Description: Das Projekt "Transport of EINP through soil affected by the dynamics of infiltration flux and particle properties" wird vom Umweltbundesamt gefördert und von Helmholtz-Zentrum für Umweltforschung GmbH - UFZ, Department Bodenphysik durchgeführt. In this project we experimentally explore the transport of engineered inorganic nanoparticles (EINP) through soils. This is done for original EINPs and some pre-aged form. Transport of NPs in soil is expected to be different from that of reactive solutes, in that hydrodynamic drag, inertial and shear forces as well as the affinity to water-gas interfaces are expected to be more relevant. Hence, the mobility of EINPs in soil is highly sensitive to the morphology of the porous structure and the dynamics of water saturation.This project provides the pore network structure for natural soils using X-ray micro-tomography to allow for an up-scaling of pore-scale interactions explored by project partners to the scale of soil horizons. The pore structure is represented by a network model suitable for pore scale simulations including the dynamics of water-gas interfaces.Pore network simulations will be compared to column experiments for conservative tracers as well as for unaltered and pre-aged EINPs (obtained from INTERFACE). This includes steady state flow scenarios for saturated (ponding) and unsaturated conditions as well as for transient flow to explore the impact of moving water-gas interfaces. The final goal is to arrive at a consistent interpretation of experimental findings and numerical simulations to develop a module for modelling EINP transfer through soil as a function of particle properties, soil structural characteristics and external forcing in terms of flux boundary conditions.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Rochen ? Hydrodynamik ? Röntgenstrahlung ? Morphologie ? Tracer ? Brunnen ? Gasförmiger Stoff ? Bodenkunde ? Bodenstruktur ? Bodenwasser ? Gebäude ? Infiltration ? Szenario ? Bewässerung ? Nanopartikel ? Bodenqualität ? Bodenphysik ? Bodenhorizont ? Modellversuch ? Simulation ? Umweltforschung ? Wasser ? Boden ? Modellierung ? Wirkung ? Kenngröße ? Partikel ? Verkehr ? Staat ? DAUER ? PROJEKT ? EXPERIMENT ? EXTERN ? FORMBLAETTER ? VERFRACHTUNG ? VERGLEICHEN ? FUNKTION ? VERHAELTNIS ? Fluss [Bewegung] ? VERSCHIEBUNG ? GLEICHMAESSIG ? GRENZE ? Wechselwirkung ? INGENIEURWESEN ? ALT ? SAEULE ? BEWEGT ? LAENDER ? SCHNITTSTELLE ? Maßstabsvergrößerung ? UNSATURIERT ? Buchgrundstück ? BEWEGLICH ?
Region: Saxony-Anhalt
Bounding box: 11.7333° .. 11.7333° x 52° .. 52°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2011-01-01 - 2024-11-29
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