Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Modeling Solute Transport in Volcanic Ash Soils with Cation Exchange and Anion Retardation

Publiceringsår: 2011
Språk: Engelska
Sidor: 335-342
Publikation/Tidskrift/Serie: Environmental Modelling and Assessment
Volym: 16
Nummer: 4
Dokumenttyp: Artikel i tidskrift
Förlag: Springer


Groundwater under agricultural lands is often contaminated by nitrate. In southern Japan, aquifers are covered by volcanic ash soils that can leach nitrate to the groundwater. In this study, column experiments using two volcanic ash soils (Kuroboku and Akahoya) were carried out. A mixed solution of KNO3 and K2SO4 was used in the leaching experiments. Based on the experiments, a reactive transport model was developed using the Constrained Interpolation Profile method for ion transport and used to calculate chemical equilibrium for the cation exchange reactions. Anion adsorption was modeled by retardation in the numerical model. The developed simulation model results were compared to results obtained by the reactive transport model PHAST. The developed model was shown to quite well reproduce general characteristics of the experimental results. Also, the developed model results agreed well with results from PHAST. Slight discrepancy between observed and calculated breakthrough curves was probably caused by ignoring the kinetic reaction in the model calculations.


  • Water Engineering
  • Volcanic ash soils
  • Nitrate
  • Cation exchange
  • Anion adsorption
  • Reactive transport


  • ISSN: 1573-2967

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen