Application of heterogeneous photo-Fenton process for the mineralization of imidacloprid containing wastewater

Fuzhen Liu, Jia Ai, Hui Zhang, Yao Hui Huang

Research output: Contribution to journalArticle

Abstract

The imidacloprid was mineralized by heterogeneous photo-Fenton process in a three-phase fluidized bed reactor using waste iron oxide as catalyst. The effects of catalyst loading, dosage of H2O2 and pH were investigated to determine the optimal experiments conditions. The results revealed that TOC removal efficiency increases with an increase in H2O2 dosage of up to 105.0 mM, an increase in catalyst dosage from 1.0 to 5.0 g L−1, and a decrease in pH from 5.0 to 3.5. Under the optimal conditions, 97.7% TOC removal was achieved in 6 h under 254-nm UV irradiation. Moreover, recycling experiments indicated that the waste iron oxide had a good stability and the TOC removal of pesticide yielded more than 80% under the fourth recycles.

Original languageEnglish
Pages (from-to)539-546
Number of pages8
JournalEnvironmental Technology (United Kingdom)
Volume41
Issue number5
DOIs
Publication statusPublished - 2020 Feb 23

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All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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