Critical assessment of models for transport of engineered nanoparticles in saturated porous media

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

To reliably assess the fate of engineered nanoparticles (ENP) in soil, it is important to understand the performance of models employed to predict vertical ENP transport. We assess the ability of seven routinely employed particle transport models (PTMs) to simulate hyperexponential (HE), nonmonotonic (NM), linearly decreasing (LD), and monotonically increasing (MI) retention profiles (RPs) and the corresponding breakthrough curves (BTCs) from soil column experiments with ENPs. Several important observations are noted. First, more complex PTMs do not necessarily perform better than simpler PTMs. To avoid applying overparameterized PTMs, multiple PTMs should be applied and the best model selected. Second, application of the selected models to simulate NM and MI profiles results in poor model performance. Third, the selected models can well-approximate LD profiles. However, because the models cannot explicitly generate LD retention, these models have low predictive power to simulate the behavior of ENPs that present LD profiles. Fourth, a term for blocking can often be accounted for by parameter variation in models that do not explicitly include a term for blocking. We recommend that model performance be analyzed for RPs and BTCs separately; simultaneous fitting to the RP and BTC should be performed only under conditions where sufficient parameter validation is possible to justify the selection of a particular model.

OriginalspracheEnglisch
ZeitschriftEnvironmental Science & Technology
Jahrgang48
Ausgabenummer21
Seiten (von - bis)12732-12741
Anzahl der Seiten10
ISSN0013-936X
DOIs
PublikationsstatusErschienen - 04.11.2014
Extern publiziertJa

DOI

Zuletzt angesehen

Publikationen

  1. Assessing Online Consultation in Participatory Governance
  2. Konstanz im Wandel?
  3. Rain, rain go away! A diary study on morning weather and affective well‐being at work
  4. A poor international standard for trap selectivity threatens carnivore conservation
  5. Professionell und/oder gestaltungsorientiert?
  6. Mathematical Prerequisites for STEM Programs
  7. Aprendiendo con todos los sentidos en la clase EFE
  8. Syntheses of retipolide E and ornatipolide, 14-membered biaryl-ether macrolactones from mushrooms
  9. Museums, Transculturality, and the Nation-State
  10. Being Recovered as an Antecedent of Emotional Labor
  11. Treppauf, Treppab
  12. Environmental Value Added
  13. Pflanzengesellschaft des Jahres 2021
  14. Der Sprachkörper unter dem Seziermesser: Strukturalismus im Goethe-Wörterbuch
  15. MSPs for the SDGs
  16. Determinanten menschlicher Fehler in Risikoindustrien
  17. Knowledge transfer in age-diverse coworker dyads in China and Germany
  18. Wasser und nachhaltige Chemie
  19. Ansatzpunkte für ein systematisches Beschäftigungsmanagement
  20. Stromzugang im Globalen Süden
  21. Sustainability of rural electrification programs based on off-grid photovoltaic (PV) systems in Chile
  22. Arbeitsräume hacken
  23. Special Section: Personality at Work
  24. Measuring Environmental Sustainability
  25. Environmental management accounting and its effects on carbon management and disclosure quality
  26. Commentary on articles 5-6
  27. Gewalt
  28. The proposed adjustment of Germany's renewable energy law
  29. Der Zusammenhang von Schulleitungshandeln, Unterrichtsgestaltung und Lernerfolg
  30. The ironies of autonomy
  31. Metaphern mehrsprachiger Schüler*innen zu abstrakten Phänomenen