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Title: Fate of heavy metals in sediments contaminated by former industrial activities.: influence of grainsize en contamination source
Authors: Cappuyns, ValĂ©rie
Swennen, Rudy
Issue Date: 2009
Host Document: Young Scientists Day of the Belgian Soil Science Society- Abstracts
Conference: Young Scientists Day of the Belgian Soil Science Society location:Brussels, Royal Academy for Science and Letters date:25 February 2009
Abstract: The understanding of the behaviour and fate of contaminants in soils and sediments is essential to deal with their management. In the present study, heavy-metal contaminated anoxic sediments with different physico-chemical properties and originating from different locations (nl. The Dijle and the Nete catchment) were exposed to oxidizing conditions. The evolution of sediment properties and porewater composition during sediment ripening was monitored during 20 weeks. This study illustrates that total metal concentrations in sediments are not a good criterion to evaluate the risk of heavy metal release from the oxidising sediments to the environment, as a more important release of heavy metals is sometimes observed in sediments with a lower total metal content The clay content of the samples, together with their acid neutralizing capacity, and the precipitation of secondary minerals were important parameters that influenced porewater composition during oxidation and ripening.
Publication status: published
KU Leuven publication type: AMa
Appears in Collections:Division of Geology
Research Centre for Economics and Corporate Sustainability, Campus Brussels
Faculty of Economics and Business (FEB) - miscellaneous

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