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type: UserItem
resource: Removal of pharmaceuticals through UV-C/Performic acid advanced oxidation process: Kinetics and identification of reactive species
access date: 2025-07-04 07:41:44
repository: ScienceDirect
tagged: AutoTag
  label: /unread
tagged: AutoTag
  label: Peracetic acid
tagged: AutoTag
  label: Peracid
tagged: AutoTag
  label: Transformation products
tagged: AutoTag
  label: UV-C photolysis
tagged: AutoTag
  label: Wastewater treatment

Removal of pharmaceuticals through UV-C/Performic acid advanced oxidation process: Kinetics and identification of reactive species
type: AcademicArticle
abstract: Performic acid (PFA), widely recognized for its disinfectant properties in wastewater, shows selective and limited reactivity in oxidizing micropollutants. This study investigates the activation of PFA through UV-C photolysis to generate an advanced oxidation process (UV-C/PFA) and enhance the degradation of six pharmaceuticals: lidocaine, furosemide, sulfamethoxazole, diclofenac, acetaminophen, and carbamazepine. The synergy of UV-C photolysis with PFA enhances the removal of PFA-persistent pharmaceuticals. For instance, diclofenac, acetaminophen, and sulfamethoxazole, initially unreactive with PFA, were entirely degraded within ten minutes under UV-C/PFA in a phosphate buffer solution. This increased reactivity results from generated reactive species like hydroxyl (HO•), peroxyl (R–O•) radicals and singlet oxygen (1O2), confirmed by electron paramagnetic resonance, with HO• primarily originating from the background H2O2 present in the PFA solution. While UV-C/PFA produced fewer HO• than UV-C/H2O2, it has distinct advantages through the selective action of 1O2 and R–O• in degrading some pharmaceuticals. 1O2 was also detected in the PFA solution and could explain its selective reactivity, especially with compounds containing reduced sulfur or tertiary amine groups. Overall, UV-C/PFA yields transformation products of lower molar mass compared to PFA, thus potentially increasing mineralization. In wastewater effluent, UV-C/PFA improved pharmaceutical degradation, though scavenging effects by wastewater constituents reduced removal rates.
pages: 139016
doi: 10.1016/j.jhazmat.2025.139016
short title: Removal of pharmaceuticals through UV-C/Performic acid advanced oxidation process
creator: Person
author list: Person
is part of: Issue
  date: 2025-09-05
  volume: 495
  is part of: Journal of Hazardous Materials
    type: Journal
    short title: Journal of Hazardous Materials
    issn: 0304-3894

Person
given name: Christelle
surname: Nabintu Kajoka

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given name: Stephan
surname: Brosillon

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given name: Corine
surname: Reibel

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given name: Yacine Khadija
surname: Diop

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given name: Marcos
surname: Oliveira

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given name: Vincent
surname: Rocher

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surname: Chebbo

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given name: Johnny
surname: Gasperi

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given name: Julien
surname: Le Roux