Oxidation of aqueous pharmaceuticals by pulsed corona discharge

Iris Panorel*, Sergei Preis, Iakov Kornev, Henry Hatakka, Marjatta Louhi-Kultanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

48 Citations (Scopus)

Abstract

Oxidation of aromatic compounds of phenolic (paracetamol, β-oestradiol and salicylic acid) and carboxylic (indomethacin and ibuprofen) structure used in pharmaceutics was studied. Aqueous solutions were treated with pulsed corona discharge (PCD) as a means for advanced oxidation. Pulse repetition frequency, delivered energy dose and oxidation media were the main parameters studied for their influence on the process energy efficiency. The PCD treatment appeared to be effective in oxidation of the target compounds: complete degradation of pollutant together with partial mineralization was achieved at moderate energy consumption; oxidation proceeds faster in alkaline media. Low-molecular carboxylic acids were identified as ultimate oxidation by-products formed in the reaction.

Original languageEnglish
Pages (from-to)923-930
Number of pages8
JournalEnvironmental Technology
Volume34
Issue number7
DOIs
Publication statusPublished - 1 Apr 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • AOPs
  • ozone
  • pharmaceuticals
  • wastewater
  • water

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