— This review examines and compare strategies and processes involving microorganisms for critical metals recovery, since conventional physico-chemical …
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 copper and gold: Colorado-based mining ...
— Iron ore is the most widely used metal, which supplies the steel industry aimed at a variety of consumer products based on this ore. On the other hand, the companies that explore these areas should practice high control of these mining areas to avoid contamination in the soil, sediment, and water. ... Finally, the results reported here …
— The complexity of microbial communities and their responses to changing environmental conditions pose challenges in monitoring and managing microbial activities at mining waste sites. Monitoring microbial activity necessitates the use of complex molecular techniques, which can be both expensive and time-consuming.
— The leaching parameters showed that native strains played excellent roles in their corresponding ore bioleaching process, and community structure was greatly …
— The leaching of ionic rare earth elements has caused serious environmental pollution and ecological damage. Microorganisms play a crucial role in soil ecosystems and are one of the most important components of these systems. However, there are fewer studies related to the changes that occur in microbial community structure and diversity …
Here, we discovered an environmental bacterium found in a copper mine that can synthesize single atoms of Cu 0 in a sustainable manner. Its biosynthetic mechanism was proposed using the proteomics approach. This sustainable synthesis of Cu 0 is carried out in microbial growth media, eliminating the use of toxic solvents. The isolation of the ...
— Microbial activity in mine waste can be limited by the availability of these essential nutrients (Craw & Rufaut, 2017; Rashid et al., 2016). Some bacteria and archaea can fix N 2 from the atmosphere, while other microbes require it in other forms such as ammonium, nitrate or organic N. Most microbes require P in the form of soluble inorganic ...
— The Zijinshan Copper Mine in Fujian Province, China (Table 1), illustrates the extreme conditions that can occur in secondary copper sulfide bioleach operations (Ruan et al. 2011).Zijinshan ore contains a high concentration (5.8 %) of pyrite (FeS 2).The main copper sulfide minerals are digenite/chalcocite (0.23 %), covellite (0.2 %), and enargite …
— Microorganisms are useful environmental indicators, able to deliver essential insights to processes regarding mine land rehabilitation. To compare microbial communities from a chronosequence of mine land rehabilitation to pre-disturbance levels from references sites covered by native vegetation, we sampled non-rehabilitated, rehabilitating and …
— The composition of microbial communities of acid mine drainage (AMD) in two wells drilled in the terrace of the Sherlovaya Gora open-cast polymetallic ores mine (Eastern Siberia) was studied. While drainage water filling two wells, ShG14-1 and ShG14-8, had similar values of pH (2.6), Eh (447–494 mV), and temperature (6.5°C), the water …
— In ancient period, mining is the barometer of changing economy through technological development. Especially, ancient Roman civilizations had a high demand for metals such as lead, zinc, copper, tin, mercury, etc. through mining for a high standard of living [1].These miners used the microbial community to leach metals without having …
— As a tech-hungry world gobbles up rare-earth elements, researchers are adapting bacteria that can isolate and purify the metals in the absence of harsh chemicals.
— The ore samples collected from Dexing coper mine (named as DX), Zijin copper mine (ZJ) and Luanshya copper mine (LS) were ground to less than 74 μm in diameter. ... The microbial community structure changed significantly, accompanied by decreased richness and diversity with increased Cu content. Interestingly, ...
Application of microbial technology in the mining industry has shown a progressive ... has been reported that the Lo Aguirre mine in Chile pro-cessed about 16,000 t ore/day between 1980 and 1996 using
Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1. Introduction This chapter is a review of the microbiological leaching of uranium ores. Microbiological ... introduced to the Tharsis mine in Spain 10 years earlier. As a consequence of the ban of
may constitute a considerable share of the microbial community (Tyson et al., 2004). A number of microbial communities of acid mine drainages have already been investigated using molec-ular techniques, including pyrosequencing of the 16S rRNA genes. However, no such studies have been performed for acid drainages of ore deposits in Russia.
Here, we report the environmental extraction and conversion of CuSO 4 ions into single-atom zero-valent copper (Cu 0) by a copper-resistant bacterium isolated from a copper mine in Brazil. Furthermore, the …
— An example for heap bioleaching of polymetallic ore is the Talvivaara mine in Finland, where nickel, zinc, copper ... (1995) Microbial diversity in uranium mine waste heaps. Appl Environ Microbiol 61:2930–2935. CAS Google Scholar Schippers A, Jozsa P-G, Sand W (1996) Sulfur chemistry in bacterial leaching of pyrite. Appl Environ Microbiol …
— Ecological engineering of tailings has been advocated to change tailings' mineralogy, improve physicochemical properties, and accelerate soil formation (i.e. pedogenic processes), allowing the re-colonisation of microbial communities and pioneer plant species (Huang et al. 2012).These early settlers, in turn, act as powerful biological …
— The microbes used in microbial mining are acidophilic, meaning they thrive in acidic environments. They obtain energy by oxidising metal sulfides, such as iron, copper and zinc sulfides, in the ore. This oxidation process releases metal ions into the solution, making it easier to extract and recover the metals.
Biomining is mineral processing with microbes. Biomining is the process of using microorganisms (microbes) to extract metals of economic interest from rock ores or mine waste. Biomining techniques may also be used …
— A microbial community of cold acid mine drainage (6.5°C, pH 2.65) at the Sherlovaya Gora polymetallic open-cast mine (Transbaikal region, Eastern Siberia, Russia) was studied using metagenomic ...
Data Descriptor: A metagenomic survey of soil microbial communities along a rehabilitation chronosequence after iron ore mining Markus Gastauer1, Mabel Patricia Ortiz Vera1,2, Kleber Padovani de ...
— This review examines the acid and ferric sulfate bioleaching of uranium from low grade ores. The review traces back the progression of the technology from the time the role of microorganisms was recognized in the 1950's and 1960's. Some past and present uranium mining operations with active or potential microbial contribution are summarized.
— In this study, the typical steppe around the coal mine and the mining reclamation at Baiyinhua mine #1 in Inner Mongolia Province were selected as the target regions (Fig. 1).The Baiyinhua coal mining area (118°23′25″–118°28′10″E, 44°46′24″–44°49′33″N) in this study area is located in the southeastern West Ujimqin …
— Many microbial-based mining strategies aim to optimise microbial metabolic function to accelerate mineral dissolution for (i) the recovery valuable metals, (ii) the release di-valent magnesium and calcium from silicate minerals into solution or (iii) generating …
Bioleaching (or biomining) is a process in mining and biohydrometallurgy (natural processes of interactions between microbes and minerals) that extracts valuable metals from a low-grade ore with the help of …
— Biomining is an increasingly applied biotechnological procedure for processing of ores in the mining industry (biohydrometallurgy). Nowadays the production of copper from low …
— The most known application for this technology is the bio-oxidation of copper sulphides from primary resources, but opportunities in the mining industry will target too the processing of secondary resources, such as tailings, slag, concentrates and dumps as well as run of mine and crushed low-grade ore material, with an increasingly positioning of …
— Microbial ore leaching (bioleaching) is the process of extracting metals from ores with the use of microorganisms. This method is used to recover many different precious metals like copper, lead, zinc, …
— In this study, an experimental column system is used to emulate the heap leaching process but on a much smaller and controlled scale in order to evaluate the leaching biogeochemistry of a non-sulfidic ore. An indigenous, active microbial community was prepared by concentrating biomass derived from the uranium extraction process …
Revolutionizing Mining with Microbial Power. We're using microbes, earth's oldest miners, to increase recovery rates in copper and lithium while minimizing environmental impact, making mining more sustainable and effective. ... We analyze the genomic makeup of ore and heap leach operations and tailor microbial solutions.
