Biorecovery of nanogold and nanogold compounds from gold-containing ores and industrial wastes

In nature, microorganisms developed at various places and adapted to the various weather and geological conditions. Microorganisms participate in geological transformations leading to the dissolution of some minerals and conversion to others. While some microorganisms with their metabolic activity i...

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Bibliographic Details
Published in:Applied microbiology and biotechnology 2021-05, Vol.105 (9), p.3471-3484
Main Author: Maluckov, Biljana S.
Format: Article
Language:English
Subjects:
Amino acids
Biomedical and Life Sciences
Biotechnology
Chemical properties
Dissolution
Geology
Gold
Heavy metals
Identification and classification
Industrial wastes
Leaching
Life Sciences
Materials recovery
Metals
Microbial Genetics and Genomics
Microbiology
Microorganisms
Minerals
Mini-Review
Pretreatment
Weather
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Summary:In nature, microorganisms developed at various places and adapted to the various weather and geological conditions. Microorganisms participate in geological transformations leading to the dissolution of some minerals and conversion to others. While some microorganisms with their metabolic activity increase the mobility of metals, others cause precipitation of metals and the formation of new minerals. These biogeochemical interactions found practical application in the recovery of metals. In the article, the proposals for improvement of existing engineering commercial processes for recovery of metals are given which can enable the formation of nanogold and nanogold compounds. Key points • Amino acids in pretreatment can increase the dissolution of the layer around the gold. • Amino acids in the complexing stage can increase gold leaching . • After the complexing stage, the bionanosynthesis of gold and its compounds is possible . Graphical abstract
ISSN:0175-7598
1432-0614
DOI:10.1007/s00253-021-11277-z