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Bioclogging in porous media
Groups at IfU
Chair of Groundwater and Hydromechanics
Chair of Hydrology and Water Resources Management
Chair of Urban Water Management
Chair of Ecological Systems Design
Chair of Earth Observation and Remote Sensing
Bacterial growth processes can lead to clogging in porous media. This has been observed frequently in laboratory soil columns. It has not been shown beyond doubt in the field. A carefully monitored experiment in a quasi 2 D flow is performed and clogging is visualized. It is shown that not only the cell mass but extra-cellular substances contribute to clogging. The experiment is evaluated with a coupled numerical model. In a more theoretical approach the minimum requirements for clogging are analyzed with percolation theory methods.
Main publications
Thullner, M., M. H. Schroth, J. Zeyer, W. Kinzelbach, 2004. Modeling of a microbial growth experiment with bioclogging in a two-dimensional saturated porous media flow field. J. of Cont. Hydrology, 70 (1-2): 37-62
Thullner, M., J. Zeyer, W. Kinzelbach, 2002. Influence of microbial growth on hydraulic properties of pore networks. Transport in Porous Media (49), p. 99-122
Contacts
Agency/Funding
ETH/256 kCHF
Partners
ITOe, ETH Zurich
Status
Finished in 2001
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