| Title: |
Assessing Arsenic Removal by Metal (Hydr)Oxide Adsorptive Media Using Rapid Small-Scale Column Tests
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| Resource Type: |
document --> technical publication --> report
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| Country: |
USA
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| Year: |
2008 |
| Availability: |
EPA/600/R-08/051 April 2008
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| Author 1/Producer: |
US Environmental Protection Agency
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| Author / Producer Type: |
Agency, regulator or other governmental or inter-governmental body
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| Format (e.g. PDF): |
PDF
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EUGRIS Keyword(s): |
Contaminated land-->Contaminants-->Heavy metals
Contaminated land-->Remediation options-->Remediation options overview
Diffuse pollution-->Processes
Groundwater protection-->Groundwater protection overview
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| Short description: |
EXTRACT: The conventional way of selecting adsorptive media has been based on the results of long-term pilot-plant studies. To reduce time required and save cost, it was desirable to develop new or utilize existing rapid, small-scale methods to evaluate media performance. Preliminary studies have been recently conducted using a rapid small-scale column test (RSSCT) method that was originally developed for evaluating the performance of granular activated carbon. The results of these studies have shown that the RSSCT method, which usually requires only three to four weeks of testing, has the potential to predict the performance of full-scale systems. If proven to be true, this method would provide the water industry with a lower cost alternative to develop performance data necessary for full-scale system design.
Battelle was contracted by EPA to evaluate the usefulness of this short-term predictive method. Side-by-side tests were conducted using RSSCTs and pilot/full-scale systems either in the field or in the laboratory. The test locations included six EPA arsenic removal technology demonstration sites and one EPA pilot-scale test site. For each location, RSSCTs were conducted using at least three parallel test columns packed with different adsorptive media to compare arsenic breakthrough of the small-scale columns to the pilot/full-scale systems.
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Submitted By:
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Professor Paul Bardos WhoDoesWhat?
Last update: 02/07/2008
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