Isolation and Characterization of a Floc-Forming Bacterium Sphingomonas paucimobilis 551 from Activated Sludge.

DOI 3 Citations
  • FUJITA MASANORI
    Department of Environmental Engineering, Graduate School of Engineering, Osaka University
  • IKE MICHIHIKO
    Department of Environmental Engineering, Graduate School of Engineering, Osaka University
  • NAKAMURA FUMIHARU
    River Basin Development Division, Public Works Department, Hyogo Prefectural Government
  • SODA SATOSHI
    Department of Environmental Engineering, Graduate School of Engineering, Osaka University

Abstract

Floc-forming bacteria were isolated from samples of a variety of wastewater treatment processes. At the shorter sludge retention times, a laboratory-scale activated sludge process maintained floc-forming bacteria at a higher percentage, though the number of total heterotrophic bacteria in the process became smaller. This result suggests that floc-forming bacteria are difficult to be washed out in the effluent. Among the 347 isolated heterotrophic bacterial strains, 10 strains showed high floc-forming ability. Sphingomonas paucimobilis 551 isolated from the activated sludge process, showed the most desirable properties for a floc-forming host of recombinant DNAs; (i) it is agram-negative bacterial strain into which we can easily introduce recombinant DNAs by using well-developed versatile plasmid vectors; (ii) it maintains good floc-formation for arelatively long time; (iii) it can grow in a relatively wide range of pHs, temperatures, and nutritional concentrations and on a wide variety of organic compounds.

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Details 詳細情報について

  • CRID
    1390001204960778112
  • NII Article ID
    130003700391
  • DOI
    10.2521/jswtb.34.3_195
  • ISSN
    18810438
    09106758
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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