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| Titel |
Experimental investigation of viruses and clay particles cotransport in unsaturated porous media |
| VerfasserIn |
Vasiliki I. Syngouna, Constantinos V. Chrysikopoulos |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250089273
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| Publikation (Nr.) |
 EGU/EGU2014-3470.pdf |
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| Zusammenfassung |
| Suspended clay particles in groundwater can play a significant role as carriers of viruses,
because, depending on the physicochemical conditions, clay particles may facilitate or hinder
the mobility of viruses. This study examines the effects of clay colloids on the transport
of viruses in variably saturated porous media. All cotransport experiments were
conducted in partially saturated columns packed with glass beads, using bacteriophages
MS2 and ΦX174 as model viruses, and kaolinite (KGa-1b) and montmorillonite
(STx-1b) as model clay colloids. The various experimental collision efficiencies
were determined using the classical colloid ?ltration theory. The experimental data
indicated that the mass recovery of viruses and clay colloids decreased as the water
saturation decreased. Temporal moments of the various breakthrough concentrations
collected, suggested that the presence of clays significantly influenced virus transport
and irreversible deposition onto glass beads. The mass recovery of both viruses,
based on total effluent virus concentrations, was shown to reduce in the presence of
suspended clay particles. Furthermore, the transport of both suspended and attached onto
suspended clay-particles viruses was retarded, compared to the conservative tracer. |
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