Description: Das Projekt "Abiotische Umwandlungen von anthropogenen organischen Substanzen in Boeden und Grundwasser" wird vom Umweltbundesamt gefördert und von Eidgenössische Technische Hochschule Zürich (ETH), Institut für Terrestrische Ökologie, Arbeitsgruppe Bodenschutz durchgeführt. Rising amounts of anthropogenic organic compounds in soils and aquifers increasingly stress the environment. The interaction with the solid matrix plays an important role in the fate of the chemicals. The importance of abiotic transformations at the solid-liquid interface, the most prominent of which are hydrolysis and redox reactions, has so far been underestimated. The objective of this project is to study the kinetics, reaction mechanisms and structure-reactivity relationships of heterogenous hydrolysis reactions. The interactions between various pesticides, oxides and clay minerals will be examined. In contrast to most investigations of similar systems, where only initial rates have been studied, we apply a steady-state approach using flow-through reactors. The results should contribute to the understanding and quantification for abiotic transformations in soils and aquifers. Eventually, experiments with soil columns will be performed to validate the results gained for systems which are more similar to natural soils.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Schädlingsbekämpfungsmittel ? Zürich ? Pestizid ? Ökologie ? Oxid ? Bodenverunreinigung ? Grundwasserschutz ? Grundwasserverunreinigung ? Stress ? Organisches Material ? Organische Verbindung ? Abiotischer Faktor ? Bodenschutz ? Chemikalien ? Grundwasserleiter ? Hydrolyse ? Reaktionsmechanismus ? Reaktor ? Organischer Schadstoff ? Studie ? Grundwasser ? Tonmineral ? Chemische Reaktion ? Mineral ? Reaktionskinetik ? Argile ? Modele ? Polluants organiques ? Ton [Mineral] ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1992-05-01 - 1995-05-30
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