Record Display for the EPA National Library Catalog


Main Title Fluoride emissions from phosphoric acid plant gypsum ponds /
Author King, William Richard, ; King, W. R. ; Ferrell., J. K.
CORP Author North Carolina State Univ., Raleigh.;Environmental Protection Agency, Washington, D.C. Office of Research and Development.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 1974
Report Number PB 241144; EPA-R-800950; EPA-ROAP-21AFA-075; EPA/650/2-74-095
Stock Number PB-241 144
OCLC Number 37612386
Subjects Phosphoric acid industry ; Phosphogypsum
Additional Subjects Air pollution ; Fluorides ; Industrial wastes ; Phosphoric acids ; Ponds ; Lagoons(Ponds) ; Evaporation ; Emission ; Estimates ; Wind velocity ; Manufacturing ; Industrial plants ; Computerized simulation ; Gypsum ; Air water interactions ; Phosphoric acid plants
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD ARCHIVE EPA 650-2-74-095 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD ARCHIVE EPA 650-2-74-095 AWBERC Library/Cincinnati,OH 05/03/2022
ESAD  EPA 650-2-74-095 Region 10 Library/Seattle,WA 10/17/2003
NTIS  PB-241 144 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 316 pages : illustrations, maps, graphs ; 29 cm
The report gives results of a study of fluoride emissions from ponds receiving process water from wet-process phosphoric acid plants. Volatile fluorine compounds accumulate in water used in the manufacture of phosphoric acid by the wet-process method. This process water is routed to ponds for cooling and eventual re-use. While in the ponds, some of the fluorine compounds evaporate, becoming air pollutants. Emission estimates were developed from the pond-to-air mass transfer coefficient and the vapor pressure of fluorine over pond water. These estimates were tested by measurements of ambient-air, fluorine-compound concentrations downwind of the ponds. Comparing the measured ambient air concentrations with concentrations predicted from the emission estimates and a standard atmospheric pollutant dispersion model demonstrated the validity of the emission estimates.
"EPA-650/2-74-095." "PB-241 144." Includes bibliographical references (pages 116-118).