COLL 83 |
| Bacterial transport and adhesion in porous media is relevant to the maintenance of clean groundwater supplies in terms of both pathogen control and in situ bioremediation. This talk presents an approach based on the colloid filtration theory (CFT) for modeling the fundamental mechanics of the transport and adhesion processes. CFT presumes that macroscale transport behavior can be deduced from an analysis of cell transport in the pore space surrounding a single porous media grain. The work presented here differs from classical CFT by describing particle transport in a fully Lagrangian manner and by using a different upscaling approach (based on the Happel instead of the isolated sphere model) to translate the pore-scale analysis to laboratory column scale observations. The Lagrangian mechanics include chemotaxis and the interactions of cell polymers with the solid surface. The upscaling approach provides a more accurate description of the transport (to solid surface) and adhesion steps. |
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Structure, Interactions and Reactivity at Microbial Surfaces
2:00 PM-5:20 PM, Sunday, 10 September 2006 Sir Francis Drake -- Windsor Room, Oral
Division of Colloid & Surface Chemistry |