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@ARTICLE{Jansen:9701,
      author       = {Jansen, S. and Vereecken, H. and Klumpp, E.},
      title        = {{O}n the role of metabolic activity on the transport and
                      deposition of {P}seudomonas fluorescens in saturated porous
                      media},
      journal      = {Water research},
      volume       = {44},
      issn         = {0043-1354},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-9701},
      pages        = {1288 - 1296},
      year         = {2010},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {A study was conducted to understand the role of cell
                      concentration and metabolic state in the transport and
                      deposition behaviour of Pseudomonas fluorescens with and
                      without substrate addition. Column experiments using the
                      short-pulse technique (pulse was equivalent to 0.028 pore
                      volume) were performed in quartz sand operating under
                      saturated conditions. For comparison, experiments with
                      microspheres and inactive (killed) bacteria were also
                      conducted. The effluent concentrations, the retained
                      particle concentrations and the cell shape were determined
                      by fluorescent microscopy. For the transport of
                      metabolically-active P. fluorescens without substrate
                      addition a bimodal breakthrough curve was observed, which
                      could be explained by the different breakthrough behaviour
                      of the rod-shaped and coccoidal cells of P. fluorescens. The
                      70:30 rod/coccoid ratio in the influent drastically changed
                      during the transport and it was about 20:80 in the effluent
                      and in the quartz sand packing. It was assumed that the
                      active rod-shaped cells were subjected to shrinkage into
                      coccoidal cells. The change from active rod-shaped cells to
                      coccoidal cells could be explained by oxygen deficiency
                      which occurs in column experiments under saturated
                      conditions. Also the substrate addition led to two
                      consecutive breakthrough peaks and to more bacteria being
                      retained in the column. In general, the presence of
                      substrate made the assumed stress effects more pronounced.
                      In comparison to microspheres and inactive (killed)
                      bacteria, the transport of metabolically-active bacteria
                      with and without substrate addition is affected by
                      differences in physiological state between rod-shaped and
                      the formed stress-resistant coccoidal cells of P.
                      fluorescens.},
      keywords     = {Filtration / Fresh Water: microbiology / Porosity /
                      Pseudomonas fluorescens: chemistry / Pseudomonas
                      fluorescens: growth $\&$ development / Pseudomonas
                      fluorescens: metabolism / Silicon Dioxide: chemistry / Water
                      Pollutants: analysis / Water Pollutants: chemistry / Water
                      Pollutants (NLM Chemicals) / Silicon Dioxide (NLM Chemicals)
                      / J (WoSType)},
      cin          = {ICG-4 / JARA-ENERGY},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793 / $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Engineering, Environmental / Environmental Sciences / Water
                      Resources},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:20153499},
      UT           = {WOS:000275551300026},
      doi          = {10.1016/j.watres.2010.01.017},
      url          = {https://juser.fz-juelich.de/record/9701},
}