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@ARTICLE{Abbasi:48373,
      author       = {Abbasi, F. and Javaux, M. and Vanclooster, M. and Feyen, J.
                      and Wyseure, G. and Nziguheba, G.},
      title        = {{E}xperimental study of water flow and sulphate transport
                      at monolith scale},
      journal      = {Agricultural water management},
      volume       = {79},
      issn         = {0378-3774},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-48373},
      pages        = {93 - 112},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {In this study, sulphur transport processes and effect of
                      flow rate on sulphate breakthrough curves (BTCs) were
                      studied on six undisturbed large soil monoliths (each having
                      roughly a volume of 0.5 m(3)), collected from two different
                      agricultural soils being loamy and sandy loam. In the
                      laboratory, each monolith was equipped with different
                      measuring devices to monitor soil water content, bulk soil
                      electrical conductivity (ECa), soil temperature, pressure
                      head, outlet flux, and pH. Four unsaturated steady state
                      experiments were carried out on each monolith using two
                      different imposed fluxes (referred to as low and high).
                      First a chloride breakthrough experiment was performed to
                      identify the basic transport processes followed by sulphate
                      breakthrough experiment for the identification of the
                      important sulphate transport processes. Water and solute
                      (chloride and sulphate) mass balances were made to evaluate
                      effective sulphate transformations at the scale of the
                      monolith. The relative water mass balance errors ranged
                      between $-4.0\%$ and $5.0\%.$ The chloride mass balances
                      were almost as good as those obtained for water, whereas the
                      sulphate mass balance revealed that sulphate was subjected
                      to adsorption and immobilization during the transport. The
                      high flux sulphate experiments resulted in relatively large
                      mass balance discrepancies compared to the low flux sulphate
                      experiments. The sulphate breakthrough curves (BTCs) were
                      somewhat retarded in the loamy monoliths whereas both
                      chloride and sulphate BTCs were significantly affected by
                      preferential flow in the sandy loam monoliths. Standard
                      batch experiments showed that the adsorption isotherm was
                      linear and immobilization occurred in both soils studied
                      whereas net mineralization was essentially low. The effect
                      of flow rate on the BTCs and influence of water content on
                      immobilization process was not apparent. (c) 2005 Elsevier
                      B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-IV},
      ddc          = {630},
      cid          = {I:(DE-Juel1)VDB50},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Agronomy / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000234628900005},
      doi          = {10.1016/j.agwat.2005.07.032},
      url          = {https://juser.fz-juelich.de/record/48373},
}