All kinds of microbes, including Aspergillus can contribute actively to geological phenomena, and central to many such geomicrobial processes are transformations of metals and minerals.
Microbes have a variety of properties that can effect changes in metal speciation, toxicity and mobility, as well as mineral formation or mineral dissolution or deterioration. Such mechanisms are important components of natural biogeochemical cycles for metals as well as associated elements in biomass, soil, rocks and minerals, e.g. sulfur and phosphorus, and metalloids, actinides and metal radionuclides.
Apart from being important in natural biosphere processes, metal and mineral transformations can have beneficial or detrimental consequences in a human context. Bioremediation is the application of biological systems to the clean-up of organic and inorganic pollution, with bacteria and fungi being the most important organisms for reclamation, immobilization or detoxification of metallic and radionuclide pollutants.
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|Biohydrometallurgy for Nonsulfidic Minerals: A Review|
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|Mahtab Kamali and Catherine N. Mulligan||RECOVERY OF METALS FROM LOW-GRADE ORES BY ASPERGILLUS NIGER|
|Katja Sterflinger||Fungi as Geologic Agents|
|Anatoly Zyakun, Seth Nii-Annang, Gabriele Franke, Thomas Fischer, Franz Buegger & Oliver Dilly||Microbial Actvity and 13C/12C Ratio as Evidence of N-Hexadecane and N-Hexadecanoic Acid Biodegradation in Agricultural and Forest Soils|
|M. Saidan, M. Valix||BIOLEACHING OF COPPER FROM ELECTRONIC WASTE USING ASPERGILLUS NIGER AND ACIDITHIOBACILLUS|
|Elena Hutchens, Deirdre Gleeson, Frank McDermott, RaÃºl Miranda-CasoLuengo & Nicholas Clipson||Meter-Scale Diversity of Microbial Communities on a Weathered Pegmatite Granite Outcrop in the Wicklow Mountains, Ireland; Evidence for Mineral Induced Selection?|