% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Zhang:820896,
      author       = {Zhang, Miaoyue and Bradford, Scott A. and Šimůnek, Jirka
                      and Vereecken, Harry and Klumpp, Erwin},
      title        = {{D}o {G}oethite {S}urfaces {R}eally {C}ontrol the
                      {T}ransport and {R}etention of {M}ulti-{W}alled {C}arbon
                      {N}anotubes in {C}hemically {H}eterogeneous {P}orous
                      {M}edia?},
      journal      = {Environmental science $\&$ technology},
      volume       = {50},
      number       = {23},
      issn         = {1520-5851},
      address      = {Columbus, Ohio},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2016-06160},
      pages        = {12713–12721},
      year         = {2016},
      abstract     = {Transport and retention behavior of multi-walled carbon
                      nanotubes (MWCNTs) was studied in mixtures of negatively
                      charged quartz sand (QS) and positively charged
                      goethite-coated sand (GQS) to assess the role of chemical
                      heterogeneity. The linear equilibrium sorption model
                      provided a good description of batch results, and the
                      distribution coefficients (KD) drastically increased with
                      the GQS fraction that was electrostatically favorable for
                      retention. Similarly, retention of MWCNTs increased with the
                      GQS fraction in packed column experiments. However,
                      calculated values of KD on GQS were around 2 orders of
                      magnitude smaller in batch than packed column experiments
                      due to differences in lever arms associated with
                      hydrodynamic and adhesive torques at microscopic roughness
                      locations. Furthermore, the fraction of the sand surface
                      area that was favorable for retention (Sf) was much smaller
                      than the GQS fraction because nanoscale roughness produced
                      shallow interactions that were susceptible to removal. These
                      observations indicate that only a minor fraction of the GQS
                      was favorable for MWCNT retention. These same observations
                      held for several different sand sizes. Column breakthrough
                      curves were always well described using an
                      advective-dispersive transport model that included retention
                      and blocking. However, depth-dependent retention also needed
                      to be included to accurately describe the retention profile
                      when the GQS fraction was small. Results from this research
                      indicate that roughness primarily controlled the retention
                      of MWCNTs, although goethite surfaces played an important
                      secondary role.},
      cin          = {IBG-3},
      ddc          = {050},
      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:000389557100022},
      doi          = {10.1021/acs.est.6b03285},
      url          = {https://juser.fz-juelich.de/record/820896},
}