Removal of ammonia by immobilized Nitrosomonas europaea in a biotrickling filter packed with polyurethane foam

Martín Ramírez, José Manuel Gómez, Germán Aroca, Domingo Cantero

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A biotrickling filter with Nitrosomonas europaea immobilized on polyurethane foam is proposed for treating ammonia contaminated air. The effect of the surface velocity of the recirculation medium, nitrite concentration, pH, empty bed residence time (EBRT) and ammonia inlet load on the NH3 removal process was investigated. The total amount of biomass immobilized on the carrier was 3.29 ± 0.52 × 1010 cells g-1 dry carrier. The maximum elimination capacity of the biotrickling filter was 270 g N m-3 h-1 at pH 7.5, an EBRT of 11 s, and nitrite concentrations below 100 mM. These results show that system studied can be considered as a viable alternative for the treatment of gaseous emissions containing high concentrations of ammonia.

Original languageEnglish
Pages (from-to)1385-1390
Number of pages6
JournalChemosphere
Volume74
Issue number10
DOIs
StatePublished - Mar 2009
Externally publishedYes

Keywords

  • Ammonia
  • Biotrickling filter
  • Nitrosomonas europaea
  • Polyurethane foam

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