Nitrate-removal activity of a biofilm attached to a perlite carrier under continuous aeration conditions

Takahiro Yamashita, Hiroshi Yokoyama, Sumiyo Kanafusa, Akifumi Ogino, Mitsuyoshi Ishida, Takashi Osada, Yasuo Tanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)


The nitrate-removal activity of a biofilm attached to a perlite carrier from an aerobic bioreactor used for treating dairy farm wastewater was examined by batch experiments under continuous aeration conditions. Despite aeration, the biofilm removed nitrate at a rate of 114.4 mg-N/kg-perlite/h from wastewater containing cow milk and manure. In a clone library analysis of the biofilm, bacteria showing high similarity to the denitrifying bacteria Thauera spp. were detected.

Original languageEnglish
Pages (from-to)578-581
Number of pages4
JournalBioscience, Biotechnology and Biochemistry
Issue number3
Publication statusPublished - Apr 13 2011
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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