Bernd Susset

University of Tübingen | EKU Tübingen · Department of Geosciences

Per‐ and polyfluoroalkyl substances (PFAS) are persistent in the environment due to their chemical stability and can spread quickly in a lake system due to mixing. Passive samplers allow for time‐weighted average concentration monitoring and the ability to detect low concentrations, which are difficult to measure with conventional grab sampling. Th...

Column leaching tests are a common approach for evaluating the leaching behavior of contaminated soil and waste materials, which are often reused for various construction purposes. Standardized up-flow column leaching tests typically require about 7 days of laboratory work to evaluate long-term leaching behavior accurately. To reduce testing time,...

Gezielt abgebaute Sande, Kiese oder Felsgesteine sowie bei Baumaßnahmen anfallendes sekundäres Bodenmaterial wird seit jeher für bau‐ und kulturtechnische Zwecke eingesetzt. Der Abbau mineralischer Rohstoffe ist zumindest temporär mit starken Eingriffen in den Naturhaushalt, wie Landschaft‐ und Flächenverbrauch, verbunden. Es ist deshalb notwendig,...

In this contribution we give a first general overview of results of recent studies in Germany which focused on contaminant leaching from various materials and reactive solute transport in the unsaturated soil zone to identify the key factors for groundwater risk assessment. Based on these results we developed new and improved existing methods for g...

Reply to the comment by D. Guyonnet, on "Comparison on percolation to batch and sequential leaching tests: Theory and data".

Leaching tests are becoming more relevant in assessing solid waste material, particularly with respect to groundwater risks. In the field, water infiltration is the dominant leaching mechanism, which is simulated in the lab with batch and column tests. In this study, we compared percolation, through analytical solutions of the advection-dispersion...

This paper describes a method for the assessment of groundwater risk due to pollutant emission from contaminated soils. The method is based on column tests which are commonly used for the determination of desorption or dissolution rates of contaminants from various materials (e.g. contaminated soils and sediments). In Germany, legal standards focus...

Dispersive processes that diminish contaminant concentrations originating from an unsaturated source zone on the way to groundwater, were investigated. Simulations using the numerical model MIN3P were performed for a non-volatile, non-degrading contaminant from a persistent source after reaching a steady state. A 2-D vertical cross-section was used...

Column tests are an important laboratory tool for groundwater risk assessment. Depending on the mass transfer rates either maximum concentrations (Cmax, equilibrium) or maximum fluxes (Fmax, non-equilibrium) are monitored in the aqueous column effluent. With the aim of understanding and determining the relationships between material characteristics...

Zugl.: Tübingen, Univ., Diss., 2004. - Mit engl. Zsfassung