Nitrospira community composition in nitrifying reactors operated with two different dissolved oxygen levels

Hee Deung Park, Daniel R. Noguera

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Nitrospira is a dominant member of nitrite-oxidizing bacteria (NOB) in nitrifying bioreactors as well as in natural habitats. In this study, Nitrospira NOB were investigated in the two nitrifying reactors operated with high and low dissolved oxygen (DO) concentrations for a period of 300 days. Phylogenetic and terminal restriction fragment length polymorphism analyses based on 16S rRNA gene sequences revealed that the Nitrospira community compositions of the two reactors during the early period related to group 1 and half of the Nitrospira community composition shifted to group 2 in the high-DO reactor after day 179, although there was no significant change in the low-DO reactor. These results suggested that DO was an important factor affecting Nitrospira community compositions in the nitrifying reactors.

Original languageEnglish
Pages (from-to)1470-1474
Number of pages5
JournalJournal of microbiology and biotechnology
Volume18
Issue number8
Publication statusPublished - 2008 Aug 28
Externally publishedYes

Keywords

  • Dissolved oxygen
  • Nitrification
  • Nitrite-oxidizing bacteria
  • Nitrospira
  • Terminal restriction fragment length polymorphism (t-RFLP)

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

Fingerprint Dive into the research topics of 'Nitrospira community composition in nitrifying reactors operated with two different dissolved oxygen levels'. Together they form a unique fingerprint.

  • Cite this