Biotechnology Letters

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

Phosphate rock bioleaching

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

Summary

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.

Keywords

Phosphate Sulphate Ammonium Organic Chemistry Acid Solution 

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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

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