In biomining, use of bacteria is encouraged to extract metal from rock & abandoned mine (which became a toxic pool). The acid-friendly microbes or the acidophils were discovered in 1960 and the concept of biomining was proposed in the …
Arsenic bioremediation in mining wastewater by controllable genetically modified bacteria with biochar ... further implemented in mining wastewater treatment, leading to increased arsenic removal capacities, which is ready for use under a circumstance up to 20 mg/L of total arsenic pollution. ... Bacterial biomass was …
The bacterial assisted microbial leaching is called "bacterial leaching" and the term "fungal leaching" is applied for microbial leaching supported by fungi. Figure 1 shows some of the most commonly used micro-organisms in …
Microbes are playing increasingly important roles in commercial mining operations, where they are being used in the "bioleaching" of copper, uranium, and gold …
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 …
The use of naturally occurring organisms to augment or enable mining processes, as opposed to using chemicals like cyanide, also offers mining companies the chance to improve their environmental credentials and expedite permitting; something which is becoming ever more difficult.
Global miners are deploying a raft of new leaching technologies that can extract low concentrations of copper from waste rock and help avoid lengthy mine permitting delays.
For example, the resistance mechanism of copper tolerant bacteria screened from a Brazilian copper mine was studied and found that the bacteria reduced free Cu 2+ to non-toxic elemental Cu 0 ...
Mining companies using cyanide are subject to comprehensive regulations and are encouraged to undergo certification through the "International Cyanide Management Code for the Manufacture, Transport and Use of Cyanide in the Production of Gold" to ensure safe operational practices and transparent community relations.
Tools and strategies for mining genomic data and examples of natural products discovered through these methods. (syn-BNP synthetic-bioinformatic natural products, RiPPs ribosomally synthesized and ...
Microorganisms may be used to accelerate mine tailings stabilisation and immobilise heavy metals in mine remediation. Table 1. List of geological, engineering …
Anthropogenic activities, such as mining, influence soil bacterial community composition and microbial distributions. In the current study, the patterns in microbial distribution and the environmental drivers shaping the soil bacterial community composition in the alpine mining area of the Tianshan Mountain region, China, were …
Bacterial mining (biomining) represents the use of microorganisms to leach out metals from ores or mine tailings (wastes), followed by the subsequent …
Producing Copper Nature's Way: Bioleaching Copper Applications in Mining & Extraction. By William H. Dresher, Ph.D., P. E. Summary | Examples | Background | Chemistry of Bioleaching | Microbiology of Bioleaching | Leaching Method | Costs | Research | Conclusions | References. Summary . Bioleaching is the extraction of a …
This study elucidated the effects of compound pollution in rare earth mining watersheds on bacterial communities and the responses of bacterial communities to pollution in terms of community structure, function, and ecological processes. The findings extend the theory of survival strategies of microbial communities to extreme …
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.
Bacterial/Archaeal virus that can insert a viral genome into a cell: ... Here, we use the term 'in situ' mining to generically described metal recovery from both in place (actively fractured ore bodies) and in situ (unfractured ore bodies) mining practises.
In fact, bacteria technologies have been applied on a commercial scale for the recovery of copper and uranium from low-grade ores and industrial wastes. Bacterial activities have been recently introduced in the mineral processing technology. They have been used in mineral surface modification, flocculation, and collectors in flotation.
Mining affects fresh water through heavy use of water in processing ore, and through water pollution from discharged mine effluent and seepage from tailings and waste rock impoundments. Increasingly, human activities such as mining threaten the water sources on which we all depend.
While bioremediation stands out as an inexpensive and efficient approach, the use of bacteria is thought to be a potential and productive organism to prevent this pollution.
Our study exhibits that the conditions in both mining tails facilitated the presence of bacteria with tolerance to acidic environments and elevated concentrations …
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 to clean …
The use of synergistic methods is a promising approach for the treatment of mining waste, offering potential solutions to the complex problems caused by mining pollution. Synergistic techniques will be crucial in fostering a cleaner and more sustainable mining industry, maintaining ecosystems, and safe-guarding public health as research …
A total of 43 bacterial isolates were obtained from water, sediment, and soil samples collected from surrounding gold mining waste disposal. Among these isolates, bacteria resistant to mercury were selected on NA supplemented with various concentrations of mercury.
REEgen's bacterial 'soup' dissolves ground-up rocks, waste electronic components and other solids that contain rare-earth elements — metals that have …
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 to clean up sites that have been polluted with metals. Valuable metals are commonly bound up in solid minerals. Some microbes …
It is known that these indicators are associated with disease causing organisms which are of great concern to public health. This study assessed the relationship between coliform bacteria and water geochemistry in surface and ground water systems in the Tarkwa mining area using logistic regression models.
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 …
In this study, we investigated the impact of plateau uranium mining activities on bacterial communities and functions in soils of different uranium mining environments, including tailings topsoil, mining cave topsoil, open-pit topsoil, and deep soil. The results showed that uranium mining activities had a significant negative effect on the ...
Cyanide Use in Gold Mining Today's hardrock mining industry too often spills cyanide, endangering the environment, wildlife and humans.
Taking advantages of the complementarity of the methods, the genomes of both the abundant and rare species were obtained. Second, most work on mining microbial resources from water focused on bacteria with only a few studies paying attention to aquatic fungi and eukaryotic microorganisms (Ufarte et al., 2015). A similar bias exists in …