FOR 409: Mobilisation mechanisms of colloids in urban soils and their relevance for the leaching of pollutants
Description:
Recent studies emphasize the relevance of colloid-bound transport of pollutants in soils. Elevated Na concentrations of the soil solution and extreme drying and re-wetting cycles might increase the dispersibility and stability of colloids in urban soils. The water regime of urban soils, being characterized by a high proportion of preferential flow, increases the risk of the break-through of colloids into the groundwater. Studies on colloid-facilitated transport in urban soils do not exist until now. The aim of our subproject is to investigate the effect of drying and re-wetting on the mobilisation of colloids paying special attention to the hydrophobicity of colloids. Besides, we will elucidate the relevance of biofilms for colloid (im)mobilisation.
Executive Institute:
Institute for Ecology Details of Institute for Ecology
Parent institution:
Berlin Institute of Technology (TUB) Details of (TUB) (Berlin)
Contract period:
01. 01. 2004 - 01. 01. 2007
Collaborative Project:
FOR 409: Dynamics of water and materials in urban locations Details of FOR 409: Dynamics of water and materials in urban locations
Funding Programme:
- DFG Research Unit Details of DFG Research Unit
Subject:
- Soil science
Purpose of research:
Basic research
Funding Institutions:
- German Research Council (DFG) (DFG) Details of (DFG)
Project Management Agency:
- German Research Council (DFG) (DFG) Details of DFG