Skip common site navigation and headers
United States Environmental Protection Agency
Exposure Research
Begin Hierarchical Links EPA Home > Research & Development > Exposure Research > Publications/Presentations > End Hierarchical Links

 

Mercury Reactions in the Presence of Chlorine Species: Homogenous Gas Phase and Heterogenous Gas-Solid Phase

spacer
spacer
Abstract:The kinetics of mercury chlorination (with HC1) were studied using a flow reactor system with an on-line Hg analyzer and spciation sampling using a set of impingers. Kinetic parameters, such as reaction order (a), activation energy (Eu) and the overall rate constant (k') were estimated based on the simple overall reaction pathway. The reaction order with respect of Chg,Eu and k' were found to be 1.55, 16.13 [kJ/mol] and 5.07 x 10 -2 exp(-1939.68/T) [ug/m 3)-0.55(s)-1], respectively. The effect of chlorine species (HC1, CH2Cl2) on the in situ Hg capture method previously developed 28 was also investigated. The efficiency of capture of mercury by this in situ method was higher than 98% in the presence of chlorine species. Furthermore under certain conditions, the presence of chlorine enhanced the removal of elemental mercury by additional gas phase oxidation.
spacer
Citation:Lee, T. G., E. J. Hedrick, and P. Biswas. Mercury Reactions in the Presence of Chlorine Species: Homogenous Gas Phase and Heterogenous Gas-Solid Phase. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, 52(11):1316-1323, (2002).
spacer
spacer
Contact: Mary P. O'Bryant - (919)-541-4871 or obriant.mary@epa.gov
spacer
Division: Microbiological & Chemical Exposure Assessment Division
spacer
Branch: Chemical Exposure Research Branch
spacer
Product Type: Journal
spacer
Published: 11/01/2002
spacer
Downloads:
spacer
Bullet Item 12469718   Exit EPA's Web Site
spacer
spacer
spacer

 

ORD Home | Search EPA | Search NERL | Search EIMS | Contacts | Help

 
Begin Site Footer

EPA Home | Privacy and Security Notice | Contact Us

Last Updated on Monday, October 22, 2007
URL: http://cfpub.epa.gov