Mechanistic evaluation and reaction pathway of UV photo-assisted Fenton-like degradation of progesterone in water and wastewater

Augustine Ifelebuegu, Justina Ukpebor, Blossmom Nzeribe-Nwedo

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The mechanisms and reaction pathway of UV photo-assisted Fenton-like degradation of progesterone in water and wastewater were investigated. The reaction followed the pseudo-first-order kinetics for both the dark Fenton-like and UV photo-Fenton-like processes. The reaction kinetics of the UV photo-assisted process improved with the presence of humic acid (HA) in wastewater, due to the formation of Fe(III)-HA complexes which enhanced Fe(II) production by a ligand-to-metal charge transfer. The UV photo-assisted process reduced the amount of ferric required to completely degrade progesterone by 60 % and lowered the activation energy to 42 kJ/mol compared to 104 kJ/mol for the dark Fenton-like process. Complete degradation of progesterone was achieved through a multi-step process involving several intermediate compounds.
Original languageEnglish
Article number13
Pages (from-to)2757–2766
Number of pages10
JournalInternational Journal of Environmental Science and Technology
Volume13
Issue number12
Early online date19 Sep 2016
DOIs
Publication statusPublished - Dec 2016

Bibliographical note

This paper is not available on the repository. There is an embargo period of 12 months until 19 September 2017
The final publication is available at link.springer.com

Keywords

  • Degradation
  • Endocrine disruptors
  • Photo-Fenton
  • Progesterone
  • Ultraviolet irradiation

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