Record Display for the EPA National Library Catalog

RECORD NUMBER: 469 OF 1214

OLS Field Name OLS Field Data
Main Title Evaluation of the Middas System for Development of Design Data for GAC Adsorbers.
Author Weber, W. J. ; Carter, M. C. ; Olmstead, K. P. ; Katz., L. E. ;
CORP Author Michigan Univ., Ann Arbor.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Sep 91
Year Published 1991
Report Number EPA-R-814135-01-0; EPA/600/2-91/048;
Stock Number PB91-234617
Additional Subjects Activated carbon treatment ; Water treatment ; Potable water ; Adsorption ; Isotherms ; Performance evaluation ; Transport properties ; Water pollution ; Hazardous materials ; Chlorobenzenes ; Chlorohydrocarbons ; Micro Diameter Depth Adsorption System
Holdings
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Status
NTIS  PB91-234617 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/26/1991
Collation 93p
Abstract
The Micro-Diameter-Depth Adsorption System (MIDDAS) was evaluated for its usefulness in determining equilibrium parameters for adsorption in granular activated carbon (GAC) systems. The system employs a column configuration for determining such parameters, rather than the traditional completely mixed batch reaction (CMBR) configuration. The equilibrium results were employed in the Homogeneous Surface Diffusion Model (HSDM) in conjunction with the Short Bed Adsorber (SBA) technique to determine rate parameters for trichloroethylene (TCE) adsorption in GAC in both single-solute and more complex systems. These calibrated rate parameters were used in subsequent verification studies with deep adsorption beds; the results indicated that rate parameters determined using the MIDDAS technique tended to provide better predictions of deep bed behavior compared to those determined with the CMBR methodology.