||SO2 oxidation in plumes : a review and assessment of relevant mechanistic and rate studies /
Levy, A. ;
Drewes, D. R. ;
Hales., J. M.
||Battelle Pacific Northwest Labs., Richland, Wash.;Environmental Protection Agency, Research Triangle Park, N.C. Office of Air Quality Planning and Standards.
|| U.S. Environmental Protection Agency, Office of Air Waste Management, Office of Air Quality Planning and Standards,
Sulfur dioxide--Environmental aspects. ;
Smoke plumes--Analysis. ;
Sulfur dioxide ;
Electric power plants ;
Air pollution ;
Mathematical models ;
Fossil fuels ;
Combustion products ;
Industrial wastes ;
Reaction kinetics ;
Chemical reactions ;
Water phase ;
Atmospheric composition ;
Chemical equilibrium ;
Atmospheric models ;
Atmospheric dispersion models ;
Chemical reaction mechanisms ;
Homogeneous reactions ;
||Research Triangle Park Library/RTP, NC
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||ii p., iii, 96 leaves : ill. ; 28 cm.
The scientific literature pertaining to the oxidation of SO2 in power plant plumes is reviewed. Aqueous phase, homogeneous gas phase, and heterogeneous gas phase mechanisms are considered, as are actual plume studies. The reported rates vary over a wide range, which is not totally unexpected due to the highly complex nature of the oxidation process, and some general conclusions can be drawn: (1) Recent plume studies, in general, indicate lower rates than earlier ones, and also suggest a coincidence between the reappearance of ozone in the plume and oxidation of SO2. (2) Gas phase studies indicate homogeneous reaction of SO2 with OH radicals and heterogeneous reactions catalyzed by lead and iron to be perhaps the most significant processes; (3) In the aqueous phase, the reaction is most effectively catalyzed by iron and manganese, and ammonia plays an important role in promoting the oxidation by maintaining a high pH.
EPA project officer: Joseph A. Tikvart. Prepared by Battelle Pacific Northwest Laboratories. "September 1976." Final report. Includes bibliographical references (leaves 80-88). "EPA-450/3-76-022."