A membrane aerated biofilm reactor for sulfide control from anaerobically treated wastewater

Priscila Rosseto Camiloti, Freddy Valdés, Tiago Palladino Delforno, Jan Bartacek, Marcelo Zaiat, DAVID ALEJANDRO JEISON NUÑEZ

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A upflow anaerobic sludge blanket reactor was operated combined to a membrane aerated biofilm reactor for sulfate removal and for elemental sulfur reclamation. A commercial silicon tube was used as an oxygen delivery diffuser. The process achieved high rates of sulfide removal from the liquid phase (90%). The hydrogen sulfide removal was influenced by the pH value and at pH value of 7.5, 98% of the H2S was removed. The elemental sulfur was observed inside the membrane, with content in the biomass of 21%. Through the massive sequencing of the samples, the microbial community diversity and the stratification of biomass inside the silicon tube was demonstrated, confirming the presence of sulfide-oxidizing bacteria on the membrane wall. The most important genera found related to the sulfur cycle were Sulfuricurvum, Geovibrio, Flexispira and Sulforospirillum.

Original languageEnglish
Pages (from-to)2354-2363
Number of pages10
JournalEnvironmental Technology (United Kingdom)
Volume40
Issue number18
DOIs
StatePublished - 11 Aug 2019

Keywords

  • elemental sulfur
  • high-throughput sequencing
  • microaeration
  • silicon membrane
  • Sulfide oxidation

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