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| Titel |
Mathematical modeling of bacteria and clay co-transport in porous media |
| VerfasserIn |
Ioanna A. Vasiliadou, Constantinos V. Chrysikopoulos |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250037606
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| Zusammenfassung |
| The present study focuses on Pseudomonas putida bacteria transport in porous media in the
presence of suspended kaolinite clay particles. Experiments were performed with
bacteria and kaolinite particles separately to determine their individual transport
characteristics in water saturated columns packed with glass beads. The results indicate
that the mass recovery of bacteria and clay particles decreased as the pore water
velocity decreased. Batch experiments were carried out to investigate the adsorption of
Pseudomonas putida onto kaolinite particles. The adsorption process is adequately
described by a Langmuir isotherm. Finally, bacteria and kaolinite particles were injected
simultaneously into a packed column in order to investigate their co-transport behavior. The
experimental data suggest that the presence of clay particles significantly inhibit the
transport of bacteria in water saturated porous media. The observed reduction of
Pseudomonas putida recovery at the column exit is attributed to bacteria attachment
onto kaolinite particles, which are retained onto the solid matrix of the column.
A mathematical model was developed to describe the transport of bacteria in the
presence of suspended clay particles in one-dimensional water saturated porous
media. Model simulations are in good agreement with the experimental results. |
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