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Institut für Wasserbau - IWS

Selected Topics and International Network Lectures

16:00 Uhr
Dr.-Ing. Arne Färber, Universität Stuttgart, Institut für Wasserbau, Lehrstuhl für Hydrologie und Geohydrologie

Thermal In-situ-Remediation Principles for Contaminated Soils: Do Processes or Structures Prevail

Thermal In-Situ remediation techniques are increasingly used to clean up soils from contaminants. Compared to most other "enhanced" methods, they dispose of a significant advantage, improving their efficiency substantially: heat conduction helps to "crack down" the "diffusion-limit-problem", which acts in many practical cases as the unsurmountable barrier for ordinary in-situ methods. Thus these methods may help to save a lot of time (and money). Nevertheless the limits for thermal technologies are evident as well. The presentation will show this by some experimental examples. Although the role of heterogeneous structures is apparent and for thermal methods can sometimes be considered by very simple approaches in order to predict the clean-up process, yet a thorough and consistent analysis is difficult to obtain due to the complex interaction between the various dominating processes and the structures involved. Thus the question in the title can be answered according to Radio Eriwan.