Record Display for the EPA National Library Catalog

RECORD NUMBER: 25 OF 32

Main Title Sorption of Elemental Mercury by Activated Carbons.
Author Krishnan, S. V. ; Gullett, B. K. ; Jozewicz, W. ;
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1994
Year Published 1994
Report Number EPA-68-D0-0141; EPA/600/J-94/378;
Stock Number PB95-125522
Additional Subjects Activated carbon ; Mercury(Metal) ; Pollution control ; Sorption ; Chemisorption ; Desorption ; Surface properties ; Stationary sources ; Concentration(Composition) ; Reprints ; Physisorption
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB95-125522 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Abstract
The paper gives results of a study of the mechanisms and rate of elemental mercury (Hg) capture by activated carbons, using a bench-scale apparatus. Three types of activated carbons, two thermally activated (PC-100 and FGD) and one impregnated with elemental sulfur (S) (HGR), were used to study the effects of surface area (approximately 550-1000 sq m/g), sorption temperature (23-140 C), and elemental Hg concentration (30 and 60 ppb of elemental Hg in nitrogen). Investigations revealed that sorption occurs in active sites in PC-100 and FGD which are either depleted or deactivated at 140 C. Desorption studies for PC-100 and HGR revealed the sorption mechanism to be a combination of physisorption and chemisorption at 23 C, whereas chemisorptionis the primary route at 140 C.