treatment of the matrices. Sulfamethoxazole was more efficiently degraded than clarithromycin in all three aqueous matrices (95% removal of sulfamethoxazole and 70% removal of clarithromycin in real wastewater). The antibiotic resistance of enterococci towards both antibiotics exhibited a 5-log reduction with solar Fenton in real wastewater effluent. Also after solar Fenton treatment, there were 10 times more antibiotic-resistant enterococci in the presence of sulfamethoxazole than in the presence of clarithromycin. Finally, the toxicity of the treated wastewater to V. fischeri remained very low throughout the treatment time.

Authors+Show Affiliations

Nireas, International Water Research Center, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24012892

Citation

Karaolia, Popi, et al. "Reduction of Clarithromycin and Sulfamethoxazole-resistant Enterococcus By Pilot-scale Solar-driven Fenton Oxidation." The Science of the Total Environment, vol. 468-469, 2014, pp. 19-27.
Karaolia P, Michael I, García-Fernández I, et al. Reduction of clarithromycin and sulfamethoxazole-resistant Enterococcus by pilot-scale solar-driven Fenton oxidation. Sci Total Environ. 2014;468-469:19-27.
Karaolia, P., Michael, I., García-Fernández, I., Agüera, A., Malato, S., Fernández-Ibáñez, P., & Fatta-Kassinos, D. (2014). Reduction of clarithromycin and sulfamethoxazole-resistant Enterococcus by pilot-scale solar-driven Fenton oxidation. The Science of the Total Environment, 468-469, 19-27. https://doi.org/10.1016/j.scitotenv.2013.08.027
Karaolia P, et al. Reduction of Clarithromycin and Sulfamethoxazole-resistant Enterococcus By Pilot-scale Solar-driven Fenton Oxidation. Sci Total Environ. 2014 Jan 15;468-469:19-27. PubMed PMID: 24012892.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reduction of clarithromycin and sulfamethoxazole-resistant Enterococcus by pilot-scale solar-driven Fenton oxidation. AU - Karaolia,Popi, AU - Michael,Irene, AU - García-Fernández,Irene, AU - Agüera,Ana, AU - Malato,Sixto, AU - Fernández-Ibáñez,Pilar, AU - Fatta-Kassinos,Despo, Y1 - 2013/09/04/ PY - 2013/07/30/received PY - 2013/08/09/revised PY - 2013/08/10/accepted PY - 2013/9/10/entrez PY - 2013/9/10/pubmed PY - 2014/7/23/medline KW - Antibiotic resistance KW - Clarithromycin KW - Enterococci KW - Solar Fenton oxidation KW - Sulfamethoxazole SP - 19 EP - 27 JF - The Science of the total environment JO - Sci. Total Environ. VL - 468-469 N2 - The presence of pathogenic antibiotic-resistant bacteria in aquatic environments has become a health threat in the last few years. Their presence has increased due to the presence of antibiotics in wastewater effluents, which are not efficiently removed by conventional wastewater treatments. As a result there is a need to study the possible ways of removal of the mixtures of antibiotics present in wastewater effluents and the antibiotic-resistant bacteria, which may also spread the antibiotic resistance genes to other bacterial populations. In this study the degradation of a mixture of antibiotics i.e. sulfamethoxazole and clarithromycin, the disinfection of total enterococci and the removal of those resistant to: a) sulfamethoxazole, b) clarithromycin and c) to both antibiotics have been examined, along with the toxicity of the whole effluent mixture after treatment to the luminescent aquatic bacterium Vibrio fischeri. Solar Fenton treatment (natural solar driven oxidation) using Fenton reagent doses of 50 mg L(-1) of hydrogen peroxide and 5 mg L(-1) of Fe(3+) in a pilot-scale compound parabolic collector plant was used to examine the disinfection and antibiotic resistance removal efficiency in different aqueous matrices, namely distilled water, simulated and real wastewater effluents. There was a faster complete removal of enterococci and of antibiotics in all aqueous matrices by applying solar Fenton when compared to photolytic treatment of the matrices. Sulfamethoxazole was more efficiently degraded than clarithromycin in all three aqueous matrices (95% removal of sulfamethoxazole and 70% removal of clarithromycin in real wastewater). The antibiotic resistance of enterococci towards both antibiotics exhibited a 5-log reduction with solar Fenton in real wastewater effluent. Also after solar Fenton treatment, there were 10 times more antibiotic-resistant enterococci in the presence of sulfamethoxazole than in the presence of clarithromycin. Finally, the toxicity of the treated wastewater to V. fischeri remained very low throughout the treatment time. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/24012892/Reduction_of_clarithromycin_and_sulfamethoxazole_resistant_Enterococcus_by_pilot_scale_solar_driven_Fenton_oxidation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(13)00941-8 DB - PRIME DP - Unbound Medicine ER -