Monitoring reverse osmosis membrane integrity and virus rejection in water reuse
| Autor: | Pype, Marie-Laure |
|---|---|
| Přispěvatelé: | Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), University of Queensland [Brisbane], Université Montpellier 2 (Sciences et Techniques), Dominique Patureau, Nathalie Wéry, Wolfgang Djernjak |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
susbstitut de virus
membrane fouling vieillissement membranaire source alternative d'eau potable [SDV]Life Sciences [q-bio] pollution de l'eau virus water reuse osmose inverse virus surrogate reverse osmosis membrane integrity indicators membrane integrity santé publique matière organique dissoute membrane ageing colmatage des membranes intégrité des membranes à osmose inverse [SDE]Environmental Sciences effluent contamination de l'eau recyclage de l'eau |
| Zdroj: | Monitoring reverse osmosis membrane integrity and virus rejection in water reuse, University of Queensland [Brisbane](2013) Life Sciences [q-bio]. University of Queensland [Brisbane]; Université Montpellier 2 (Sciences et Techniques), 2013. English |
| Popis: | This study showed the impact of fouling and ageing of reverse osmosis (RO) membranes on the rejection of different compounds to improve our understanding on virus rejection mechanisms. Dissolved organic matter (DOM) is generally used as an indicator of water quality. Thus, in combination with electrical conductivity profiling, the potential monitoring of DOM by three-dimensional fluorescence to detect membrane breaches was firstly investigated. It was demonstrated that DOM could be used as new membrane integrity indicator. Then, the rejections of one virus surrogate (MS2 phage) and four membrane integrity indicators (DOM, rhodamine WT, sulphate and salt) were studied with intact and impaired membranes using lab-scale set-ups. It was concluded that the presence of organic foulants on the membrane surface caused a decrease of the water permeability and an increase of compounds rejection by improving size exclusion mechanism. On the other hand, scaling did not have an impact on their rejection even if the water permeability decreased. Moreover, a chlorine exposure of 9000 ppm•h NaOCl at pH 7 caused a drop of the water permeability and compounds rejection. However, the exact modifications of the membrane surface chemistry caused by chlorine exposure are still not well understood. To conclude, statistical analysis of the data obtained during this study permitted to propose a new combination of testing techniques to monitor RO membrane. |
| Databáze: | OpenAIRE |
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