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Strains of internal biofilm in aerobic granular membrane bioreactors

Yu-Chuan Juang, Sunil S. Adav, Duu-Jong Lee

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

This study isolated strains in suspended liquor, the surface fouling layer, and biofilm inside hollow-fiber membranes of a membrane bioreactor (MBR); analyzed their distributions, sizes, surface charges, and growth behaviors; and determined the quantities of extracellular polymeric substances (EPS) secreted by these strains under different organic loadings. Three strains, which may penetrate the microfiltration membranes, were close relatives of the Ralstonia mannitolilytica strain SDV (GenBank Accession No. GU451066), Arthrobacter sp. BJQ-2 (GenBank Accession No. GU451067), and Actinobacterium DS3 (GenBank Accession No. GU451068). Among these three strains, only Arthrobacter sp. developed an internal biofilm. The relatively short length of Arthrobacter sp. minimizes resistance to cells moving through the membrane matrix, thereby enhancing its ability to build a biofilm in the interior surface of membranes. © 2010 Springer-Verlag.
Original languageEnglish
Pages (from-to)1987-1993
JournalApplied Microbiology and Biotechnology
Volume86
Issue number6
DOIs
Publication statusPublished - May 2010
Externally publishedYes

Bibliographical note

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Research Keywords

  • Arthrobacter
  • Internal biofilm
  • Membrane bioreactor
  • Strains

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