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@ARTICLE{Gargiulo:3548,
      author       = {Gargiulo, G. and Bradford, S.A. and Simunek, J. and
                      Ustohal, P. and Vereecken, H. and Klumpp, E.},
      title        = {{B}acteria {T}ransport and {D}eposition under {U}nsaturated
                      {F}low {C}onditions: {T}he {R}ole of {W}ater {C}ontent and
                      {B}acteria {S}urface {H}ydrophobicity},
      journal      = {Vadose zone journal},
      volume       = {7},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {PreJuSER-3548},
      pages        = {406 - 419},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Column experiments were conducted to investigate the
                      transport and deposition behavior of representative
                      hydrophobic and hydrophilic bacteria strains in sand at
                      different water saturations. These strains are similar in
                      surface charge, shape, and size, and differ primarily in
                      their surface hydrophobicity and tendency to form
                      aggregates. The amount of bacteria that were retained in the
                      sand increased with decreasing water saturation, especially
                      for the more hydrophobic strain that formed larger cell
                      aggregates. Most of the cells were retained close to the
                      column inlet, and the rate of deposition rapidly decreased
                      with depth. The experimental data were analyzed using a
                      mathematical model that accounted for deposition on two
                      kinetic sites. Consideration of depth-dependent deposition
                      in the model formulation significantly improved the
                      description of the data, and the amount of cell retention
                      was typically dominated by this site. The depth-dependent
                      deposition coefficient tended to increase with decreasing
                      water content, especially for the hydrophobic bacteria.
                      Straining is believed to account for these observations
                      because it increases in magnitude with increasing cell and
                      aggregate size and when a greater fraction of the water
                      flows through a larger number of small pore spaces with
                      decreasing water content. Cell retention on the other
                      kinetic deposition site was well described using a
                      conventional model for attachment and detachment. Consistent
                      with interaction energy calculations for bacteria
                      attachment, however, low amounts of cell retention occurred
                      on this site. Attempts to separately determine the amounts
                      of attachment to solid-water and air-water interfaces were
                      confounded by the influence of straining.},
      keywords     = {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    = {Environmental Sciences / Soil Science / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000256204600002},
      doi          = {10.2136/vzj2007.0068},
      url          = {https://juser.fz-juelich.de/record/3548},
}