Iron oxide-coated fibrous sorbents for arsenic removal

Iron oxide‐coated sand has been demonstrated to be an effective adsorbent material for the removal of arsenic and other metals and metalloids from drinking water and wastewater. In this study, fibrous materials were evaluated for their ability to offer a high specific surface area alternative to san...

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Bibliographic Details
Published in:Journal - American Water Works Association 2008-04, Vol.100 (4), p.151-164
Main Authors: KUMAR, ARUN, GURIAN, PATRICK L., BUCCIARELLI-TIEGER, ROBIN H., MITCHELL-BLACKWOOD, JADE
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbents
Adsorption
Arsenates
Arsenic
Arsenic removal
Carbon fibers
Cellulose
Coatings
Drinking water
Fabric analysis
Fiberglass
Fibers
Groundwater
Hydrochloric acid
Insulation
Iron
Iron compounds
Iron oxides
Oxidation
Permeability
Pollutant removal
Polyesters
Polyethylene
Sand
Sand & gravel
Sorbents
Studies
Surface areas
Water treatment
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Summary:Iron oxide‐coated sand has been demonstrated to be an effective adsorbent material for the removal of arsenic and other metals and metalloids from drinking water and wastewater. In this study, fibrous materials were evaluated for their ability to offer a high specific surface area alternative to sand as the substrate for the iron oxide coating. Four types of fibrous materials, polypropylene, polyester, fiberglass, and cellulose, were evaluated for their ability to retain iron coatings and to remove arsenate. Sand was also evaluated to provide a basis for comparison with previous research. In isotherm experiments, all four fibrous materials showed higher arsenate adsorption densities than iron oxide‐coated sand. Arsenate adsorption densities were highest for iron oxide‐coated fiberglass and cellulose, suggesting that these fibrous materials may offer advantages over iron oxide‐coated sand.
ISSN:0003-150X
1551-8833
DOI:10.1002/j.1551-8833.2008.tb09611.x