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Appl. Environ. Microbiol., Mar 1997, 978-982, Vol 63, No. 3
F Quignon, M Sardin, L Kiene and L Schwartzbrod
A pilot-scale study was initiated to examine the behavior of viruses pulse
injected into a distribution system. The influence of a free-chlorine
residual and that of virus preadsorption to clay particles was evaluated by
tracing the viruses both in the water flow and after elution from the
biofilm. These experiments demonstrated, first, that virus preadsorption on
40 mg of Na-montmorillonite per liter increased the residence time of the
viruses within the pilot plant by roughly three times and, second, that
preadsorption to clay did not prevent viruses from being inactivated by
chlorine. Moreover, with no clay added, a greater amount of viruses was
recovered from the biofilm than from the water flow (by a factor of 2 or 10
in the absence or presence of chlorine, respectively), indicating a
tendency for virus accumulation within biofilms.
Copyright © 1997, American Society for Microbiology
Poliovirus-1 Inactivation and Interaction with Biofilm: a Pilot-Scale Study
Laboratoire de Virologie, Universite Henri Poincare, and Laboratoire des Sciences du Genie Chimique, CNRS, ENSIC, 54001 Nancy Cedex, and CIRSEE, Lyonnaise des Eaux, 78230 Le Pecq, France
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