Catalyst screening and reaction kinetics in the degradation of pharmaceuticals by ozonation

P. Tolvanen, S. Said, A. Franz, K. Eränen, N. Kumar, T. Salmi

Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

Abstract

The pollution of various pharmaceuticals into the municipal wastewaters and to rivers, lakes and sea is a major increasing concern. Due to the large water amounts in urban areas, the technology for removing efficiently all the chemicals is limited and large quantities of human pharmaceuticals are passed through the waterer purification processes. Some of the most common pharmaceuticals were studied in a semibatch reactor where the ozone was ex-situ generated continuously, and the degradation of the drug was kinetically followed by continuous sampling, O3 quenching and HPLC analysis. The solubility of ozone as well as the degradation of pharmaceuticals was studied under various gas flow, stirring, temperature and pH conditions. An effort was put in the analysis of low-molecular weight degradation products to fully understand the reaction mechanisms of the degradation. Several catalysts screened, and the best candidates were studied for enhancing the degradation of several pharmaceuticals. The influence of the catalyst immobilization was also studied by applying a rotating bed reactor.

Original languageEnglish
Title of host publication22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016
PublisherCzech Society of Chemical Engineering
Pages27-28
Number of pages2
ISBN (Electronic)9781510859623
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
Event22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016 - Prague, Czech Republic
Duration: 27 Aug 201631 Aug 2016

Publication series

Name22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016
Volume1

Conference

Conference22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016
Country/TerritoryCzech Republic
CityPrague
Period27/08/1631/08/16

Keywords

  • Green process intensification
  • Ozonation
  • Pharmaceuticals
  • Solid catalysts
  • Waste water

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