Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Final rept. Sep 79-Aug 81.
Author Eppig, Christopher P. ; de Filippi, Richard P. ; Murphy, Rosemary A. ;
CORP Author Little (Arthur D.), Inc., Cambridge, MA.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-68-02-3185; EPA-600/2-82-067;
Stock Number PB82-228974
Additional Subjects Air pollution control ; Activated carbon ; Recirculation ; Desorption ; Distillation ; Ethyl alcohol ; Methyl ethyl ketone ; Cost analysis ; Operating costs ; Solvents ; Waste recycling ; Supercritical fluids ; Volatile organic compounds ; Solid wastes
Library Call Number Additional Info Location Last
NTIS  PB82-228974 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 116p
The report gives results of a program to develop a sound fundamental technical base for supercritical-fluid regeneration of activated carbon applied to adsorption of volatile organic compounds. The process is based on using a supercritical fluid to desorb granular activated carbon containing adsorbed vapor contaminants. The desorption is at high pressure, and is followed by distillation of the fluid/adsorbate mixture at subcritical conditions for removing contaminants and recovering fluid solvent for recycle. Key unit operations characterized were (1) desorption from the carbon bed, and (2) distillation of the solvent/adsorbate solution. The process was characterized for both leaded and unleaded gasoline vapors, representing contaminants from gasoline storage and distribution facilities; and for ethanol and methyl ethyl ketone (MEK) vapors, representing many solvent finishing operations.