Advertisement

The Washout of Hydrogen Fluoride

  • F. M. Bosch
  • P. M. De Keyzer
Part of the NATO · Challenges of Modern Society book series (NATS, volume 3)

Abstract

The washout of Hydrogen fluoride, emitted by a continuous point source has been considered as being an absorption process.

According to Hales (1972), the fundamental equations describing this process are developed and are discussed more in detail for 2 special cases; namely the irreversible and reversible washout. In both cases the influence on the fluoride concentration in a raindrop of stack height, distance from the source and raindrop radius has been discussed. Moreover, the mean concentration during a real rainshower has been calculated.

From the previous theoretical study a computer program has been developed in order to simulate the fluoride washout around a brickworks in Belgium. This program is able to predict very well the experimental washout values obtained from a precipitation sampling network set up in a radious of 2 km. around these brick works and using a sampling period of 2 weeks.

Keywords

Fluoride Concentration Sherwood Number Atmospheric Stability Hydrogen Fluoride Drop Diameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Best, A. C., 1950: The size distribution of raindrops, Q. J1. R. Met. Soc., 76: 16.CrossRefGoogle Scholar
  2. Bultynck H., Malet L., 1972: Evaluation of atmospheric dilution factors for effluents diffused from an elevated continuous point source, Tellus, 24: 455.ADSCrossRefGoogle Scholar
  3. De Keyzer, P. M., 1980: MS Thesis, State University GhentGoogle Scholar
  4. Froessling N., 1938: The evaporation of falling raindrops, Beitr. Geophys., 52: 170.Google Scholar
  5. Hales J. M., Wolf M. A., Dana M. T., 1973: A linear model for the prediction of the washout of pollutant gases from industrial plumes, AICHE, 19: 292.CrossRefGoogle Scholar
  6. Hales J. M., 1972: Fundamentals of the theory of gas scavenging by rain, Atm. Env., 6: 635CrossRefGoogle Scholar
  7. Lapidus L., Seinfeld J. H., 1971: Numerical solution of ordinary differential equations in: “Mathematics in science and engineering”, 74:174, Academic Press, NY.Google Scholar
  8. Laws J. O., Parson D. A., 1943: The relation of raindrop-size to intensity, Frans. Amer. Geophys. Un., 24. 452.Google Scholar
  9. Mueller H. A., 1976: Ziegelindustrie International nr. 12: 55Google Scholar
  10. Rebuffat P., 1979: Le secteur briquetier, in: “Leefmilieu-Lucht, Eindrapport 1975–1978, nr. 7 - Economische studies”, Prime Minister’s Services, Brussels.Google Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • F. M. Bosch
    • 1
  • P. M. De Keyzer
    • 1
  1. 1.Laboratory for Inorganic Technical ChemistryState University GhentGhentBelgium

Personalised recommendations