Record Display for the EPA National Library Catalog

RECORD NUMBER: 293 OF 1150

OLS Field Name OLS Field Data
Main Title Electrochemical Activation and Regeneration of Carbon Surfaces for Tertiary Water Treatment.
Author Will, George B. ;
CORP Author Virginia Polytechnic Inst. State Univ., Blacksburg. Dept. of Chemical Engineering.
Year Published 1971
Report Number DI-14-31-0001-3247; OWRR-A-032-VA; 12324,; A-032-VA(1)
Stock Number PB-202 628
Additional Subjects ( Activated carbon treatment ; Regeneration(Engineering)) ; ( Sewage treatment ; Activated carbon treatment) ; ( Chemical removal(Sewage treatment) ; Pesticides) ; ( Water pollution ; Pesticides) ; Electrochemistry ; Halohydrocarbons ; Herbicides ; Dieldrin ; Activation ; Surface chemistry ; Oxidation ; Absorption ; Chlorine organic compounds ; Tertiary sewage treatment
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-202 628 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 12p
Abstract
Electrochemical activation of wetted carbon surfaces was accomplished by anodic oxidation of 20% hydrochloric acid to evolve chlorine at the surface to be activated. Current densities in the range of 0 to 125 milliamps per square centimeter were employed and increases in apparent absorptivity as determined by polarization currents were as high as factors of 30 to 50. In pilot scale studies it was found that most of the absorptive capacity of the carbon surfaces was interior to the wetted surface and that the capacity of the activated surface was only about 10% greater than that of untreated surfaces for service in removing the persistent pesticide Dieldrin from otherwise potable water. Spent carbon surfaces were returned to their initial capacity following electroactivation. (Author)