Comparison of different disinfection processes in the effective removal of antibiotic-resistant bacteria and genes
- Authors
- Oh, Junsik; Salcedo, Dennis Espineli; Medriano, Carl Angelo; Kim, Sungpyo
- Issue Date
- 1-6월-2014
- Publisher
- SCIENCE PRESS
- Keywords
- antibiotic resistance; ozonation; catalyst; oxidants; disinfection
- Citation
- JOURNAL OF ENVIRONMENTAL SCIENCES, v.26, no.6, pp.1238 - 1242
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ENVIRONMENTAL SCIENCES
- Volume
- 26
- Number
- 6
- Start Page
- 1238
- End Page
- 1242
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/98267
- DOI
- 10.1016/S1001-0742(13)60594-X
- ISSN
- 1001-0742
- Abstract
- This study compared three different disinfection processes (chlorination, E-beam, and ozone) and the efficacy of three oxidants (H2O2, S2O8-, and peroxymonosulfate (MPS)) in removing antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in a synthetic wastewater. More than 30 mg/L of chlorine was needed to remove over 90% of ARB and ARG. For the E-beam method, only 1 dose (kGy) was needed to remove ARB and ARG, and ozone could reduce ARB and ARG by more than 90% even at 3 mg/L ozone concentration. In the ozone process, CT values (concentration x time) were compared for ozone alone and combined with different catalysts based on the 2-log removal of ARB and ARG. Ozone treatment yielded a value of 31 and 33 (mg.min)/L for ARB and ARGs respectively. On the other hand, ozone with persulfate yielded 15.9 and 18.5 (mg.min)/L while ozone with monopersulfate yielded a value of 12 and 14.5 (mg.min)/L. This implies that the addition of these catalysts significantly reduces the contact time to achieve a 2-log removal, thus enhancing the process in terms of its kinetics.
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Collections - Graduate School > Department of Environmental Engineering > 1. Journal Articles
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