Catalytic wet oxidation of real process wastewaters

Arezoo M. Hosseini, A. Tungler, E. Zsolt Horváth, Z. Schay, Éva Széles

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

CWO and WO were carried out for oxidizing different industrial wastewaters of pharmaceutical production, at 230°C and 250°C and total pressure of 50 bar, with oxygen, in stainless steel autoclaves. The catalysts were titania supported precious metal (Pt, Pd, Ru, Rh) oxides and copper sulfate. Samples were analyzed with respect to their TOC, COD (BOD) content. The tested wastewaters, some of them mother liquors, could be oxidized, but with rather different conversions. Even at the hardto-oxidize wastewater the COD decrease hit the 50 % during 4 hours, this procedure decreased the COD/BOD ratio. The Ru oxide-titania catalyst proved to be the most active in this process, yet in the non-catalytic reactions significant conversion was detected also, due to the Fe or Cu ion content of the wastewaters.

Original languageEnglish
Pages (from-to)49-57
Number of pages9
JournalPeriodica Polytechnica: Chemical Engineering
Volume55
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

Wastewater
Oxidation
Biochemical oxygen demand
Copper Sulfate
Catalysts
Titanium oxides
Stainless Steel
Autoclaves
Precious metals
Drug products
Oxides
Stainless steel
Titanium
Ions
Oxygen
Copper
Pharmaceutical Preparations
titanium dioxide

Keywords

  • Catalytic wet oxidation
  • Mixed real industrial wastewater
  • Pd oxide-titania catalyst
  • Ru oxide-titania catalyst

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Catalytic wet oxidation of real process wastewaters. / Hosseini, Arezoo M.; Tungler, A.; Zsolt Horváth, E.; Schay, Z.; Széles, Éva.

In: Periodica Polytechnica: Chemical Engineering, Vol. 55, No. 2, 2011, p. 49-57.

Research output: Contribution to journalArticle

Hosseini, Arezoo M. ; Tungler, A. ; Zsolt Horváth, E. ; Schay, Z. ; Széles, Éva. / Catalytic wet oxidation of real process wastewaters. In: Periodica Polytechnica: Chemical Engineering. 2011 ; Vol. 55, No. 2. pp. 49-57.
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