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DESIGN OF RAPID SMALL-SCALE ADSORPTION TESTS FOR A CONSTANT DIFFUSIVITY
Citation:
Crittenden, J., J. Berrigan, AND D. Hand. DESIGN OF RAPID SMALL-SCALE ADSORPTION TESTS FOR A CONSTANT DIFFUSIVITY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-86/133.
Description:
The rapid small-scale column test (RSSCT), a physical model of a fixed bed, was developed and evaluated experimentally to simulate full-scale adsorber performance. The RSSCT can simulate months of full-scale adsorber operation in several days; however, some isotherms and kinetic data are required for design. The dispersed flow, pore surface diffusion model (DFPSDM) was used to determine the proper adsorbent particle size, hydraulic loading, and empty-bed contact time of the RSSCT from the data from the full-scale adsorber. The experimental RSSCT breakthrough profiles for a six-solute mixture at influent concentrations between 3000 and 6000 micrograms/l were identical to those of a pilot-scale column test.