• Cleaning the Environment Through Bioremediation

    Oct 07, 2019· Bioremediation was used extensively to combat the devastating effects of the Exxon Valdez oil spill in 1989 and British Petroleum’s Deepwater Horizon oil spill in 2010. In both oil spills, microorganisms were used to consume petroleum hydrocarbons and played a significant role in reducing the environmental impact.

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  • Biomining of metals: how to access and exploit natural ...

    The use of microorganisms to recover special metals from waste can avoid environmental pollution. Bioleaching microorganisms such as A. ferrooxidans can also have other uses to help avoiding metal contaminations in modern societies. For example, this and other bacteria have been successfully used to recuperate metals such as cadmium from spent ...

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  • Biomining and bacteria Down to Earth

    Now, we have bacteria that are miners. In the past few years, these diminutive diggers have become the darling of the mining industry. For one, their mining methods are not offensive to the environment as are most other techniques, which use explosives, toxic chemicals and …

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  • The Newest Gold Mining Tool: Bacteria Advancing Mining

    The Newest Gold Mining Tool: Bacteria By Chris Calam Geologists employ a variety of geophysical methods to measure variations in the physical properties of rocks ( density, magnetism, electrical conductivity, natural radioactivity, etc.) that may indicate a gold deposit.

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  • mining of gold and uranium by microorganisms

    MICROBIAL MINING. The central role of bacteria in the leaching of copper from lowgrade ore long went unrecognised. The minerals industry now stands to gain from the application of novel methods of microbiological technology . by Corale L. Brierley (Published in: Scientific American, 247, 42 50, 1982, here without accompanying figures)

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  • Biomining: How microbes help to mine copper BBC News

    Mar 21, 2012· But in Chile, bacteria are being used to get at something this country heavily depends on: copper. Chile is the world's biggest copper exporter, and …

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  • Life in blue: Copper resistance mechanisms of bacteria and ...

    Nov 01, 2010· 1. Introduction. The use of acidophilic, chemolithoautotrophic microorganisms capable of oxidizing iron and sulfur in industrial processes is a well established biotechnology which enables the recovery of metals from minerals containing copper, gold and uranium (Olson et al., 2003, Rawlings, 2005, Watling, 2006).Insoluble metal sulfides are oxidized to soluble metal sulfates by the chemical ...

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  • Copper Mining Using Acidothiobacillus microbewiki

    Jul 23, 2011· A study done on the copper solubilizing activity of At. ferrooxidans strains isolated from a lowgrade copper mine in Chile revealed that when grown in a chalcopyritecontaining medium, a particular strain called D32 had a greatly enhanced solubilizing activity in relation to other strains (Fig. 4). The reason for this increased activity is connected to the D32 strain's resistance to sulfite ...

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  • (PDF) Heavy Metal Mining Using Microbes 1

    The use of acidiphilic, chemolithotrophic iron and sulfuroxidizing microbes in processes to recover metals from certain types of copper, uranium, and goldbearing minerals or mineral ...

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  • Researchers Isolate Copper Extracting Bacteria Slashdot

    Bacteria have been used in the copper and iron mining industries for a long time, especially for the sulfide ores. There's a diagram in the 6th edition (1991) of Biology of Microorganisms by Brock and Madigan, p. 650, of the microbial leaching of copper sulfide minerals.

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  • Microbiological Mining Spaceship Earth

    MICROBIAL MINING. The central role of bacteria in the leaching of copper from lowgrade ore long went unrecognised. The minerals industry now stands to gain from the application of novel methods of microbiological technology . by Corale L. Brierley (Published in: Scientific American, 247, 42 50, 1982, here without accompanying figures)

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  • Biomining Environment Friendly Mining

    Biomining is a technique used to recover the various types of minerals from ore using microorganism. It method is cheap, reliable, efficient and also environmentally friendly method of mineral recovery. Using biotechnology efficiency of biomining can be increased by using genetically modified microorganisms.

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