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

ISBN-10: 1482257297

ISBN-13: 9781482257298

ISBN-10: 1482257300

ISBN-13: 9781482257304

Microbiology for Minerals, Metals, fabrics and the surroundings hyperlinks chemical, metallurgical, and different steel inherent structures with microbes, and analyzes the interdependence among them. in particular meant to underscore the significance of microbes in environmental remediation within the mining industries, this article deals a simple and conceptual knowing of the function of microbes, and gives an intensive exploration of microbiology and metals. each one bankruptcy is written via specialists from study, and academia. The authors extend commonly scale of microbiology purposes 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 similar innovations of microbial range and diverse operations, and molecular biology of microbes focused on such structures (extremophiles). in addition they tackle intimately biohydrometallurgy, biomineralisation, bioleaching, biobeneficiation, biosynthesis, and bioremediation and different comparable areas.

A source for researchers, graduate scholars, and execs enthusiastic about chemical/mining/metallurgical engineering/environmental science/microbiology, Microbiology for Minerals, Metals, fabrics and the surroundings skillfully explains the symbiotic dating among microbiology and minerals-metals-materials, and makes use of specialists from around the globe.

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Additional resources for Microbiology for Minerals, Metals, Materials and the Environment

Example text

The coexistence of finegrained spherical pyrite and pyrite pseudomorphs after iron oxides suggest that pyrite is the product of bacterial activity and has formed from iron oxides. Bacteria facilitate nucleation and growth of minerals. Bacterial metabolism involving redox reaction with sulphur and metals such as iron and aluminium. Bacterial communities catalyse mineral formation since they derive energy for growth through selective oxidation–reduction of metals and serve as nucleation sites for precipitation of secondary minerals.

Bacillus circulans Paenibacillus polymyxa Bacillus coagulans Pseudomonas spp. Pseudomonas putida Pseudomonas stutzeri Acidithiobacilli Sulphate-reducing bacteria Salient Characteristics Relevant to Biomineralisation Soil fungus, utilising carbohydrate sources from degrading plant waste, secretes organic acids such as citric, oxalic and gluconic acids. Fungus capable of reducing iron and dissolving aluminium. Bacteria secrete exopolysaccharides and organic acids such as acetic and citric acids and can grow anaerobically reducing ferric iron.

Flotation and dispersion of quartz were promoted while hematite and corundum were depressed or flocculated after interaction with bacterial cells and metabolic products. , 2000; Natarajan, 2009). Selective flocculation of 1:1 mixtures of hematite and alumina with silica (quartz) after interaction with cells of P. polymyxa indicated efficient separation of quartz from hematite and alumina. However, efficient separation of alumina (corundum) from hematite required prior adaptation of bacterial cells in the presence of corundum.

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Microbiology for Minerals, Metals, Materials and the Environment by Abhilash, B. D. Pandey, K. A. Natarajan

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