Record Display for the EPA National Library Catalog


Main Title Simultaneous Control of Hg(o), SO2, and NOx by Novel Oxidized Calcium-Based Sorbents.
Author Ghorishi, S. B. ; Singer, C. F. ; Jozewicz, W. S. ;
CORP Author ARCADIS Geraghty and Miller, Durham, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Publisher 2001
Year Published 2001
Report Number EPA-68-C-99201; EPA/600/A-01/064;
Stock Number PB2002-100294
Additional Subjects Air pollution control ; Mercury(Metal) ; Sulfur dioxide ; Nitrogen dioxide ; Sorbents ; Coal ; Calcium ; Flue gas4es ; Lime ; Emissions ; Stationary sources ; Calcium-based sorbents
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2002-100294 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 16p
The paper gives results of an investigation of two classes of calcium (Ca)-based sorbents (hydrated limes and silicate compounds). (NOTE: Efforts to develop multipollutant control strategies have demonstrated that adding certain oxidants to different classes of Ca-based sorbents significantly improves the removal of elemental mercury vapor (Hgo), sulfur dioxide (SO2), and nitrogen oxides (NO-x) from simulated flue gases). A number of oxidizing additives were used at different concentrations in the Ca-based sorbent process. The Hgo, SO2, and NO-x capture capacities of these oxidant-enriched sorbents were evaluated and compared to those of a commercially available activated carbon in bench-scale, fixed-bed, and fluid-bed systems. Ca-based sorbents prepared with two oxidants, designated C and P, exhibited Hgo sorption capacities (about 100 ug/g) comparable to that of the activated carbon; they showed far superior SO2 and NO-x sorption capacities. Preliminary cost estimates for the process utilizing these novel sorbents indicate potential for substantial lowering of Hgo, SO2, and NO-x emissions from coal-fired boilers. The implications of these findings toward development of multipollutant control technologies are summarized.