Method for Coating Filter Media with Synthetic Manganese Oxide
Publication: Journal of Environmental Engineering
Volume 123, Issue 7
Abstract
A method was developed to coat anthracite and sand filter media with synthetic manganese oxides. The two-stage method used a stirred tank reactor followed by a recirculating flow fixed-bed reactor. Treated anthracite developed encapsulating coatings of manganese oxides up to 30-μm thick, at loadings over 4 mg/g−1 extractable Mn2+. Media were characterized by BET surface area analysis and electron microscopy. Laboratory-scale column tests confirmed the efficient Mn-removal capability of the synthetically coated media in adsorption and oxidation modes. This method may help improve the removal of Mn2+ from drinking water and hazardous effluents by filtration with oxide-coated media.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 123 • Issue 7 • July 1997
Pages: 642 - 649
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jul 1, 1997
Published in print: Jul 1997
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