LrgpV1, Istex, Curation, bibRecord, 000371

Virus behaviour within a distribution system

Identifieur interne : 000371 ( Istex/Curation ); précédent : 000370; suivant : 000372

Virus behaviour within a distribution system

Auteurs : F. Quignon [France] ; L. Kiene [France] ; Y. Levi [France] ; M. Sardin [France] ; L. Schwartzbrod [France]

Source :

Water Science and Technology [ 0273-1223 ] ; 1997.

RBID : ISTEX:530D95B2ACEF333007DFF61C16D7140098A5DFD8

Descripteurs français

Wicri :
- topic : Eau potable.

English descriptors

Abstract

Abstract: If viruses are introduced into a drinking water distribution system they will be submitted to various phenomena, including inactivation, aggregation, adsorption but the actual inactivation rate is impossible to estimate. A pilot-scale study evaluated the behaviour of viruses sporadically introduced into a distribution system. In particular, phenomena such as virus adsorption onto clay particles or onto pilot surfaces covered by a biofilm, which could provide viruses with a protection against trace amounts of residual disinfectants were studied. Poliovirus 1, pre-adsorbed or not on particles of Na-montmorillonitc, was pulse-injected into a pilot distribution system and traced both in the water flow and in the biofilm. The viral responses observed in the water flow at the pilot outlet can be described by a Gamma law or by an analytical model that includes both viral inactivation and adsorption to the biofilm. Pre-adsorption on 40mg/l Na-montmorillonite increases about 3-fold the residence time of the viruses within the pilot. In the presence of chlorine, pre-adsorption on clay does not prevent chlorine inactivation of viruses. In every case, a greater amount of viruses is recovered from the biofilm than from the water flow, by a 2-fold or by a 10-fold factor in the absence or presence of chlorine, respectively. Viral adsorption to biofllm is thus a leading phenomenon that, along with viral inactivation, directs the fate of the viruses introduced into a distribution system and, in particular, allows for their accumulation within the biofllm.

Url:

https://api.istex.fr/document/530D95B2ACEF333007DFF61C16D7140098A5DFD8/fulltext/pdf

DOI: 10.1016/S0273-1223(97)00278-3

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ISTEX:530D95B2ACEF333007DFF61C16D7140098A5DFD8

Le document en format XML

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<term>Biofilm development</term>
<term>Biofilm samples</term>
<term>Bioflim</term>
<term>Chlorine concentration</term>
<term>Chlorine inactivation</term>
<term>Clay particles</term>
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<term>Nancy cedex</term>
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<term>Overall amount</term>
<term>Pilot outlet</term>
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<term>Protective effect</term>
<term>Quignon</term>
<term>Retention time</term>
<term>Retention times</term>
<term>Saline tracer</term>
<term>Stationary phase</term>
<term>Time intervals</term>
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<term>Vanden bossche</term>
<term>Viral</term>
<term>Viral adsorption</term>
<term>Viral concentration</term>
<term>Viral inactivation</term>
<term>Viral responses</term>
<term>Virus</term>
<term>Virus behaviour</term>
<term>Virus recovery</term>
<term>Virus retrieval</term>
<term>Virus transfer</term>
<term>Viruses display</term>
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<term>Water distribution systems</term>
<term>Water flow</term>
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<term>adsorption</term>
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<term>viruses</term>
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<term>Experimental data</term>
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<term>Free chlorine</term>
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<term>Inactivation</term>
<term>Inactivation rate</term>
<term>Nancy cedex</term>
<term>Numerical integration</term>
<term>Overall amount</term>
<term>Pilot outlet</term>
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<term>Protective effect</term>
<term>Quignon</term>
<term>Retention time</term>
<term>Retention times</term>
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<term>Time intervals</term>
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<term>Viral adsorption</term>
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<term>Viral inactivation</term>
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<term>Virus recovery</term>
<term>Virus retrieval</term>
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<front><div type="abstract" xml:lang="en">Abstract: If viruses are introduced into a drinking water distribution system they will be submitted to various phenomena, including inactivation, aggregation, adsorption but the actual inactivation rate is impossible to estimate. A pilot-scale study evaluated the behaviour of viruses sporadically introduced into a distribution system. In particular, phenomena such as virus adsorption onto clay particles or onto pilot surfaces covered by a biofilm, which could provide viruses with a protection against trace amounts of residual disinfectants were studied. Poliovirus 1, pre-adsorbed or not on particles of Na-montmorillonitc, was pulse-injected into a pilot distribution system and traced both in the water flow and in the biofilm. The viral responses observed in the water flow at the pilot outlet can be described by a Gamma law or by an analytical model that includes both viral inactivation and adsorption to the biofilm. Pre-adsorption on 40mg/l Na-montmorillonite increases about 3-fold the residence time of the viruses within the pilot. In the presence of chlorine, pre-adsorption on clay does not prevent chlorine inactivation of viruses. In every case, a greater amount of viruses is recovered from the biofilm than from the water flow, by a 2-fold or by a 10-fold factor in the absence or presence of chlorine, respectively. Viral adsorption to biofllm is thus a leading phenomenon that, along with viral inactivation, directs the fate of the viruses introduced into a distribution system and, in particular, allows for their accumulation within the biofllm.</div>
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Virus behaviour within a distribution system

Virus behaviour within a distribution system

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri