Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cej.2022.138234
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dc.titleApplication of UVC and UVC based advanced disinfection technologies for the inactivation of antibiotic resistance genes and elimination of horizontal gene transfer activities: Opportunities and challenges
dc.contributor.authorShayok Ghosh
dc.contributor.authorCHEN YIWEI
dc.contributor.authorJiangyong Hu
dc.date.accessioned2022-12-13T03:34:47Z
dc.date.available2022-12-13T03:34:47Z
dc.date.issued2022-07-22
dc.identifier.citationShayok Ghosh, CHEN YIWEI, Jiangyong Hu (2022-07-22). Application of UVC and UVC based advanced disinfection technologies for the inactivation of antibiotic resistance genes and elimination of horizontal gene transfer activities: Opportunities and challenges. Chemical Engineering Journal 450 (3) : 138234. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cej.2022.138234
dc.identifier.issn1385-8947
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/235520
dc.description.abstractExtensive application of antibiotics in the last few decades has promoted selective pressure to disseminate antibiotic resistance in the aquatic environment. Antibiotic-resistant genes (ARGs) and bacteria (ARB) were detected in wastewater, effluent from wastewater treatment plants (WWTPs), surface water, and finished water from drinking water treatment plants (DWTPs), and even in tap-water. Hence, the spread of antibiotic resistance has become a threat to public health. Traditional low-pressure UV lamps (LP UV) removed ARGs, but the fluences required to deactivate ARGs were very high. The efficiency of LP UV to diminish ARGs was more strongly correlated with adjacent thymine number rather than amplicon length since cyclobutane pyrimidine dimers (CPDs) are the significant lesions generated due to UVC-caused damage to DNA. Co-exposure of LP UV with other radicals in the UV based advanced oxidation processes (AOPs) exhibited some improvement in reducing concentrations of ARGs, specifically extracellular ARGs (eARGs). However, the exhaustion of radicals by various cellular components, such as cell membrane, cell wall, and cytoplasmic protein, has limited the widespread application of UV based AOPs. In LP UV-based AOPs, DNA damage induced by LP UV was identified as a major mechanism for eliminating ARG transformation. UVC light-emitting diodes (UVC LEDs) are increasingly being investigated for disinfection performances. 265 nm LED has shown better performance in controlling antibiotic resistance than 285 nm. Further researches are required to assess the performances of UVC LEDs and UVC LEDs based AOPs to deactivate ARGs.
dc.typeArticle
dc.contributor.departmentNUS ENVIRONMENTAL RESEARCH INSTITUTE
dc.description.doi10.1016/j.cej.2022.138234
dc.description.sourcetitleChemical Engineering Journal
dc.description.volume450
dc.description.issue3
dc.description.page138234
dc.published.statePublished
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