Biotechnology Letters

, Volume 14, Issue 3, pp 233–238 | Cite as

Phosphate rock bioleaching

  • A. C. A. Costa
  • R. A. Medronho
  • R. P. Pecanha


Microbiological acid solutions produced byThiobacillus ferrooxidans andThiobacillus thiooxidans on pyritiferous concentrate were used to solubilize phosphate rock with a high grade in P2O5. Five different mixtures of pyritiferous concentrate and phosphate rock, in different proportions, were used in adequate liquid culture media. Phosphate solubilization ranged from 12% to 100% when 9K nutrients medium was used and from 12% to 89% when medium contained only 3.0g/l ammonium sulphate.


Phosphate Sulphate Ammonium Organic Chemistry Acid Solution 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Kelly, D.P., Ann. Rev. Microbiol.25, 177 (1971).Google Scholar
  2. 2.
    Brierley, C., Pour la Science,60, 38 (1982)Google Scholar
  3. 3.
    Harrison Jr., A.P., Ann. Rev. Microbiol.,38, 265 (1984)Google Scholar
  4. 4.
    Hutchins, S.R. and Davidson, M.S., Ann. Rev. Microbiol.,40, 311 (1986)Google Scholar
  5. 5.
    Mahapatra, S.S.R. and Mishra, A.K., Current Science,54, 235 (1985)Google Scholar
  6. 6.
    Silverman, M.P. and Lundgren, D.G., J. Bacteriol.,77, 326 (1959)Google Scholar
  7. 7.
    Scott, W.W., Standard Methods of Chemical Analysis, Volume I—The Elements, D. Van Nostrand Company, Inc. New York, 1938.Google Scholar

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • A. C. A. Costa
    • 1
  • R. A. Medronho
    • 2
  • R. P. Pecanha
    • 2
  1. 1.Centro de Tecnologia Mineral-CETEM/CNPqCidade UniversitáriaRio de JaneiroBrasil
  2. 2.Escola de Química. Dept. de Eng. QuímicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrasil

Personalised recommendations