Comparison of microbial communities in unleached and …
— 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 …
Bacterial communities in mining soils and surrounding areas …
— 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 …
Microbial recovery of critical metals from secondary sources
— This review examines and compare strategies and processes involving microorganisms for critical metals recovery, since conventional physico-chemical …
Biomining: Metal Recovery from Ores with …
— Biomining is an increasingly applied biotechnological procedure for processing of ores in the mining industry (biohydrometallurgy). Nowadays the production of copper from low …
Microbial vanadium (V) reduction in groundwater with different …
— A total of 20 soil samples at the depth of 0–10 cm were collected from four mining camps (vanadium titanomagnetite, stone coal, petroleum associated minerals and uvanite), respectively located in Sichuan, Hunan, Hubei and Guizhou provinces, China, with 5 soil samples for each study area (Fig. S1).After sampling, the five soil samples were …
Biomining: Metal Recovery from Ores with Microorganisms
— 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 …
A metagenomic survey of soil microbial communities along …
— 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 …
Microbiological Mining
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)
Microbial miners take on rare-earth metals
— 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.
A metagenomic survey of soil microbial communities …
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 ...
Effective bioleaching of low-grade copper ores: Insights from …
— The leaching parameters showed that native strains played excellent roles in their corresponding ore bioleaching process, and community structure was greatly …
Microbial Remediation Technologies for Mining Waste …
— 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.
PPT
— Microbial Mining Jennifer Caufield Alex Grippe Amy Weinberger. Outline • Brief History on Mining Industry • Introduction of the role microbes play mining • Methods of Microbial Mining • Copper • Gold • Conclusions. Mining History • Since 4500 B.C. • Conditions for traditional methods: • High grade ore • Inexpensive energy • Limited …
Microbial miners | Feature | Chemistry World
Microbial mystery. Biomining in general is much slower than conventional processing techniques. ... where nickel and zinc are extracted from polymetallic black schist ore by heap bioleaching. The mine began operating in 2009 and in 2013 produced around 9000 tonnes of nickel and 17,000 tonnes of zinc.
16.6A: Microbial Ore Leaching
— 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, …
Uranium extraction from a low-grade, stockpiled, non-sulfidic ore
— 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 …
Bacterial communities in mining soils and surrounding areas …
— Monitoring soil quality is key to improving strategies for the recovery of mining areas. In this study, we based on 16S rRNA gene sequences using high-throughput DNA sequencing and a metabolic analysis to examine the taxonomic and infer functional composition of the bacterial community in an off mining area, which currently is in …
Bioleaching: metal solubilization by microorganisms
— Microbial leaching methods are being increasingly applied for metal recovery from low-grade ores and concentrates that cannot be processed economically by conventional methods. As is the case with many biotechnological processes such methods may have been used since prehistoric times and probably the Greeks and Romans …
The Microbiology of Metal Mine Waste: Bioremediation …
— 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 ...
16.6A: Microbial Ore Leaching
— Key Terms. ore leaching: The process of recovering metals from ores by using a number of different techniques.; Microbial ore leaching (bioleaching) is the process of extracting metals from ores with the use …
Biomining: metal recovery from ores with microorganisms
Biomining is an increasingly applied biotechnological procedure for processing of ores in the mining industry (biohydrometallurgy). Nowadays the production of copper from low-grade ores is the most important industrial application and a significant part of world copper production already originates from heap or dump/stockpile bioleaching.
A metagenomic survey of soil microbial communities along …
— Microorganisms are useful environmental indicators, able to deliver essential insights to processes regarding mine land rehabilitation. To compare microbial communities from a chronosequence of ...
Progress in bioleaching: part B: applications of microbial processes by
— 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 …
Microbial Leaching for Recovery of Nickel and Cobalt from Lateritic Ore
— Nickel reduction from lateritic ore through microbe-mineral interaction is easier due to the production of organic acids and chelating compounds by the microbes. Microbial nickel cobalt recovery process by using DIRB and chemolithotrophic bacteria can provide a developed commercial approach towards low-grade ores extraction of nickel …
Copper mining bacteria: Converting toxic copper …
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 …
Bioleaching (Biomining) Advantages, Process
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 …
Copper mining bacteria: Converting toxic copper ions into a …
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 ...
Biological treatment for the recovery of minerals from low …
— 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 …
Effective bioleaching of low-grade copper ores: Insights from microbial
— 1. Introduction. The copper mine industry is facing with the need to process low-grade ores using low-cost technologies to meet global demand unceasingly (Faramarzi et al., 2020).As an economical and environmental friendly method, bioleaching has been exploited to liberate metals, such as copper, iron and nickel, from low-grade ores in …
Changes in assembly processes and differential responses of …
— 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 …
Mining With Microbes
— 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 ...