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Development of a Functionalised Polymer-Coated Silica for the Removal of Uranium from Groundwater

Bryant, D.E., Stewart, D.I., Kee, T.P. and Barton, C.S. (2003) Development of a Functionalised Polymer-Coated Silica for the Removal of Uranium from Groundwater. Environmental Science and Technology, 37 (17). pp. 4011-4016. ISSN 0013-936X

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Abstract

A new active material for the treatment of uranium contaminated groundwater using permeable reactive barriers has been developed. This material, called PANSIL, is an example of a tailored ligand system that selectively removes a contaminant from solution. The active medium in PANSIL is a polyacryloamidoxime resin derived from polyacrylonitrile, which is deposited from solution onto the surface of quartz sand to form a thin film coating. PANSIL is highly effective at sequestering UO22+ from solution when the pH is between about 5 and 8 and can preferentially sequester UO22+ from solutions that are typical of the groundwater from a mine tailings site, due to the stability of the polyacryloamidoxime uranyl complex formed. Uranium sequestration capacity will depend on the surface area of the sand that is resin coated, but in the batch of PANSIL tested (<2% resin by weight), it exceeds 4000 mg of UO2 per kg of PANSIL at pH 4.5 when the dissolved UO22+ concentration is greater than 300 mg/L. PANSIL largely retains the permeability and strength of the sand employed and therefore has suitable engineering properties for permeable reactive barrier applications.

Item Type: Article
Copyright, Publisher and Additional Information: © 2003 American Chemical Society.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds)
Depositing User: Douglas I Stewart
Date Deposited: 30 Jun 2006
Last Modified: 08 Feb 2013 17:02
Published Version: http://dx.doi.org/10.1021/es020178g
Status: Published
Publisher: American Chemical Society
Refereed: Yes
Identification Number: 10.1021/es020178g
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1331

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