A5091636799- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Radioactive element chemistry and processing
- Nuclear and radioactivity studies
- Risk Perception and Management
- Advanced NMR Techniques and Applications
- Soil and Unsaturated Flow
- NMR spectroscopy and applications
- Advanced MRI Techniques and Applications
- Sustainable Agricultural Systems Analysis
- Geophysical and Geoelectrical Methods
- Agriculture, Soil, Plant Science
- Graphite, nuclear technology, radiation studies
- Agriculture, Water, and Health
- Soil Carbon and Nitrogen Dynamics
- Groundwater flow and contamination studies
Leibniz University Hannover
2023
University of Bremen
1990-2021
A compartmental model for the reactive flow of radioisotope 131I, frequently introduced into sewer system at varying concentrations through radiotherapy thyroid diseases, has been developed an existing municipal wastewater treatment plant (WWTP). It includes transition activity from dissolved to suspended particulate and colloid matter, separation phases in sedimentation basins. parametrized by experimental data obtained key locations plant, validated measured time series concentration...
Abstract The component additive model UNiSeCs II for simulating the physicochemical behaviour of radionuclides americium, plutonium and selenium in agricultural soils is presented. validated by estimating distribution coefficients (K d ) these elements measured batch experiments from literature. For all three elements, resulting average relative deviations experimental values are smaller than a factor 2.5. This indicates that has potential to significantly improve predictions radioecological...
In this study it is shown how the behaviour of radionuclides in agricultural soils can be quantitatively estimated. The sorption those nuclides onto soil particle surfaces a key process which every predictive model has to take into account. This been accomplished by implementing component additivity (CA-) well known geochemical code PHREEQC that includes most important sorbents clay, amorphous iron oxide and organic matter. For uranium cesium calculations are excellent agreement with...
Abstract. Compared with geological structures, many processes and fluctuations in the biosphere take place on much shorter timescales are difficult, often nearly impossible to predict over long periods of time. Consequently, modelling results subject tremendous uncertainties. While German regulations require for dose estimations as part site selection procedure a nuclear waste repository, they also recognize those uncertainties by stating that calculated estimates not an actual prognosis...
Abstract. In April 2022, the Federal Office for Safety of Nuclear Waste Management (BASE) invited public to comment on previously issued draft “Berechnungsgrundlage für die Dosisabschätzung bei der Endlagerung von hochradioaktiven Abfällen” (Calculation basis dose assessment final disposal high-level radioactive waste); 360 comments and suggestions were submitted, especially concerning radioecological modelling. a table that was made publicly available, many issues raised commented on, but...