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Rudarsko-geološko-naftni zbornik, Vol. 37 No. 5, 2022.

Original scientific paper

https://doi.org/10.17794/rgn.2022.5.5

BIOPROCESSING OF NATURAL PHOSPHATE ORE WITH STAPHYLOCOCCUS AUREUS BACTERIA

Samah S. Abdallah ; Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan 11421, Cairo, Egypt
Khaled A. Selim ; Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan 11421, Cairo, Egypt
Mohamed M. A. Hassan orcid id orcid.org/0000-0003-4138-316X ; Mining and Petroleum Engineering Department, Faculty of Engineering, Al-Azhar University, Qena, Egypt
Atef El-amir ; Giza Engineering Institute GEI, Giza, Egypt
Mohamed G. Farghaly ; Mining and Petroleum Engineering Department, Faculty of Engineering, Al-Azhar University, Qena, Egypt
Samah M. Elsayed ; Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan 11421, Cairo, Egypt

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Abstract

Phosphate ores are in high demand around the world because they are the primary raw materials used in the manufacturing of phosphatic fertilizers and other chemicals. Since the grade of the ore is gradually declining, it is becoming economically viable to mine and beneficiate numerous lower-grade deposits, and a significant number of precious minerals are discarded due to the inadequacy of new technological advances. Thus, biological processes are becoming more appealing in mineral processing due to their lower operating costs and potential applications to beneficiate low-grade complex ores through the interaction of bacteria and mineral surfaces, resulting in surface modification and mineral separation via bio-flotation. Staphylococcus aureus was supplied by the mineral bioprocessing lab, CMRDI. Bacterial adhesion measurements revealed a higher affinity for apatite than quartz. A binary mixture containing 12.5% P2O5 and 42.5% SiO2 yielded a concentrate containing 20.15% P2O5 and 33.5% SiO2. Using the bio-flotation process with Staphylococcus aureus and the optimal conditions on natural phosphate ore, a concentrate with 30.25% P2O5 was obtained from a feed containing 21.89% P2O5.

Keywords

Staphylococcus aureus; phosphate; bio-flotation; adsorption; mineral; apatite; quartz

Hrčak ID:

286704

URI

https://hrcak.srce.hr/286704

Publication date:

7.12.2022.

Article data in other languages: croatian

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