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Erythromycin oxidation and ERY-resistant Escherichia coli inactivation in urban wastewater by sulfate radical-based oxidation process under UV-C irradiation.
Water Res. 2015 Nov 15; 85:346-58.WR

Abstract

This study evaluates the feasibility of UV-C-driven advanced oxidation process induced by sulfate radicals SO4(.)- in degrading erythromycin (ERY) in secondary treated wastewater. The results revealed that 10 mg L(-1) of sodium persulfate (SPS) can result in rapid and complete antibiotic degradation within 90 min of irradiation, while ERY decay exhibited a pseudo-first-order kinetics pattern under the different experimental conditions applied. ERY degradation rate was strongly affected by the chemical composition of the aqueous matrix and it decreased in the order of: ultrapure water (kapp = 0.55 min(-1)) > bottled water (kapp = 0.26 min(-1)) > humic acid solution (kapp = 0.05 min(-1)) > wastewater effluents (kapp = 0.03 min(-1)). Inherent pH conditions (i.e. pH 8) yielded an increased ERY degradation rate, compared to that observed at pH 3 and 5. The contribution of hydroxyl and sulfate radicals (HO. and SO4(.)-) on ERY degradation was found to be ca. 37% and 63%, respectively. Seven transformation products (TPs) were tentatively elucidated during ERY oxidation, with the 14-membered lactone ring of the ERY molecule being intact in all cases. The observed phytotoxicity against the tested plant species can potentially be attributed to the dissolved effluent organic matter (dEfOM) present in wastewater effluents and its associated-oxidation products and not to the TPs generated from the oxidation of ERY. This study evidences the potential use of the UV-C/SPS process in producing a final treated effluent with lower phytotoxicity (<10%) compared to the untreated wastewater. Finally, under the optimum experimental conditions, the UV-C/SPS process resulted in total inactivation of ERY-resistant Escherichia coli within 90 min.

Authors+Show Affiliations

Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus.Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus.Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus.Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus.Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus; Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH 45221-0071, USA.Department of Civil and Environmental Engineering and Nireas-International Water Research Centre, School of Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus. Electronic address: dfatta@ucy.ac.cy.

Pub Type(s)

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

Language

eng

PubMed ID

26360228

Citation

Michael-Kordatou, I, et al. "Erythromycin Oxidation and ERY-resistant Escherichia Coli Inactivation in Urban Wastewater By Sulfate Radical-based Oxidation Process Under UV-C Irradiation." Water Research, vol. 85, 2015, pp. 346-58.
Michael-Kordatou I, Iacovou M, Frontistis Z, et al. Erythromycin oxidation and ERY-resistant Escherichia coli inactivation in urban wastewater by sulfate radical-based oxidation process under UV-C irradiation. Water Res. 2015;85:346-58.
Michael-Kordatou, I., Iacovou, M., Frontistis, Z., Hapeshi, E., Dionysiou, D. D., & Fatta-Kassinos, D. (2015). Erythromycin oxidation and ERY-resistant Escherichia coli inactivation in urban wastewater by sulfate radical-based oxidation process under UV-C irradiation. Water Research, 85, 346-58. https://doi.org/10.1016/j.watres.2015.08.050
Michael-Kordatou I, et al. Erythromycin Oxidation and ERY-resistant Escherichia Coli Inactivation in Urban Wastewater By Sulfate Radical-based Oxidation Process Under UV-C Irradiation. Water Res. 2015 Nov 15;85:346-58. PubMed PMID: 26360228.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Erythromycin oxidation and ERY-resistant Escherichia coli inactivation in urban wastewater by sulfate radical-based oxidation process under UV-C irradiation. AU - Michael-Kordatou,I, AU - Iacovou,M, AU - Frontistis,Z, AU - Hapeshi,E, AU - Dionysiou,D D, AU - Fatta-Kassinos,D, Y1 - 2015/08/31/ PY - 2015/07/21/received PY - 2015/08/26/revised PY - 2015/08/27/accepted PY - 2015/9/12/entrez PY - 2015/9/12/pubmed PY - 2016/7/28/medline KW - Antibiotic-resistant bacteria KW - Erythromycin KW - Phytotoxicity KW - Sulfate radicals KW - Transformation products SP - 346 EP - 58 JF - Water research JO - Water Res VL - 85 N2 - This study evaluates the feasibility of UV-C-driven advanced oxidation process induced by sulfate radicals SO4(.)- in degrading erythromycin (ERY) in secondary treated wastewater. The results revealed that 10 mg L(-1) of sodium persulfate (SPS) can result in rapid and complete antibiotic degradation within 90 min of irradiation, while ERY decay exhibited a pseudo-first-order kinetics pattern under the different experimental conditions applied. ERY degradation rate was strongly affected by the chemical composition of the aqueous matrix and it decreased in the order of: ultrapure water (kapp = 0.55 min(-1)) > bottled water (kapp = 0.26 min(-1)) > humic acid solution (kapp = 0.05 min(-1)) > wastewater effluents (kapp = 0.03 min(-1)). Inherent pH conditions (i.e. pH 8) yielded an increased ERY degradation rate, compared to that observed at pH 3 and 5. The contribution of hydroxyl and sulfate radicals (HO. and SO4(.)-) on ERY degradation was found to be ca. 37% and 63%, respectively. Seven transformation products (TPs) were tentatively elucidated during ERY oxidation, with the 14-membered lactone ring of the ERY molecule being intact in all cases. The observed phytotoxicity against the tested plant species can potentially be attributed to the dissolved effluent organic matter (dEfOM) present in wastewater effluents and its associated-oxidation products and not to the TPs generated from the oxidation of ERY. This study evidences the potential use of the UV-C/SPS process in producing a final treated effluent with lower phytotoxicity (<10%) compared to the untreated wastewater. Finally, under the optimum experimental conditions, the UV-C/SPS process resulted in total inactivation of ERY-resistant Escherichia coli within 90 min. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/26360228/Erythromycin_oxidation_and_ERY_resistant_Escherichia_coli_inactivation_in_urban_wastewater_by_sulfate_radical_based_oxidation_process_under_UV_C_irradiation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(15)30201-3 DB - PRIME DP - Unbound Medicine ER -