Enhanced degradation of carbamazepine in FeOCl based Photo-Fenton reaction

Shaobin Sun, Hong Yao, Wanyi Fu, Fang Liu, Xuewen Wang, Wen Zhang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Carbamazepine (CBZ) is one of the contaminants of emerging concerns due to its broad distribution in water environments. The present study evaluated various photo-Fenton reactions to achieve enhanced CBZ removal using FeOCl as the photo-Fenton catalyst that exhibited high activity in ·OH generation at a wide range of pH. The effects of UV irradiation, H2O2 concentration, initial CBZ concentration and catalyst dosage on the CBZ degradation efficiency were evaluated with uncertainty analysis. The H2O2 concentration of 10 μM, a catalyst dosage of 0.2 g/L, and the initial concentration of CBZ of 100 μM led to the highest CBZ removal rate of 92 % under UV/H2O2/FeOCl system within 0.5 h The effects of common anions (i.e., CO32-, HCO3, SO42-, NO3- and Cl-) on the CBZ degradation were studied. Three possible degradation pathways and three major degradation by-products were analyzed by LC-ESI-MS, which would provide new insight into the degradation mechanisms of CBZ in photo-Fenton reactions.

Original languageEnglish (US)
Article number104501
JournalJournal of Environmental Chemical Engineering
Volume9
Issue number1
DOIs
StatePublished - Feb 2021

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Pollution
  • Process Chemistry and Technology

Keywords

  • By-product
  • CBZ
  • Degradation mechanism
  • FeOCl
  • Photo-Fenton

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