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@ARTICLE{Witthuhn:46549,
      author       = {Witthuhn, B. and Pernyeszi, S. K. and Klauth, P. and
                      Vereecken, H. and Klumpp, E.},
      title        = {{S}orption study of 2,4-dichlorophenol on organoclays
                      constructed for soil bioremediation},
      journal      = {Colloids and surfaces / A},
      volume       = {265},
      issn         = {0927-7757},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-46549},
      pages        = {81 - 87},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The role of the type and amount of cationic surfactant in
                      the sorption behaviour of partially modified clays was
                      studied and the applicability of a partially modified
                      organoclay for bioremediation was demonstrated. Partially
                      modified surfactant/clay complexes ("organoclays") were
                      prepared from Na-montmorillonite by using
                      monoalkyl-(dodecyltrimethylammonium and
                      octadecyltrimethylammonium) and dialkylammonium
                      (didodecyldimethylammonium and dioctadecyldimethylammonium)
                      bromides. The degree of modification was varied between 35
                      and $89\%$ of the cation exchange capacity of
                      montmorillonite (MM). The sorption of 2,4-dichlorophenol
                      (DCP) on organoclays was studied by using the batch
                      technique. The intercalation of DCP into the interlayers of
                      organo-MM was detected by X-ray diffraction. The adsorption
                      isotherms found were non-linear indicating that the sorption
                      is not only based on a simple partition mechanism. The
                      adsorption coefficients K-d calculated from the initial
                      isotherm slope turned out to be exponential with the organic
                      carbon content of organo-MM (integral(oc)) In particular,
                      dialkylammonium-modified MM revealed outstanding sorption
                      characteristics for DCP. The comparison of partially
                      modified organo-MMs with similar integral(oc) and volume
                      fraction of surfactant indicated that the surfactant
                      arrangement in the interlayers significantly influences the
                      DCP adsorption. It-could be assumed that both the kind and
                      degree of exchanged surfactant play a decisive role in the
                      adsorption of DCP on the organoclays. By performing
                      biodegradation experiments in the presence of
                      dioctadecyldimethylammonium montmorillonite, the complete
                      biodegradation of DCP was achieved demonstrating the
                      applicability of partially modified organoclays for
                      bioremediation. (c) 2005 Elsevier B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-IV},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB50},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Chemistry, Physical},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000231379100010},
      doi          = {10.1016/j.colsurfa.2004.11.049},
      url          = {https://juser.fz-juelich.de/record/46549},
}