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

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Abstract

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.

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The author Biljana S. Maluckov is by herself collected references, devised, and wrote the paper. Her initial idea was the addition of amino acids in existing commercial bioprocesses for the recovery of copper and gold from ores in order to increase their efficiency and improve the environmental properties of processes. Later, it is developed into an even better idea with which one can be biosynthesized nanogold and nanogold compounds and make a specialized BiosNPs plant for bionanosynthesis metals and their compounds.

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Correspondence to Biljana S. Maluckov.

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This article does not contain any study with animals performed by the author.

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The author declares no conflict of interest.

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Maluckov, B.S. Biorecovery of nanogold and nanogold compounds from gold-containing ores and industrial wastes. Appl Microbiol Biotechnol 105, 3471–3484 (2021). https://doi.org/10.1007/s00253-021-11277-z

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  • DOI: https://doi.org/10.1007/s00253-021-11277-z

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