Selective removal of dissolved uranium in drinking water by nanofiltration

A procedure for the selective removal of uranium traces dissolved in drinking water has been studied. Plate module membrane filtration equipment was operated to evaluate the performance and selectivity of three different nanofiltration flat-sheet membranes. Experiments were carried out using various...

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Veröffentlicht in:Water research (Oxford) 2008-02, Vol.42 (4), p.1160-1166
Hauptverfasser: Favre-Réguillon, A., Lebuzit, G., Murat, D., Foos, J., Mansour, C., Draye, M.
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container_end_page 1166
container_issue 4
container_start_page 1160
container_title Water research (Oxford)
container_volume 42
creator Favre-Réguillon, A.
Lebuzit, G.
Murat, D.
Foos, J.
Mansour, C.
Draye, M.
description A procedure for the selective removal of uranium traces dissolved in drinking water has been studied. Plate module membrane filtration equipment was operated to evaluate the performance and selectivity of three different nanofiltration flat-sheet membranes. Experiments were carried out using various commercial mineral waters with distinct physicochemical compositions. The membranes were first discriminating by their ability to reject uranium in the presence of the main cations found in mineral waters, using a 2 mg L −1 (2000 ppb) concentration of uranium. The rejection of U(VI) was dependent on the uranyl speciation and the ionic strength. Second, removal of uranium traces (0.02 mg L −1, 20 ppb) was performed using the nanofiltration membrane showing the highest selectivity for uranium toward alkaline and alkaline-earth ions. The results showed a high performance of the nanofiltration membrane, Osmonics DL, for selective uranium rejection at low pressure (1 bar), illustrating the advantage of nanofiltration for the selective removal of uranium from drinking water.
doi_str_mv 10.1016/j.watres.2007.08.034
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source MEDLINE; Elsevier ScienceDirect Journals Complete
subjects Applied sciences
artificial membranes
cations
chemical speciation
Drinking water
Exact sciences and technology
filters
filtration
hydrochemistry
ionic strength
Membrane
mineral content
Nanofiltration
Nylons
Other industrial wastes. Sewage sludge
Pollution
Polymers
Rejection mechanism
Remediation
Sulfones
Ultrafiltration
Uranium
Uranium - isolation & purification
uranyl compounds
Wastes
Water Pollutants, Radioactive - isolation & purification
water pollution
Water Purification - instrumentation
Water Purification - methods
Water Supply
Water treatment and pollution
title Selective removal of dissolved uranium in drinking water by nanofiltration
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