1. Introduction. Arsenic (As) is a highly toxic element among aquatic environments, especially in its inorganic form (Preetha et al., 2023).Arsenic-containing acid mine drainage is generated by the oxidation of abandoned sulfide-enriched arsenopyrite rocks, a most prevalent byproduct of coal mining, typically with a total arsenic concentration over 20 mg·L −1 (Laha et …
This research will provide a new reference for the subsequent use of microorganisms to study heavy metal pollution in mining areas, and supply theoretical guidance for environmental remediation of soil pollution in mining areas. ... The dilution curve of bacteria in the soil of the lead-zinc mining area is given in Fig. S1. The curve tends to ...
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 can oxidize those …
Based on the literature review, different applications or case studies of microorganisms can be retrieved, such as chalcopyrite bioleaching (by using the microorganism A. ferrooxidans), either by a direct or indirect mechanism [19,48], or the bioleaching of pyrite and sphalerite [].In the indirect mechanism, bacteria oxidize soluble Fe 2+ to Fe 3+ and sulfur to …
🦠This paper by Payal Thakur, et al. focuses on the development of a text mining workflow designed to automatically extract biocorrosion-associated genes and proteins in sulfate-reducing ...
Owing to their roles in the arsenic (As) biogeochemical cycle, microorganisms and plants offer significant potential for developing innovative biotechnological applications able to remediate As pollutions. This possible use in bioremediation processes and phytomanagement is based on their ability to catalyse various biotransformation reactions leading to, e.g. the …
These natural capacities can be exploited for the bioremediation of mine impacted sites. Microorganisms also play a key role in phytostabilisation, either indirectly by promoting …
Traditional methods of biobutanol and bioethanol production involve the use of a chemical process supplemented with the use of mesophilic microorganisms such as Saccharomyces cerevisiae and Clostridium species 27. ... In addition to biofuels, another important application of extremophiles and their enzymes can be found in the mining sector 40.
The use of plant growth-promoting microorganisms is among the most promising approaches; however, molecular mechanisms underneath plant–microbe interactions are still poorly understood. In this review, we summarized the knowledge on plant–microbe interactions, highlighting the role of microbial and plant proteins and metabolites in the ...
Cyanide's efficiency makes mining more wasteful. Because cyanide leaching is very efficient, it allows profitable mining of much lower ore grades. Mining lower grade ore requires the extraction and processing of much more ore to get the same amount of gold. Partially due to cyanide, modern mines are. much larger than before cyanide was used;
Fine ore is kept in a large, slope-shaped dump. During slope leaching, a water solution made of inoculum is continuously sprayed over the ore. After that, the leach liquor (or remaining liquid) is gathered at the bottom and processed for supplemental metal recovery.
These bacteria utilize oxidoreductive enzymes for dye degradation. Aerobic bacteria use oxygen-catalyzed azoreductase to break the azo bonds . Some bacterial strains degrade dyes in aerobic conditions and use mono and dioxygenase for oxidizing the aromatic ring of organic compounds . Anaerobic bacteria use the enzyme azoreductase to degrade azo ...
Literature on the use of microbial inoculants to increase crop yields, to control soil-borne plant diseases, or to degrade pollutants has been reviewed. Established inoculant technology based on Rhizobium/peat inoculants has been summarized. Special emphasis has been placed on the use of carrier materials for the delivery of microbial inoculants. Some new developments, e.g., the …
This chapter provides a detailed overview of microbial remediation technologies specifically tailored to mining and industrial waste. It explores the diversity of microorganisms capable …
Rapid depletion of the world's mineral deposits combined with the expanding demand for metals places great pressure on our ability to provide technologically and economically feasible processes to recover greater amounts of metals from progressively lower grade sources. Chemical mining is one area in which expanding research and development can provide new …
Introduction. Arsenic (As), which is often considered a non-essential element except for some organisms (but would be in fact an ultratrace element) and classified as a carcinogen, is a common contaminant of water, soil and food, and a global danger to human health (Nordstrom 2002; Zhao et al. 2010; ATSDR 2017; Marchant et al. 2017; da Silva et al. 2018a).
Land use change is among the global challenges that pose a serious threat to biodiversity loss (Winkler et al., 2021).Changes in land use are the manifestations of how human inference affects the Earth's natural system and contributes significantly to global environmental change (Lawler et al., 2014).For example, in China, the most common land use change …
In biomining, use of bacteria is encouraged to extract metal from rock & abandoned mine (which became a toxic pool). ... this condition is conductive for some microorganisms for their growth. Microorganisms play dual role in mining & allied industries. Their presence is undesirable during mining operation and are used as remedial measure ...
Generally speaking, biotechnology involves the use of processes that are facilitated by cells or their components to achieve a specific end-goal. For the mining sector, biotechnologies have been proposed or established for a …
Restoration of ecosystem functions is one of the primary objectives of mine restoration. Microorganisms can help with the restoration of ecosystem functions and play an important role in mine restoration (Jiao et al., 2022).Microbial communities have been shown to promote plant community restoration by affecting ecosystem functions such as element cycling …
BHP and JSW Steel have teamed up to explore and accelerate the adoption of a modular technology developed by UK-based Carbon Clean to decarbonize the steelmaking process, with a particular focus ...
The risks of RE pollution due to mining, transportation and processing as well as from the improper disposal of materials containing these compounds could potentially lead to elevated levels within the environment, that may have very serious environmental and occupational risks. ... The use of bacteria capable of mobilizing TE and/or ...
It was generally believed that coal sources are not favorable as live-in habitats for microorganisms due to their recalcitrant chemical nature and negligible decomposition. However, accumulating evidence has revealed the presence of diverse microbial groups in coal environments and their significant metabolic role in coal biogeochemical dynamics and …
Mining-impacted sites do have toxicological consequences for such microbe-mediated environmental operations. Considering the global effect of mining wastes and the importance of planned reclamation of these sites, it is significant to understand the community structure and function of microbes relevant to nitrogen biogeochemistry.
The mining and metallurgical industry represents one of the leading causes of environmental pollution. In this context, the optimization of mineral waste management and the efficient extraction of…
Microorganisms that mainly consist of autotrophic and heterotrophic archaea and bacteria, take part in catalyzing iron and sulfur oxidation which determines the release of metals and sulfur into ...
The present review was based on publications that attend at least one of the following criteria: (1) use of microorganism with capacity to induce CaCO 3 precipitation; (2) analysis of the capacity to precipitate calcite; (3) use of different strategies for the application of microorganisms to concrete or mortar – encapsulated, impregnated in ...
The mining industry's understanding of the practical considerations of deploying microbial sulfide oxidation flowsheets had become generalized (The Chemistry of Gold …
Microorganisms can mediate gold solubilisation by oxidising the sulphide matrix of refractory gold ores making the gold more accessible to leaching by chemical lixiviants. ... Current management of mining waste is based on linear economy thinking. However, the use of mining waste as a raw material resource can be one solution to the limited ...
This process, called bioleaching, involves the use of bacteria and archaea that can dissolve and extract metals from low-grade ore. The microorganisms used in bioleaching can tolerate high levels of heavy metals and acidity, making them well-suited for use in mining operations.