Schwerpunktprogramm (SPP) 1315: Biogeochemische Grenzflächen in Böden; Biogeochemical Interfaces in Soil, Imaging and image simulation of organic target compound migration between different biogeochemical interfaces of a soil horizon using positron emission tomography and the lattice Boltzmann equation approach

Description: Das Projekt "Schwerpunktprogramm (SPP) 1315: Biogeochemische Grenzflächen in Böden; Biogeochemical Interfaces in Soil, Imaging and image simulation of organic target compound migration between different biogeochemical interfaces of a soil horizon using positron emission tomography and the lattice Boltzmann equation approach" wird/wurde gefördert durch: Deutsche Forschungsgemeinschaft. Es wird/wurde ausgeführt durch: Helmholtz-Zentrum Dresden-Roßendorf, Forschungsstelle Leipzig, Institut für Ressourcenökologie, Abteilung Reaktiver Transport.We propose to use positron emission tomography (PET) for imaging of tracer migration in a soil horizon, to be coupled with image simulation using the lattice Boltzmann equation (LBE) modeling approach. PET enables direct visualization of inert KF or KBr solute migration at the soil horizon scale, but also reactive halogenated organic target (2,4-D and MCPA) compound migration down to nM concentrations once radiolabelling with 18F or 76Br marker is achieved. Retardation at biogeochemical interfaces with different sorption properties will thus be imaged in-situ. Theoretical image simulation for process verification will be enabled by introducing a multi-grid approach and additional kinetic boundary conditions in the parallelized LBE solver. As a boundary condition for the latter, the real pore scale and distribution of biogeochemical interfaces will be derived by X-ray computer-tomography (XCT) down to 300 nm spatial voxel resolution. The aim is to produce by both approaches velocity field movies due to heterogeneous biogeochemical retardation of the target compounds with high resolution in both the spatial and temporal scale (4D).

SupportProgram

Origin: /Bund/UBA/UFORDAT

Tags: Computer ? Rochen ? Tracer ? Bodenkunde ? Halogenverbindung ? Domestiziertes Tier ? Ackerfläche ? Bodenhorizont ? Emission ? Simulation ? Sorption ? Boden ? Modellierung ? Aufbereitungstechnik ? in situ ? Gebiet ? Buchgrundstück ? Konzentrat ? Visualisierung [Umweltinformation] ?

Region: Sachsen

Bounding boxes: 10.40664° .. 10.40664° x 49.29433° .. 49.29433°

License: cc-by-nc-nd/4.0

Language: Englisch/English

Organisations

• Deutsche Forschungsgemeinschaft (Bereitsteller*in)
• Helmholtz-Zentrum Dresden-Roßendorf, Forschungsstelle Leipzig, Institut für Ressourcenökologie, Abteilung Reaktiver Transport (Betreiber*in)
• Umweltbundesamt (Bereitsteller*in)
• Universität Mainz, Geographisches Institut (Mitwirkende)
• Universität Mainz, Institut für Geowissenschaften, Arbeitsgruppe Hydrogeochemie (Mitwirkende)
• Universität Tübingen, Institut für Geowissenschaften, Zentrum für Angewandte Geowissenschaften (Mitwirkende)

Time ranges: 2010-01-01 - 2025-04-25

Status

Aktiv

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