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- W2334626491 abstract "Permeable Reactive barriers (PRBs) constitute an in situ technique of remediation which has been largely applied for two decades. Their originality relies on the treatment of contaminated groundwater thanks to natural gradients and without any energy. Nevertheless, natural gradients are most of the time limited to dozens of centimetres and the filters should be carefully designed to prevent any bypass of the PRB. Face to this problem, an innovative radial filter has been designed to reduce the head loss comparatively to classical filters with axial flow and to improve the contact time from a chemical point of view. The new filter is cylindrical and composed of a core of coarse material, surrounded by a reactive material and a final ring of coarse material. The radial flow can be centripetal or centrifugal depending on the hydraulic heads applied to the filter. Based on numerical simulations and analytical solutions, we have demonstrated that the new configuration could improve the lifetime of a PRB and, in a centripetal configuration, improve the contact time where the groundwater is the most contaminated. These developments constitute an improvement of the existing PRBs and extent their applications." @default.
- W2334626491 created "2016-06-24" @default.
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- W2334626491 date "2012-01-01" @default.
- W2334626491 modified "2023-10-16" @default.
- W2334626491 title "Radial Filtration in Permeable Reactive Barriers" @default.
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- W2334626491 doi "https://doi.org/10.11159/ijepr.2012.015" @default.
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