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11. MICROBIAL ENHANCED OIL RECOVERY (MEOR) PART OF CHEMICAL INJECTION- (WITH THE HELP OF MICRO-ORGANISMS) MEOR is a process in which MICRO-ORGANISM are used to produce surfactants, acids, and/or gases using growth substrates from the fossil fuel, to enhance the oil recovery BIOSURFACTANT – which …Web
Microorganisms enter the flotation process mainly from intake water and ore material. The diversity and number of microorganisms can vary significantly from mine to mine. In flotation, the conditions including oxygen levels, temperature, and nutrients from ore, intake water, and reagents are often favorable for the microbial growth. The mining …Web
1. Industrial production of chemical solvents "Acetone" LincolnUniversityCollege Faculty of science Department of Biotechnology Presented by Essam Yahya. 2. Solvents Solvent is a substance that dissolves a solute (a chemically distinct liquid, solid or gas), resulting in a solution. A substance, usually a liquid, in which …Web
Petroleum microbiology. Petroleum Microbiology is a state-of-the-art presentation of the specific microbes that inhabit oil reservoirs, with an emphasis on the ecological significance of anaerobic microorganisms. An intriguing introduction to extremophilic microbes, the book considers the various beneficial and detrimental …Web
6. Studies of Plugging by Dead Bacteria Rate of plugging depends on bacterial cell suspension density. Plugging efficiency decreases from filamentous rod-shaped cells (1µm × 5 µm) to small spherical cell …Web
Mining has advanced primarily through the use of two strategies: pyrometallurgy and hydrometallurgy. Both have been used successfully to extract valuable metals from ore deposits. These strategies, without a doubt, harm the environment. Furthermore, due to decades of excessive mining, there has been a global decline in …Web
Microorganisms enter the flotation process mainly from intake water and ore material. The diversity and number of microorganisms can vary significantly from mine to mine. In flotation, the conditions including oxygen levels, temperature, and nutrients from ore, intake water, and reagents are often favorable for the microbial growth. The mining …Web
The modern boron applications have adsorbed the mineral processors' attention to improve typical boron mineral's (BM) beneficiation methods. In this regard, dry treatment and pretreatment processes—such as magnetic separation and calcination as environmentally friendly methods, due to their minimal or zero adverse effect on the …Web
Microbial enhanced oil recovery (MEOR) is an alternative oil recovery approach which is claimed in the literature to be very promising in recovering up to 50% …Web
Role of indigenous microbes in the formation and conversion of bauxite minerals is illustrated. Many types of microorganisms such as fungi, heterotrophic and autotrophic bacteria and yeasts inhabit bauxite ore deposits bringing about biogenesis and biomineraliztion. Organisms capable of iron oxidation and reduction and solubilising …Web
Bio-beneficiation is described as the selective removal of undesired minerals from an ore by using microorganisms, resulting in the enrichment of the desired mineral constituent of the ore. Processes involved in microbial mineral beneficiation are selective leaching, flotation and flocculation . Microbe-mineral interactions have shown …Web
The process is continuous and it is done on a large scale—103 to 10 5 tonnes of ore feed per day. Beneficiation is begun with crushing and wet-grinding the ore to typically 10–100μm. This ensures that the copper mineral grains are for the most part liberated from the worthless minerals.Web
In bioleaching, microorganisms convert solid metal values into their water-soluble state, whereas, in bio-oxidation minerals get oxidized by microbial activity while the metal values still remain in the solid phase in a more concentrated form.10 Bio-oxidation is generally used as a preconditioning process.Web
USE OF MICROBES IN MINERAL BENEFICIATION AND OIL RECOVERY. presented byEssam Yahya. Page 2. 2. Currently global energy production from fossil fuels is about 80-90% with oil and gas representing about 60 %. During oil production, primary oil recovery can account for between 30-40 % oil productions.Web
Microbial enhanced oil recovery (MEOR) is one of the tertiary oil recovery approaches which uses ex-situ/in-situ microorganisms and their metabolites like biopolymers, biosurfactants, bio-enzymes, biogases, solvents, and biogenic acids to modify the flow characteristics of residual oil in the reservoirs to enhance oil recovery ( Niu et al ...Web
Preconcentration of valuable minerals through physical beneficiation strategies such as magnetic, gravity, electrostatic, desliming, and froth flotation promotes enhanced value recovery whilst decreasing reagents and energy consumption during downstream extraction processes. These preconcentration strategies are in continuous …Web
Abstract. Adsorption of microorganisms (bacteria, fungi and microalgae, etc.) and biomacromolecules (humic substances, extracellular substances, proteins and nuclear acids, etc.) to minerals are universal in the nature environments. These processes also governed the inorganic and organic pollutants migration and conversion.Web
The actions of bacteria on mineral oil were identified in. the 1920s (Beckman, 1926) with laboratory tests of microbial ... oil and gas industries have used microbes for decades in. applications ...Web
Microorganisms and microbial by-products (e.g., biosurfactants) can, respectively, attach or adsorb to mineral surfaces, potentially altering the wettability of the rock. With respect to the microorganisms, in the oil reservoir they will grow solely at the oil-water interface – all life needs water, minimally, for growth.Web
1. USE OF MICROBES IN MINERAL BENEFICIATION AND OIL RECOVERY presented by Essam Yahya. 2. Currently global energy production from fossil fuels is about 80-90% with oil and gas representing about 60 % During oil production, primary oil recovery can account for between 30-40 % oil productions While additional 15 …Web
Through biomining process microorganisms are applied to recover precious minerals and metals of commercial significance from mining and industrial waste residues. This technology is also applied for …Web
Dwyer et al. Microorganisms relevant for mineral beneficiation Mineral Processing and Extractive Metallurgy (Trans. Inst. Min. Metall. C) 2012 VOL 121 NO 2 69 However, the application of this ...Web
2.3. Bioleaching studies. Modified K medium having a composition of (g/l): MnSO 4 0.3, yeast extract 0.7 and peptone 2.2 was used as the bleaching medium. 2% (w/v) low-grade Mn ore sample and 2% (w/v) dextrose were further supplemented into the medium. The experiments were carried out in duplicates and at an initial pH of 6.5 and temperature 30 …Web
The acid-friendly microbes or the acidophils were discovered in 1960 and the concept of biomining was proposed in the 1950s and 1960s. Moving closer to the …Web
These results would be very helpful and give significant insights into the enhancement of bioflotation of sulfide minerals. In this aspect the bacteria used in this study might be applicable for the flotation bioreagents for creating environmentally friendly mineral processing. 2. Materials and Methods 2.1.Web
The beneficial roles of microbes in the field of mineral processing starting from mining, beneficiation and metal extraction to efficient waste disposal have now …Web
Three roles of minerals in supporting the colonizing microbial community: (1) minerals can offer protection to microbes, including (a) physical and (b) chemical …Web
ABSTRACT Mineral biotechnological applications, e.g., bioleaching and bio-beneficiation, for waste treatment and resource recovery have invited due attention owing to their economic and eco-friendly benefits in comparison to the conventional methods. Although research has progressed well, there are several aspects that are still not well …Web
So generally used microorganisms which are engaged in metal solubilisation are mostly thermophilic and acidophilic in nature. ... Interaction of Bacillus polymyxa with some oxide minerals with reference to mineral beneficiation and environmental control. Miner Eng 10:1339–1354. CrossRef CAS Google Scholar …Web
The acid-friendly microbes or the acidophils were discovered in 1960 and the concept of biomining was proposed in the 1950s and 1960s. Moving closer to the environment and minimize the potential risks of mining, Microorganisms play a significant role in curbing these harmful effects. Microorganisms play a dual role.Web
In this paper, biotechnological aspects of environmentally benign iron ore beneficiation are illustrated with respect to biomineralisation, mining microorganisms, surface chemical aspects of microbe-mineral interactions and role of mineral-specific bioreagents. Hematite is the most abundant iron bearing mineral widely used in iron and …Web
External to the clay mineral structure, Fe may be present as an oxide on the surface of the particle (such as in kaolinite) (Carroll, 1958). The composition of smectite is (Al 1.67 Mg 0.33)Si 4 O 10 (OH) 2 M + 0.33; where M + represents exchangeable cation, whereas kaolin is Al 2 Si 2 O 5 (OH) 4 (Uddin, 2018). Tetrahedral sheets are formed by ...Web
microorganisms, thus enriching it with respect to the desired valuable minerals. As against the conventional techniques, microbially induced flotation and flocculationWeb
2. INTRODUCTION • Microbial Enhanced Oil Recovery (MEOR) is a technology which can recover more oil at low cost. • This positive statement should excite the oil industry and the nation since the American Petroleum Institute reports that the U. S. production declined by half a million barrels a day in 1989, twice the decline experienced …Web
Effluents and Their Application in Mineral Beneficiation, Geomicrobiology Journal, DOI: 10.1080/01490451.2016.1141340 ... acidophilic microorganisms to mineral processing is devel-Web
Abstract. Various mechanisms involved in bioleaching of sulfide minerals are illustrated with special focus on A. ferrooxidans, the most widely implicated and used bacteria.Through appropriate definitions and critical analyses of scientific research spread over 50 years, electrochemical and microbiological aspects of proposed mechanisms are analyzed in …Web
Explains the imperative importance of bacteria in minerals and metals sector; ... His research areas include chemical beneficiation, hydro- and bio-hydro-metallurgy and bio-remediation, sulphation roasting and waste processing, recycling, and environmental management. He has published over 200 papers in journals and conference …Web
The depletion of oil resources, increasing global energy demand, the current low, yet unpredictable, price of oil, and increasing maturity of major oil fields has driven the need for the development of oil recovery technologies that are less costly and, where possible, environmentally compatible. Using current technologies, between 20 and 40% of the …Web
This paper provides a comprehensive review of current research on the use of microorganisms for mineral beneficiation and …Web
thermophilic bacteria holds the key for the successful and efficient bioleaching of chalcopyrite, sphalerite and pentlandite concentrates. Microorganisms find use in environmental control and mineral beneficiation as well. Microbially-induced mineral flotation and flocculation have been proved to very cost-effective and environment-friendly.Web
