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Photodegradation of pharmaceuticals and personal care products during UV and UV/H2O2 treatments
Abstract
Photodegradation characteristics of pharmaceuticals and personal care products (PPCPs) and the effectiveness of H(2)O(2) addition for PPCPs photodegradation during UV treatment were examined in this study. Average k (1st order rate constant) value for all the PPCPs investigated increased by a factor of 1.3 by H(2)O(2) addition during UV treatment using biologically treated water (TW) spiked with the 30 PPCPs. Therefore, the effectiveness of H(2)O(2) addition for PPCPs removal during UV treatment in real wastewater treatment process was expected. It could be also known that H(2)O(2) addition would improve photodegradation rates of PPCPs highly resistant for UV treatment such as DEET, ethenzamide and theophylline. UV dose required for 90% degradation of each PPCP was calculated from k values obtained in UV and UV/H(2)O(2) treatment experiments using TW spiked with 30 PPCPs. For UV treatment, UV dose required for degrading each PPCP by 90% of initial concentration ranged from 38 mJ cm(-2) to 5644 mJ cm(-2), indicating that most of PPCPs will not be removed sufficiently in UV disinfection process in wastewater treatment plant. For UV/H(2)O(2) treatment, all the PPCPs except seven PPCPs including cyclophosphamide and 2-QCA were degraded by more than 90% by UV irradiation for 30 min (UV dose: 691 mJ cm(-2)), indicating that H(2)O(2) addition during UV treatment will be highly effective for improving the degradation of PPCPs by UV, even though much higher UV dose is still necessary comparing to for UV disinfection.
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“In this process, the photoirradiation can break the peroxobond (-O-O-) in the oxidants, such as H2O2, persulfates, and ozone (Equation (6)) [84-87].”
From Advanced Oxidation Processes for Degradation of Water Pollutants—Ambivalent Impact of Carbonate Species: A Review (2023) · cites this paper as [85]
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Cites
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Metadata
- Authors
- Kim, I., Yamashita, N., & Tanaka, H.
- Affiliations
- Kyoto University (JP)
- Corresponding author
- Kim, Ilho
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2009-10
- Volume
- 77
- Issue
- 4
- Pages
- 518-525
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W2046758055
- Cited by
- 266
- References
- 19
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 6 · 2023: 13 · 2022: 14 · 2021: 23 · 2020: 23 · 2019: 19 · 2018: 16 · 2017: 27 · 2016: 22 · 2015: 18 · 2014: 15 · 2013: 21 · 2012: 19
- FWCI
- 14.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemosphere (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Environment
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
- Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
- Keywords
- pharmaceuticals and personal care products, photodegradation, ultraviolet disinfection, UV/H2O2 treatment, hydrogen peroxide, biologically treated wastewater, degradation rate constant, UV dose, DEET, ethenzamide, theophylline, cyclophosphamide, wastewater treatment
- MeSH terms
- Cosmetics, Pharmaceutical Preparations, Humans, Hydrogen Peroxide, Photolysis, Ultraviolet Rays
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