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Assessing Arsenic Removal by Metal (Hydr)Oxide Adsorptive Media Using Rapid Small Scale Column Tests
Citation:
WESTERHOFF, P. K., T. M. BEAN, A. C. CHEN, L. WANG, AND L. J. CUMMING. Assessing Arsenic Removal by Metal (Hydr)Oxide Adsorptive Media Using Rapid Small Scale Column Tests. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-08/051, 2008.
Impact/Purpose:
to present information
Description:
The rapid small scale column test (RSSCT) was use to evaluate the the performance of eight commercially available adsorptive media for the removal of arsenic. 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. The media tested, including three iron oxide-based media (i.e., E33, ARM 200, and KemIron), one iron hydroxide-based media (i.e., granular ferric hydroxide or GFH), one iron modified activated alumina (i.e., AAFS50), two titania-based media (i.e., MetsorbG and AdSorbsia granular titania oxide [GTO]), and one hybrid ion exchange resin (HIX)-based media (i.e., ArsenXnp). This report describes the testing procedure and presents the test results.