The use of microbes to degrade such type of minerals is gaining acceptance. This study was carried out, therefore to isolate, identify and characterize iron solubilizing bacteria from Iron stones of Agbaja iron ore mining site of Kogi State. Crushed samples in the range of 0.25µm and 0.75µm particle size were used for the isolation.

Sulfate-reducing bacteria can be used to remediate acid mine tailings making use of the oxygen and enriched carbon source produced by algae (Hilson and Murck, 2001; Hallberg, 2010). They use sulfate as a terminal electron acceptor with SO 4 2-being converted into H 2 S. The isolation of acid tolerant SRB, which catalyze the reduction of sulfate ...

Now researchers suggest bacteria could be enlisted for "bio-mining" in space, to extract oxygen, nutrients and minerals from extraterrestrial bodies such as the moon and Mars for use by future ...

This indigenous bacteria will be able to be used to release gold from rock which contains sulfide minerals and reduce the use of hazardous chemicals commonly used in gold mining. How to Cite Fitriyani, N., Irianto, A., & Pramono, H. (2018).

use of bacteria in south african gold mining Bacteria Found Nearly 2 Miles Underground | LiveScience The researchers found the bacteria when they learned of a water-filled fracture [image] in a South African gold mine close to Johannesburg.

MICROBIAL MINING. The central role of bacteria in the leaching of copper from low-grade 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)

Harnessing microbes to do mining work is called biomining, or sometimes bioextraction or bioleaching. The strategy has been most extensively studied for …

which permits unrestricted use, distribution, and build upon your work non-commercially. Isolation, identification and characterization of some bacteria from soil samples of agbaja iron ore mining site of kogi state Volume 4 Issue 3 - 2017 Ekpa Emmanuel, Adaji Andrew, Odiba C John, Iyere, Emmanuel, Ohi Priesley, Dorcas Ufeli, Abubakar Amina

RESEARCH: Harnessing bacteria to turn gold grains into nuggets. A bacteria that re-concentrates gold grains into nuggets is being targeted by researchers for its potential to optimize gold extraction processes from […] The use of bacteria to collect gold has applications in primary recovery, reprocessing old tailings, and recycling ...

In Chile, a scientist is testing "metal-eating" bacteria she hopes could help clean up the country's highly-polluting mining industry. In her laboratory in Antofagasta, an industrial town 1,100 ...

1. Introduction 1.1 Microorganism A microorganism (Fig-01) (from the Greek mikros, "small" and organismós, "organism") is a microscopic organism, which may be a single cell or multicellular organism. In other words, an organism of microscopic or submicroscopic size, especially a bacterium or protozoan. The study of microorganisms is called ...

Traditional small-scale gold mining mostly use mercury to extract the gold from ores. However, mercury contamination in the environment can affect the composition and structure of the bacterial community. The purpose of this study was to determine the effect of mercury contamination on the bacterial …

In the case of biomining, the bacteria are naturally occurring at mining sites anyway, and are not pathogenic. Biomining is already in use in several countries, including South Africa, Brazil and ...

Bacterial colonies perform a cooperative and distributed exploration of the environmental resources by using their quorum-sensing mechanisms. This paper describes how bacterial colony networks and their skills to explore resources can be used as

Use of native plants and their associated bacteria rhizobiomes to remediate-restore Draa Sfar and Kettara mining sites, Morocco April 2021 Environmental Monitoring and Assessment 193(4)

commercially for use in pesticides, wood preservatives, and metal alloys. Arsenic can be toxic in large doses, and the mining industry monitors and prevents its release into the environment. [32] Background . Arsenic is the 20th most abundant component of the Earth's crust, and is …

Soil and mine tailings are unreceptive to plant growth representing an imminent threat to the environment and resource sustainability. Using indigenous plants and their associated rhizobacteria to restore mining sites would be an eco-friendly solution to mitigate soil-metal toxicity. Soil prospection from Draa Sfar and Kettara mining sites in Morocco was carried out during different seasons ...

To test this, soil properties and bacterial communities in a reclaimed coal mining subsidence area were investigated under different fertilizer regimes and different reclamation times. Compared with no fertilization treatment, fertilization rapidly improved the soil nutrients and bacterial α-diversity, both of which exhibited no significant ...

A young Chilean scientist hopes to use "metal-eating bacteria" to make mining less polluting. His startup Rudanac Biotec is now seeking funding for large-scale trials. In his laboratory in an industrial area in Antofagasta, in northern Chile, Nadac Reales, a 33-year-old biologist, has been carrying out research on extremophiles, organisms that live in extreme conditions…

Bacterial strains of soils from mining region were resistant to 3000 mg L −1 of As. • Reduced 71.88% of arsenite and 85.72% of arsenate from the culture medium. • Potential application of theses strains in bioremediation processes.

Copper-eating bacteria. Mining companies normally either dispose tailings as waste or use them as substitutes for other chemical processes although some mineral content, uneconomical to recover, is still left in the tailings. However, increasingly rare minerals such as copper are highly valued and mineral recovery from tailings could become ...

Mining for novel bacterial defence systems. Bacteria encode many strategies to prevent or escape infection. Through the analysis of metagenomic dark …

bacteria - bacteria - Bacteria in industry: Anaerobic sugar fermentation reactions by various bacteria produce different end products. The production of ethanol by yeasts has been exploited by the brewing industry for thousands of years and is used for fuel production. Specific bacteria carry out the oxidation of alcohol to acetic acid in the production of vinegar.

Genome mining will definitely expand to more bacterial species and BGCs, providing new bioactive compounds via a combination of different methods, including those inspired by synthetic biology. Once discovered, the new compounds will have to be produced at a scale allowing biological testing for pharmacological properties.

In the online edition of Science on December 2, 2010, the scientists reported the isolation of a bacterium that can live using arsenate. The new strain, identified as GFAJ-1, is a member of the Halomonadaceae family of Gammaproteobacteria. GFAJ-1 grew faster when the researchers added phosphate to the media, but the bacteria could also grow ...

Fungi and bacteria are associated with different life-strategies, which is thought to contribute to their distinct roles in the decomposition of OM. Bacteria are generally thought to be copiotrophs that use nutrient-rich resources with a fast but inefficient growth strategy (r-strategists), whereas fungi are oligotrophs that use complex and low ...

Bacteria are now increasingly being used to facilitate the extraction of metals from low grades ores and concentrates (bio mining) that cannot be economically processed by conventional methods. These bacteria help in enrichment of metals in water from gold ores and mines, in a solubilization process called bioleaching.

In Chile, a scientist is testing "metal-eating" bacteria she hopes could help clean up the country's highly-polluting mining industry. In her laboratory in Antofagasta, an industrial town 1,100 ...

Cyanide Use in Gold Mining. What is cyanide? Cyanide is a rapidly acting, potentially deadly chemical. "Cyanide" can mean any one of various compounds containing the chemical group CN: one atom of carbon (C) and one atom of nitrogen (N). Because it is organic, it reacts readily with living organisms.

The 33-year-old researcher hopes that the organism, an iron-oxidizing bacteria called Leptospirillum, could be used to clean up mining waste, a major source of pollution in Chile.

Mining Halophytes for Plant Growth-Promoting Halotolerant Bacteria to Enhance the Salinity Tolerance of Non-halophytic Crops Front Microbiol. 2018 Feb 8;9:148. doi: 10.3389/fmicb.2018.00148. eCollection 2018. Authors Hassan Etesami 1 ...

Bacteria produce gold by digesting toxic metals. C. metallidurans can produce small gold nuggets. Credit: American Society for Microbiology. High …

Use of a promiscuous, constitutively-active bacterial enhancer-binding protein to define the σ⁵⁴ (RpoN) regulon of Salmonella Typhimurium LT2 BMC Genomics …

Since the identification and characterization of iron and sulfur oxidizing bacteria in the 1940s, a rapid progress is being made in minerals engineering based on biological activities. Microorganisms can play a beneficial role in all facets of minerals processing, from mining to waste disposal and management. Some of the applications, such as biologically assisted leaching of copper sulfide ...