Effect of UV-A-assisted iron-based and UV-C-driven oxidation processes on organic matter and antibiotic resistance removal in tertiary treated urban wastewater

Idil Arslan-Alaton; Ayten Karatas; Öznur Pehlivan; Olga Koba Ucun; Tugba Ölmez-Hancı

doi:10.1016/j.cattod.2020.02.037

Effect of UV-A-assisted iron-based and UV-C-driven oxidation processes on organic matter and antibiotic resistance removal in tertiary treated urban wastewater

Idil Arslan-Alaton^*, Ayten Karatas, Öznur Pehlivan, Olga Koba Ucun, Tugba Ölmez-Hancı

^*Corresponding author for this work

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Antibiotic resistance is frequently being observed in treated urban effluents as an alarming wastewater treatment issue and health risk. The potential of UV-A-assisted iron-based and UV-C-driven advanced oxidation processes to inactivate the ABR E. coli J53 strain bacteria and its aphA (kanamycin resistance gene) and tetA (tetracycline resistance gene) located on the plasmid RP4 was investigated in real tertiary treated urban wastewater. Besides inactivation performance, dissolved organic carbon (DOC) removals were also followed to evaluate the mineralization degree that could be achieved by the proposed photochemical/photocatalytic treatment systems. For UV-A-assisted Fenton/Fenton-like processes, antibiotic resistance and DOC removals (≈20 %) were rather limited. UV-C activation of the oxidants hydrogen peroxide (HP), persulfate (PS) and peroxymonosulfate (PMS) were the key photochemical advanced oxidation processes for efficient inactivation of multi-resistant E. coli bacteria (>6.5-log reduction) and gene copies (>3.0-log reduction) as well. Besides, 31 %, 40 % and 59 % DOC removals were achieved at a UV dose of 0.45 W/m² for 2.0 mM HP-, PMS- and PS/UV-C treatments, respectively.

Original language	English
Pages (from-to)	152-158
Number of pages	7
Journal	Catalysis Today
Volume	361
DOIs	https://doi.org/10.1016/j.cattod.2020.02.037
Publication status	Published - 1 Feb 2021

Bibliographical note

Publisher Copyright:
© 2020

Funding

The authors are thankful to Istanbul Technical University under Project Nr. MGA-2018-41117.

Funders	Funder number
Istanbul Teknik Üniversitesi	MGA-2018-41117

Keywords

Antibiotic resistance
Disinfection
Photochemical advanced oxidation processes
Tertiary treated urban wastewater
UV-C activation of oxidants

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cattod.2020.02.037

Cite this

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title = "Effect of UV-A-assisted iron-based and UV-C-driven oxidation processes on organic matter and antibiotic resistance removal in tertiary treated urban wastewater",

abstract = "Antibiotic resistance is frequently being observed in treated urban effluents as an alarming wastewater treatment issue and health risk. The potential of UV-A-assisted iron-based and UV-C-driven advanced oxidation processes to inactivate the ABR E. coli J53 strain bacteria and its aphA (kanamycin resistance gene) and tetA (tetracycline resistance gene) located on the plasmid RP4 was investigated in real tertiary treated urban wastewater. Besides inactivation performance, dissolved organic carbon (DOC) removals were also followed to evaluate the mineralization degree that could be achieved by the proposed photochemical/photocatalytic treatment systems. For UV-A-assisted Fenton/Fenton-like processes, antibiotic resistance and DOC removals (≈20 %) were rather limited. UV-C activation of the oxidants hydrogen peroxide (HP), persulfate (PS) and peroxymonosulfate (PMS) were the key photochemical advanced oxidation processes for efficient inactivation of multi-resistant E. coli bacteria (>6.5-log reduction) and gene copies (>3.0-log reduction) as well. Besides, 31 %, 40 % and 59 % DOC removals were achieved at a UV dose of 0.45 W/m2 for 2.0 mM HP-, PMS- and PS/UV-C treatments, respectively.",

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AU - Arslan-Alaton, Idil

AU - Karatas, Ayten

AU - Pehlivan, Öznur

AU - Koba Ucun, Olga

AU - Ölmez-Hancı, Tugba

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AB - Antibiotic resistance is frequently being observed in treated urban effluents as an alarming wastewater treatment issue and health risk. The potential of UV-A-assisted iron-based and UV-C-driven advanced oxidation processes to inactivate the ABR E. coli J53 strain bacteria and its aphA (kanamycin resistance gene) and tetA (tetracycline resistance gene) located on the plasmid RP4 was investigated in real tertiary treated urban wastewater. Besides inactivation performance, dissolved organic carbon (DOC) removals were also followed to evaluate the mineralization degree that could be achieved by the proposed photochemical/photocatalytic treatment systems. For UV-A-assisted Fenton/Fenton-like processes, antibiotic resistance and DOC removals (≈20 %) were rather limited. UV-C activation of the oxidants hydrogen peroxide (HP), persulfate (PS) and peroxymonosulfate (PMS) were the key photochemical advanced oxidation processes for efficient inactivation of multi-resistant E. coli bacteria (>6.5-log reduction) and gene copies (>3.0-log reduction) as well. Besides, 31 %, 40 % and 59 % DOC removals were achieved at a UV dose of 0.45 W/m2 for 2.0 mM HP-, PMS- and PS/UV-C treatments, respectively.

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Effect of UV-A-assisted iron-based and UV-C-driven oxidation processes on organic matter and antibiotic resistance removal in tertiary treated urban wastewater

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

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