Download PDF by Abhilash, B. D. Pandey, K. A. Natarajan: Microbiology for Minerals, Metals, Materials and the
By Abhilash, B. D. Pandey, K. A. Natarajan
Microbiology for Minerals, Metals, fabrics and the surroundings hyperlinks chemical, metallurgical, and different steel inherent platforms with microbes, and analyzes the interdependence among them. particularly meant to underscore the significance of microbes in environmental remediation within the mining industries, this article deals a simple and conceptual knowing of the position of microbes, and gives an in depth exploration of microbiology and metals. every one bankruptcy is written through specialists from study, and academia. The authors extend ordinarily scale of microbiology functions proper to minerals, steel, fabric, and atmosphere. They elicit the functions of microbes for steel extraction (including mechanisms and techniques) from basic ores/minerals and mining wastes, biomining and comparable ideas of microbial variety and numerous operations, and molecular biology of microbes eager about such structures (extremophiles). additionally they tackle intimately biohydrometallurgy, biomineralisation, bioleaching, biobeneficiation, biosynthesis, and bioremediation and different similar areas.
A source for researchers, graduate scholars, and pros keen on chemical/mining/metallurgical engineering/environmental science/microbiology, Microbiology for Minerals, Metals, fabrics and the surroundings skillfully explains the symbiotic courting among microbiology and minerals-metals-materials, and makes use of specialists from around the globe.
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Additional info for Microbiology for Minerals, Metals, Materials and the Environment
Nanocrystals of lepidocrocite on and away from the cell wall of B. subtilis have been identified. Diverse groups of magnetotactic bacteria (MTB) present in iron ore deposits synthesise intra- and intercellular magnetic minerals such as magnetite and magnetosomes. g. removal of phosphorous, alkalis, silica, clays and alumina). Since phosphorous promotes bacterial growth, iron ore particles having higher phosphorous contents were seen to be colonised by bacterial cells. Microbial mobilisation of phosphorous occurs in iron ore deposits.
Biomineralisation and Microbially Induced Beneficiation 31 Acidophiles such as A. ferrooxidans and A. thiooxidans were observed to alter the surface chemistry of sulphide minerals such as pyrite, chalcopyrite, arsenopyrite, sphalerite and galena. Different adsorption behaviours of Acidithiobacillus cells led to selective flotation depression of pyrite and galena among the above sulphides. 8 Conclusions Biomineralisation and biobeneficiation aspects of clays, bauxites, sulphide and iron ores are critically discussed.
Bacterial interaction conferred increased surface hydrophobicity on quartz, while hematite was rendered more hydrophilic. Interaction with bacterial cells and cell-free metabolites significantly enhanced the flocculation (settling rate) of hematite at neutral pH, while quartz particles were increasingly dispersed. Dispersion of corundum was also facilitated by bacterial interaction, though not to the same extent as observed in quartz. Flotation behavior of various minerals after interaction with B.