Photocatalytic degradation of humic substances in the presence of ZnO nanoparticles immobilized on glass plates under ultraviolet irradiation

Afshin Maleki, Mahdi Safari*, Reza Rezaee, Reza Darvishi Cheshmeh Soltani, Behzad Shahmoradi, Yahya Zandsalimi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

ZnO nanoparticles were prepared through the chemical precipitation method and immobilized on glass plates. The effects of initial pH, UV lamp power, glass surface area, and initial humic substances (HS) concentration on the photocatalysis of HS were studied. Acidic conditions favoured the photocatalysis of HS. The degradation efficiency of HS was enhanced by increasing the UV lamp power and glass surface area. According to the results of total organic carbon (TOC) analysis, a mineralization efficiency of 59.3% was obtained within a reaction time of 120 min in comparison with the removal efficiency (%) of UV254, which was found to be 83.3%.

Original languageEnglish
Pages (from-to)2484-2489
Number of pages6
JournalSeparation Science and Technology
Volume51
Issue number14
DOIs
Publication statusPublished - 21 Sept 2016
Externally publishedYes

Keywords

  • Humic substances
  • immobilization
  • mineralization
  • photocatalytic degradation
  • ZnO nanocatalyst

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