Main Title |
In-Flight Capture of Elemental Mercury by a Chlorine-Impregnated Activated Carbon. |
Author |
Ghorishi, S. B. ;
Keeney, R. M. ;
Jozewicz, W. S. ;
Serre, S. D. ;
Gullett, B. K. ;
|
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-99-201; EPA/600/A-01/058; |
Stock Number |
PB2001-107760 |
Additional Subjects |
Air pollution control ;
Mercury(Metal) ;
Activated carbon ;
Adsorption ;
Emission ;
Flue gases ;
Chlorine ;
Sorbent ;
Combustion ;
Particles sizes ;
Stationary sources ;
Temperature ;
Lignite ;
Coal products ;
Air entrainment ;
Boilers ;
Flow reactor ;
Elemental mercury
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB2001-107760 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
16p |
Abstract |
The paper discusses the in-flight capture of elemental mercury (Hgo) by a chlorine (CI)-impregnated activated carbon. Efforts to develop sorbents for the carbons using dilute solutions of hydrogen chloride (HCI) leads to substantial increases in Hg capture. HCI treatment at ambient temperature of a commonly used, commercially available activated carbon-DARCO FGD, NORIT Americas, Inc.-has previously been shown to result in significant improvement in the fixed-bed capture of Hgo and mercuric chloride (HgC12). In the study presented here, the C1-impregnation process was optimized for Hg capture based on comparative testing in a bench-scale, fixed-bed Hgo absorption system. The optimized sorbent was then produced on a larger scale (5 lb per batch) and tested for in-flight, short-time-scale capture of Hgo in a flow reactor. The sorbent was entrained in Hgo-laden flue gases of varied compositions with gas/solid contact times of about 3-4 s. C1-impregnated FGD exhibited significant Hgo removal (80-90%), compared to virgin FGD (10-15%), across the whole range of very low carbon-to-mercury weight ratios (1000-1 to 5000-1). Preliminary cost estimates indicated that approximately 53% reduction of the total annual cost of Hg control could be possible when using C1-impregnated FGD. |
Supplementary Notes |
Presented at the Annual Air and Waste Management Association (AWMA) Conference, Orlanda, FL, June 24-28, 2001. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
Availability Notes |
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Category Codes |
68A; 81A; 99B; 97I |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/13 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
028203720 |
Origin |
NTIS |
Type |
CAT |