| Main Title |
Role of HC1 in Adsorption of Elemental Mercury Vapor by Calcium-Based Sorbents. |
| Author |
Ghorishi, B. ;
Gullett, B. K. ;
Jozewicz, W. ;
Kozlowski, W. ;
|
| CORP Author |
ARCADIS Geraghty and Miller, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
| Publisher |
1999 |
| Year Published |
1999 |
| Report Number |
EPA-68-C-99-201; EPA/600/A-99/060; |
| Stock Number |
PB99-171548 |
| Additional Subjects |
Air pollution ;
Mercury(Metal) ;
Sorbents ;
Vapors ;
Sorption ;
Calcium ;
Hydrogen chloride ;
Gypsum ;
Stationary sources ;
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB99-171548 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
22p |
| Abstract |
The paper gives results of a study to identify active sites and surface functional groups that may contribute to the absorption of elemental mercury (Hg) by relatively inexpensive calcium (Ca)-based sorbents. The study investigated the formation of chlorine (C1) sites in CA-based sorbents as well as their role and reactivity in the absorption of Hg. HC1-exposed calcium sulfate dihydrate (gypsum) exhibited a superior Hg sorption capability. Crystalline water molecules on the surface of the gypsum were confirmed to contribute indirectly to Hg uptake. These surface molecules may have absorbed HC1 through hydrogen bond formation between an oxygen atom of a crystalline water molecule and a hydrogen atom of an HC1 molecule, Two adjacent, physically absorbed HC1 molecules could then trap an Hg molecule through formation of a mercuric-chloride-like molecule. Significant correlations between C1 and Hg uptake by gypsum were noted. |
| Supplementary Notes |
Presented at EPRI/DOE/EPA Combined Utility Air Pollutant Control Symposium, Atlanta, GA., August 16-20, 1999. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div. |
| Availability Notes |
Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.fedworld.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| NTIS Title Notes |
Rept. for Sep 98-May 99. |
| Category Codes |
68A |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/13 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
930201470 |
| Origin |
NTIS |
| Type |
CAT |
