diversity of bacterial iron mineralization

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Iron oxidizing bacteria: insights on diversity mechanism of

Iron oxidizing bacteria can oxidize iron at a rate 50 10 3 times faster than the chemical oxidation of iron Sharmin 2001 . Treatment of iron containing drinking water using biological methods is reported by various authors Mouchet 1992 . Most of the iron oxidizing bacterial genera belongs to proteobacteria the largest bacterial phylum.

Iron oxyhydroxide mineralization on microbial extracellular

We focused on iron microbial mat samples from a creek and abandoned mine these samples are dominated by iron oxyhydroxidecoated structures with sheath stalk and filament morphologies. In addition we characterized the mineralized products of an ironoxidizing stalkforming bacterial culture isolated from the mine.

Genetic diversity of bacteria in bioremediation system of

To exploration the change of microorganism in iron tailing sand restoration a bioremediation system of iron tailing sand by combination of Robinia pseudoacacia RyegrassTrifolium repens pus soil or biomatrix flowerpot was designed the change of bacterial quantity and genetic diversity at different time was determined. The tailings and soil samples C1 tailings C2 tailings adjacent to

Diversity of iron and silica precipitation by microbial mats

Direct examination of microbial mats from Icelandic hot springs with transmission electron microscopy and energydispersive Xray spectroscopy revealed a consortium of bacterial cells in varying stages of mineralization. Differences in observed mineralogy largely reflect differences in the chemistry of the hydrothermal waters.

Bacterial communities in mining soils and surrounding areas

This work shows bacterial diversity metabolic repertoire and physiological behavior in five ecosystems samples with different levels of impact. These ecosystems belong to a historical area in Iron Quadrangle Minas Gerais Brazil which suffered mining activities until its total depletion without recovery since today.

Abiotic and biotic regulation on carbon mineralization and

Iron Fe oxides regulate soil organic carbon C content via balancing C processes of stabilization and mineralization. However abiotic and biotic mechanisms are involved in stabilization e.g. by adsorption and/or coprecipitation and decomposition e.g. by shifting the microbial community of paddy soil rich in iron oxides remains poorly understood.

Diversity of bacterial iron mineralization NASA/ADS

Bacterial cells growing naturally in freshwater and marine environments or experimentally in culture can precipitate a variety of authigenic iron minerals. With the vast majority of bacteria biomineralization is a twostep process: initially metals are electrostatically bound to the anionic surfaces of the cell wall and surrounding organic s where they subsequently serve as

Microbial Biomineralization of Iron

Iron is a common ion in biomineral sand it is present for example in magnetite produced by magnetotactic bacteria and in iron sulfides produced by sulfate reducing microorganisms. The work presented in this thesis focused on two types of microorganisms capable of forming iron biominerals. In the first project I have studied the effect of O

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