Biofiltration of high concentration of hydrogen sulphide using Thiobacillus thioparus

Patricio Oyarzún, Fernando Arancibia, Christian Canales, Germán E. Aroca

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167 Scopus citations


A biofiltration system using peat as solid support inoculated with Thiobacillus thioparus (ATCC 23645) was developed for treating a gaseous stream containing high concentrations of H2S. The inoculation systems allowed an efficient colonisation of the peat with T. thioparus, reaching 2.7 x 108 cells g-1 of dry peat. The biofilter reached an efficiency of 100% when fed with 355 ppm H2S and an air flow of 0. 030 m3 h-1. When increasing the inlet concentration of the acid, the removal efficiencies of H2S decreased, reaching 90 and 60%, at 0.070 and 0.030 m3 h-1, respectively. A maximum value for the elimination capacities of 55 g m-3 h-1 was obtained. Mathematical modelling based on Ottengraf's model enabled a prediction of the performance of the biofilter.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalProcess Biochemistry
Issue number2
StatePublished - 31 Oct 2003


  • Biofiltration
  • HS
  • Hydrogen sulphide
  • Peat
  • Thiobacillus thioparus


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