Adsorption of Microorganisms to Minerals SpringerLink
Abstract. Adsorption of microorganisms (bacteria, fungi and microalgae, etc.) and biomacromolecules (humic substances, extracellular substances, proteins and
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Biomineralization - Wikipedia
Biomineralization, also written biomineralisation, is the process by which living organisms produce minerals, often to harden or stiffen existing tissues. Such tissues are called mineralized tissues. It is an extremely widespread phenomenon; all six taxonomic kingdoms contain members that are able to form minerals, and over 60 different minerals have been identified in organisms. Ex
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Biomining: How microbes help to mine copper - BBC News
"These bacteria need very little to do their work, they use air and mainly oxygen and CO2, and use the mineral itself as a source of energy," she says. She
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Bioflotation: Bacteria-Mineral Interaction for Eco-friendly and ...
Over the course of the experiments, the pH of the solutions gradually decreased to ∼3, indicating the active oxidation of pyrite minerals by bacteria. The
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Biomining - Wikipedia
Bacteria can mine for metals, clean oil spills, purify gold, and use radioactive elements for energy. History of biomining The very first recognized biomining system was published in 1951 when Kenneth
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Microbes could be used to extract metals and minerals
ASU/Peter Rubin. A species of bacteria can successfully pull out rare Earth elements from rocks, even in microgravity environments, a study on the International Space Station has found. The new ...
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Exploitation of Bacterial Activities in Mineral Industry
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
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How do bacteria interact with minerals? - ScienceDirect
All studies that compare the rates of dissolution of a mineral in the presence and the absence of bacteria have been conducted under highly uncontrolled
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Association between the gut microbiota and mineral metabolism
Human studies have provided evidence of the influence of probiotic bacteria on parathormone, calcium and phosphate levels and thus on bone resorption. Recent
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Atomic force microscopy measurements of bacterial adhesion
Soil bacteria live in an environment dominated by particle surfaces and bacterial adhesion and subsequent biofilm formation of liquid-mineral interfaces are ubiquitous processes 1.Bacterial ...
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Mineral formation by bacteria in natural microbial communities
In addition to the minerals described above, organosedimentary structures of microbial origin have also been associated with dolomite , gypsum , and deposits of elemental metals such as Cu and Au . It is interesting that bacteria can form placer gold during laboratory simulations using aqueous solutions of gold chloride . In all cases,
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Bioflotation: Bacteria-Mineral Interaction for Eco-friendly and ...
By adhering to the surface of minerals, the bacteria essentially change the surface characteristics of the minerals as a result of interaction of microbes and mineral surfaces followed by active oxidation/reduction of mineral elements by bacteria.6, 7, 8 The microbial metabolites and activities derived from microbe-mineral interaction bring about
MoreBiomining - Wikipedia
Bacteria can mine for metals, clean oil spills, purify gold, and use radioactive elements for energy. History of biomining The very first recognized biomining system was published in 1951 when Kenneth
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How Bacteria Respire Minerals Science
Several mechanisms have been proposed. First, bacteria may solubilize the minerals by producing chelating molecules. The addition of synthetic chelators has been shown to stimulate microbial electron transfer to iron minerals, but to date, no evidence has been found that bacteria use this mechanism in respiration (6, 7).Second, they may use
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Association between the gut microbiota and mineral metabolism
Human studies have provided evidence of the influence of probiotic bacteria on parathormone, calcium and phosphate levels and thus on bone resorption. Recent studies have produced new information mainly on the impact of the intestinal bacteria on the metabolism of calcium and iron.
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Mechanisms of Bacterial Extracellular Electron Exchange
The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism.
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Insights Into Manganese Solubilizing Bacillus spp. for
Mn-reducing bacteria promote the solubilization of Mn minerals, thus increasing Mn availability in soil. The present study aimed to assess the Mn solubilizing ability and plant growth-promoting potential of Bacillus spp. strains for maize plants with insoluble Mn compounds.
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'Clay hutches': a novel interaction between bacteria and clay minerals
The formation of clay hutches by bacteria would seem to merit further investigation, particularly regarding their roles in bacterial processes in soil and in geological processes, and the interesting possibilities that the 'clay hutches' may represent a 'soil microhabitat', a 'minimal nutritional sphere' and an 'effective survival unit' for
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Mineral-eating intraterrestrial bacteria may give
Mineral-eating intraterrestrial bacteria may give clues on extraterrestrial life. Sanford Underground Research Facility. (Image by Matthew Kapust, courtesy of SURF). A former gold mine in South ...
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Silica Solubilization Potential of Certain Bacterial Species in the ...
Silicate solubilisng bacteria (SSB) are distributed in soil, water, aquatic sediments and in silicate minerals but their population is smaller than the total bacteria indicating their uniqueness. Pond sediment showed a higher SSB with 40×104 g−1 while sugarcane field soil recorded 31×104 g−1 dry weight. SSB population in silicate minerals
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Minerals Free Full-Text Review of Potential Microbial Effects on ...
Microorganisms affect minerals by attaching to the surfaces, oxidizing, or reducing the mineral, and producing EPS and polysaccharides [ 1 ]. In addition, the microbial activity can crucially change the pH (from 9.5 to 3) and Eh (from +400 mV to −200 mV) in a short time [ 9] and affect the chemicals needed in flotation.
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Magnetic bacteria: Microorganisms can help to extract dangerous
Magnetotactic bacteria bind uranium in their cell wall (on the right). This can be used to purify uranium-contaminated water by separating the loaded bacteria with a magnet (on the left).
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Potential Well Water Contaminants and Their Impacts US EPA
Microorganisms include bacteria, ... Heavy metals can leach into drinking water from household plumbing and service lines, mining operations, petroleum refineries, electronics manufacturers, municipal waste disposal, cement plants, and natural mineral deposits. Heavy metals include: arsenic, antimony, cadmium, chromium, copper, lead,
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Atomic force microscopy measurements of bacterial adhesion
Interaction energy between bacteria and minerals. To understand the driving force responsible for bacteria-mineral adhesion, DLVO theory calculations and AFM adhesion force measurements were ...
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Mineral formation by bacteria in natural microbial communities
Due to their small size, bacteria as a group have the highest surface area-to-volume ratio of any group of living organisms and this, together with the presence of charged chemical groups on their cell surface, is responsible for the potent mineral-nucleating ability of these cells.
MoreHow Bacteria Respire Minerals Science
Several mechanisms have been proposed. First, bacteria may solubilize the minerals by producing chelating molecules. The addition of synthetic chelators has been shown to stimulate microbial electron transfer to iron minerals, but to date, no evidence has been found that bacteria use this mechanism in respiration (6, 7).Second, they may use
More
Bioleaching - Wikipedia
Bioleaching is the extraction of metals from their ores through the use of living organisms.This is much cleaner than the traditional heap leaching using cyanide. Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold,
MoreMechanisms of Bacterial Extracellular Electron Exchange
The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism.
MoreSilica Solubilization Potential of Certain Bacterial Species in the ...
Silicate solubilisng bacteria (SSB) are distributed in soil, water, aquatic sediments and in silicate minerals but their population is smaller than the total bacteria indicating their uniqueness. Pond sediment showed a higher SSB with 40×104 g−1 while sugarcane field soil recorded 31×104 g−1 dry weight. SSB population in silicate minerals
More
Mineral-eating intraterrestrial bacteria may give
A former gold mine in South Dakota is giving scientists clues as to how colonies of bacteria living in the continental deep subsurface and feeding out of minerals spread out and form biofilms,...
MoreInsights Into Manganese Solubilizing Bacillus spp. for
Mn-reducing bacteria promote the solubilization of Mn minerals, thus increasing Mn availability in soil. The present study aimed to assess the Mn solubilizing ability and plant growth-promoting potential of Bacillus spp. strains for maize plants with insoluble Mn compounds.
More
Intestinal microbiota as a route for micronutrient bioavailability ...
The gut microbiota affects the mineral metabolism by (i) directly influencing mineral absorption in the gastrointestinal (GI) tract during digestion and by (ii) producing an array of enzymes, which are exclusive for the colonic microbes and that help releasing minerals from foods [37].
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Tooth Remineralization: How to Strengthen Your Teeth - WebMD
You are exposed to mouth bacteria throughout the day. Remineralization helps replace those lost minerals to keep your teeth strong and prevent tooth disease. The minerals work together to form a ...
More'Clay hutches': a novel interaction between bacteria and clay minerals
The formation of clay hutches by bacteria would seem to merit further investigation, particularly regarding their roles in bacterial processes in soil and in geological processes, and the interesting possibilities that the 'clay hutches' may represent a 'soil microhabitat', a 'minimal nutritional sphere' and an 'effective survival unit' for
More
Not So “Green” Technology: The Complicated Legacy of Rare Earth Mining
Harvard researchers have developed a new method for extracting REEs using bacteria rather than toxic chemicals to separate metals from each other. Likewise, researchers at Purdue University found a way to extract REEs from coal ash instead of mining for ores. Of course, these new methods have yet to be perfected.
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A dozen exotic bacteria are found to passively collect rare earth ...
Rare earth elements (REEs) are a group of 17 chemically similar metals, which got their name because they typically occur at low concentrations (between 0.5 and 67 parts per million) within Earth ...
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Mining and Water Quality U.S. Geological Survey - USGS.gov
The rate and degree by which acid-mine drainage proceeds can be increased by the action of certain bacteria. Acidic, metal-laden drainage from abandoned coal mines can have substantial effects on aquatic resources. Problems that can be associated with mine drainage include contaminated drinking water
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