Moving from the traditional paradigm of pathogen inactivation to controlling antibiotic resistance in water - Role of ultraviolet irradiation

Umar, M, Roddick, F and Fan, L 2018, 'Moving from the traditional paradigm of pathogen inactivation to controlling antibiotic resistance in water - Role of ultraviolet irradiation', Science of the Total Environment, vol. 662, pp. 923-939.


Document type: Journal Article
Collection: Journal Articles

Title Moving from the traditional paradigm of pathogen inactivation to controlling antibiotic resistance in water - Role of ultraviolet irradiation
Author(s) Umar, M
Roddick, F
Fan, L
Year 2018
Journal name Science of the Total Environment
Volume number 662
Start page 923
End page 939
Total pages 17
Publisher Elsevier BV
Abstract Ultraviolet (UV) irradiation has proven an effective tool for inactivating microorganisms in water. There is, however, a need to look at disinfection from a different perspective because microbial inactivation alone may not be sufficient to ensure the microbiological safety of the treated water since pathogenic genes may still be present, even after disinfection. Antibiotic resistance genes (ARGs) are of a particular concern since they enable microorganisms to become resistant to antibiotics. UV irradiation has been widely used for disinfection and more recently for destroying ARGs. While UV lamps remain the principal technology to achieve this objective, UV light emitting diodes (UV-LEDs) are novel sources of UV irradiation and have increasingly been reported in lab-scale investigations as a potential alternative. This review discusses the current state of the applications of UV technology for controlling antibiotic resistance during water and wastewater treatment. Since UV-LEDs possess several attractive advantages over conventional UV lamps, the impact of UV-LED characteristics (single vs combined wavelengths, and operational parameters such as periodic or pulsed and continuous irradiation, pulse repetition frequencies, duty cycle), type of organism, and fluence response, are critically reviewed with a view to highlighting the research needs for addressing future disinfection challenges. The energy efficiency of the reported UV processes is also evaluated with a focus on relating the findings to disinfection efficacy. The greater experience with UV lamps could be useful for investigating UV-LEDs for similar applications (i.e., antibiotic resistance control), and hence identification of future research directions.
Subject Water Treatment Processes
Wastewater Treatment Processes
Keyword(s) Advanced oxidation processes
Antibiotic resistance
Antibiotic resistance genes
Disinfection
UV lamps
UV-LED
DOI - identifier 10.1016/j.scitotenv.2019.01.289
Copyright notice © 2019 Elsevier B.V.
ISSN 0048-9697
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