Adhesion abilities and biosorption of Cd and Mg by microorganisms - first step for eco-friendly beneficiation of phosphate ore

Chemical reagents used in traditional mineral processing can be toxic and hazardous for the environment. Therefore, the use of biotechnological methods is becoming increasingly important. Great hopes are being placed in the use of microorganisms for bio-beneficiation of raw materials. However, asses...

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Bibliographic Details
Published in:Scientific reports 2019-09, Vol.9 (1), p.12929-14, Article 12929
Main Authors: Rabia, Hakim, Ould Hamou, Malek, Kasperkiewicz, Katarzyna, Brożek, Jolanta, Augustyniak, Maria
Format: Article
Language:English
Subjects:
14/10
14/28
631/326/171/1818
704/47/4112
Adhesion
Apatite
Bacteria - classification
Bacteria - isolation & purification
Bacteria - metabolism
Bacterial Adhesion
Beneficiation
Biodegradation, Environmental
Biosorption
Biotechnology
Cadmium
Cadmium - metabolism
E coli
Humanities and Social Sciences
Hydrogen-Ion Concentration
Magnesium - metabolism
Metals
Microorganisms
Mineral processing
Minerals
multidisciplinary
pH effects
Phosphates - metabolism
Raw materials
Reagents
Science
Science (multidisciplinary)
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Summary:Chemical reagents used in traditional mineral processing can be toxic and hazardous for the environment. Therefore, the use of biotechnological methods is becoming increasingly important. Great hopes are being placed in the use of microorganisms for bio-beneficiation of raw materials. However, assessment of adhesion abilities of bacteria onto minerals surface as well as biosorption of metals are essential steps before designing final process of each ore beneficiation. The main aim of this work was an investigation of biosorption of Cd and Mg, as well as adhesion abilities of five microorganism species with minerals included in the natural mixture of phosphate ore form Djebel Onk, Algeria. The ore, due to its unique composition, created conditions for adhesion of all five tested microbial strains onto apatite surface during incubation at pH 3. Moreover, Rhodococcus erythropolis CD 130, Pseudomonas fluorescens and Escherichia coli adhered distinctly onto apatite surface during incubation at pH 7. Incubation lasting 20 min at pH 4-6 created the most favorable conditions for biosorption of metals by B. subtilis and adhesion of cells. In case of C. albicans , biosorption of metals as well as adhesion of cells onto the mineral surface were more effective after longer time and in a wider pH range.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-49406-4