The fate and transport of viruses in the subsurface aquatic environment depends strongly upon variations in water content. In order to predict virus concentrations in potential drinking water, a literature review was done on the attachment and detachment mechanisms during drainage and imbibition events. In addition, a model was created based upon available data from virus transport in a column experiment. In the model, variable detachment rates were incorporated in order to estimate virus concentration. It was shown that this model could predict virus concentrations more reliably than previous models with constant detachment rates
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