Enhanced Fenton-like oxidation (Vis/Fe(III)/Peroxydisulfate): The role of iron species and the Fe(III)-LVF complex in levofloxacin degradation

Afang Wang; Yang Shi; Yang Liu; Wei Li; Heng Zhang; Xiaoqiang Dai; Li Luo; Gang Yao; Bo Lai

doi:10.1016/j.jhazmat.2023.132755

Enhanced Fenton-like oxidation (Vis/Fe(III)/Peroxydisulfate): The role of iron species and the Fe(III)-LVF complex in levofloxacin degradation

J Hazard Mater. 2024 Jan 15:462:132755. doi: 10.1016/j.jhazmat.2023.132755. Epub 2023 Oct 11.

Authors

Afang Wang¹, Yang Shi², Yang Liu³, Wei Li⁴, Heng Zhang¹, Xiaoqiang Dai⁵, Li Luo⁵, Gang Yao¹, Bo Lai⁶

Affiliations

¹ State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China.
² State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China. Electronic address: siyang@scu.edu.cn.
³ State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China. Electronic address: liuyang_scu@scu.edu.cn.
⁴ Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; China MCC5 Group Corp., Ltd, Chengdu 610063.
⁵ China MCC5 Group Corp., Ltd, Chengdu 610063.
⁶ State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, Chengdu 610041, China.

PMID: 37839379
DOI: 10.1016/j.jhazmat.2023.132755

Abstract

Traditional Fenton and Fenton-like processes are affected by the sluggish kinetics of Fe(II) regeneration and Fe(III) accumulation. This research revealed that the degradation efficiency of pollutants was significantly increased by adding Fe(III) to the Vis/PS system. A mechanism is proposed in which photosensitivity pollutants can boost Fe(III) to produce Fe(II) under visible light irradiation. Intriguingly, Fe(III) rapidly combines with LVF in aqueous environments to form Fe(III)-LVF complexes. This research confirms that Fe(III)-pollutant complexes are generated. The proportion of complexes are calculated using mathematical models. Furthermore, the production of Fe(IV) is verified in the Vis/PS/Fe(III) system, which also plays a vital role in boosting LVF degradation. Overall, this study provides comprehensive insights into the degradation mechanism of micropollutants, involving hydroxyl radical (OH∙), Fe(IV), and Fe(III)-LVF complexes, providing an efficient and green strategy for contaminant removal during wastewater treatment.

Keywords: Fenton-like system; Ferric iron; Levofloxacin; Persulfate; Photosensitized transformation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Environmental Pollutants*
Ferric Compounds
Ferrous Compounds
Hydrogen Peroxide
Iron
Levofloxacin
Oxidation-Reduction
Water Pollutants, Chemical*

Substances

Iron
Levofloxacin
Hydrogen Peroxide
Ferrous Compounds
Environmental Pollutants
Ferric Compounds
Water Pollutants, Chemical