Record Display for the EPA National Library Catalog

RECORD NUMBER: 40 OF 124

OLS Field Name OLS Field Data
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
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101LLOA.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 650/2-74-095 Region 3 Library/Philadelphia, PA 02/11/2000
EJBD ARCHIVE EPA 650-2-74-095 Headquarters Library/Washington,DC 07/22/2013
EKAM  650/2-74/095 Region 4 Library/Atlanta,GA 11/20/1998
ESAD  EPA 650-2-74-095 Region 10 Library/Seattle,WA 10/17/2003
NTIS  PB-241 144 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation vi, 316 p. : ill., maps, graphs ; 29 cm.
Abstract
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.
Notes
"EPA-650/2-74-095" "PB-241 144." Includes bibliographical references (p. 116-118).