HU - Hydrogeology and Environment

Journal of the Dept. of Hydrogeology and Environment, University of Würzburg (ISSN 09309-3757)

Editorial office: BGI, Greisingstr. 8, 97074 Würzburg, GERMANY

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Vol. 15 (1998)



Abstract



Vol. 15: 

Durchfluß- und Sorptionsverhalten ausgewählter geologischer Einheiten gegenüber organischen und anorganischen Modellsubstanzen - Untersuchung an ungestörten Proben.

[Conductivity of Undisturbed Mesozoic Claystones to Organic and Anorganic Liquids]

Dieter Pötzl


Abstract:
Hydraulic conductivity and its susceptibility to changes in time or exposition to chemicals are mayor factors to describe the stability of claystones and clayliners. Six mesozoic claystones from Franken/Bavaria, selected to represent a range of mineralogies, were permeated with water, sodium chloride and five organic liquids in fixed wall permeameters. The conductivity of each claystone/water followed by the chosen anorganic and organic liquid was measured. The organic liquids included an acid, a base and more or less polar solvents. The organic liquids were acetic acid, aniline, diethylamine, acetone and ethanol. The conentration of the permeating liquid was first 0,01 mol/l, then 0,05 mol/l and at last 0,3 mol/l. The permeating tests lasts nearly 2 years in total. Tracer-tests, mineralogical and physical determinations of the claystones (Rötton, Lehrbergschichten, Feuerletten, Rhätton, Amaltheenton und Opalinuston) were made in order to describe the clay-chemical interactions between claystone and organic solvent.

Paper language: german; german abstract





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