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@ARTICLE{Mukherjee:811705,
      author       = {Mukherjee, Santanu and Weihermüller, Lutz and Tappe,
                      Wolfgang and Hofmann, Diana and Köppchen, Stephan and
                      Laabs, Volker and Vereecken, Harry and Burauel, Peter},
      title        = {{S}orption–desorption behaviour of bentazone, boscalid
                      and pyrimethanil in biochar and digestate based soil
                      mixtures for biopurification systems},
      journal      = {The science of the total environment},
      volume       = {559},
      issn         = {0048-9697},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-04089},
      pages        = {63 - 73},
      year         = {2016},
      abstract     = {Pesticide pollution caused by point or diffuse sources may
                      lead to the contamination of ground and surface water.
                      Biobed or biofilter systems, which are filled with a variety
                      of organic materials (soil, peat and straw), are commonly
                      used on farm to treat pesticide remnants. The objective of
                      this study was to assess the sorption–desorption potential
                      of three pesticides with contrasting physico-chemical
                      properties (bentazone, boscalid, and pyrimethanil) on novel
                      biofilter materials based on bioenergy residues (mixtures of
                      soil with digestate and/or biochar) in laboratory batch
                      equilibrium experiments.The results show that the
                      biomixtures of digestate and biochar with soil increased
                      pesticides sorption potential and the 1/ndes values were
                      lower than the 1/nads values indicating that the desorption
                      was hysteretic for all pesticides on these materials. The
                      adsorption and desorption of all the chemicals conformed to
                      linear and Freundlich isotherms. Higher values of
                      distribution [Kd (> 78 L kg− 1)] and Freundlich sorption
                      coefficient [Kf (> 900 μg1–1/n L1/n kg− 1)] were
                      observed for all pesticides for the digestate and biochar
                      based mixtures compared with the blank soil, which was
                      attributed to the lower organic carbon content of the
                      latter. However, unlike for sorption there was no
                      statistically significant difference between the biochar and
                      the digestate mixtures for pesticides desorption (p > 0.05;
                      t-test). Specific UV-absorbances at 254 nm (SUVA254)
                      indicated the aromatic character of digestate (5 and $30\%)$
                      and biochar $(5\%)$ biomixture, which showed the highest
                      organic-carbon-partition coefficients (Koc) and/or Kd values
                      amongst all biomixtures for all pesticides. Therefore, these
                      biomixtures were found to be the most promising substrates
                      amongst the tested ones for a novel biobed setup and can be
                      used as effective and alternative adsorbents for removing
                      pesticides from percolating water in biofilters},
      cin          = {IBG-3},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000375136600008},
      doi          = {10.1016/j.scitotenv.2016.03.145},
      url          = {https://juser.fz-juelich.de/record/811705},
}