قائمة الطعام
The only means of extracting this oil is via microbial enhanced oil recovery (MEOR). This tertiary oil recovery method employs indigenous microorganisms and their metabolic products to enhance oil mobilization. ... Furthermore, they are responsible for changing the pour point of oil and for plugging in the form of inorganic mineral (CaCO 3 ...
Microbial enhanced oil recovery (MEOR) is a promising tertiary oil recovery technology that has received widespread attention from the global oil industry in recent years due to its environmental friendliness, simplicity of operation, and cost-effectiveness. This review presents the: principle, characteristics, classification, recent ...
Aiming at recovery of uranium (U) from low-grade uranium ore with a high fluorine content, column bioleaching of uranium extraction with an indigenous mesophilic consortium was studied. The performance of the bacterial community and the effect of chemical parameters on column bioleaching of uranium were investigated. The results …
The climate crisis and rising demand for critical minerals necessitate the development of novel carbon dioxide removal and ore processing technologies. Microbial processes can be harnessed to recover metals from and store carbon dioxide within mine tailings to transform the mining industry for a greener and more sustainable future.
The recovery of low-grade chalcopyrite ore was enhanced by increasing the microbial cell density.
This book presents the scientific basis for using microbial biomass to remove metals from solution. Reports on current and potential microbial technology, including bioleaching of ores, bio-benefication of ores and fossil fuels, metal recovery from solution, and microbial EOR. Examines how microorganisms used in these technologies might improve ...
Abstract. After traditional oil recovery processes, a large amount of residual oil is still trapped in the pore spaces of the complex capillary network of the reservoir. MEOR (microbial enhanced ...
Bioleaching exhibits high potential for the processing of low-grade complex mineral resources. With the development of the economy and an increase in demand, rare earth elements (REEs) in secondary resources, such as phosphogypsum, red mud and coal-related resources, are gaining more and more attention. In this review, the …
Microbial enhanced oil recovery (MEOR) has been studied in field trials since the 1950s but never experienced a breakthrough as an industrial standard [5, 6]. This is not due to the lack of promising pilot studies [ 7 ] but due to the low oil price throughout the last century (Fig. 2 ) and the availability of inexpensive and easy-to-control CO ...
The optimum growth temperature also increases the attachment of microbial cells with mineral surface through enhanced EPS production. The attachment of A. ferrooxidans to the surface of pyrite minerals increases four times when the temperature is increased from 17 °C to 28 °C [153].
Community with more sulfur oxidizers and high diversity showed high Cu recovery. • Microbial types showed greater influences on mineral dissolution than biodiversity. • A. caldus enhanced CuFeS 2 extraction greatly by regulating physicochemical factors.
Microbially Enhanced Oil Recovery (MEOR) involves a suite of techniques that utilizes microorganisms and their metabolic products to improve the recovery of crude oil from …
Microbial colonization of the mineral surface is affected by the physicochemical properties of the mineral through electrostatic and hydrophobic …
2. MEOR mechanisms. During crude oil recovery, residual oil saturation (Sor) is mainly determined by the capillary number ( NCap ), which is defined as the ratio of viscous force to capillary force, as shown in Eq. (1). (1) N cap = viscous force / capillary force = υ μ / σ cos θ where υ and μ velocity of displacing fluid, σ is the IFT ...
This study discusses microbial-enhanced oil recovery (MEOR) application in Unit Jian-12 in Huabei Oilfield, China. The pilot field was a heavy oil reservoir (50°C, 204 mP.s) with high temperature ...
Acidophilic bacteria and their activity in mineral sulfide oxidation, pp. 3–28 in Microbial mineral recovery. Ehrlich, H.L. and Brierley, C.L (eds.). McGraw-Hill Publishing Company, New York.
and chalcocite. Other metal-bearing minerals were CaO, MgO, and Al2O3. The detailed gradation of mineral sample of the low grade copper sulfide ore was analyzed using a laser particle sizer, which indicated a strong inhomogeneity char-acteristic according to Fig. 1. 2.2. Bacteria Bacteria were obtained from acidic waste water of copper mines ...
To evaluate the effect of temperature changes and microbial populations on sulfide oxidation and gold recovery from an ore in which the gold was locked in sulfide minerals, a series of heated column tests was performed at temperatures ranging from 20 to 60 °C; the columns were inoculated with consortia of mesophilic, moderately …
Microbe-assisted solubilisation of metals from minerals and mineral complexes have been extensively studied for recovery of the metals values of copper, gold, cobalt and uranium (Rawlings 2002; Rawlings et al. 2003; Olson et al. 2003). The microorganisms which are the main tools in biohydrometallurgical operations for metal …
Microbial Leaching for Recovery of Nickel and Cobalt from Lateritic Ore: A Review. February 2021. DOI: 10.1007/978-3-030-65647-8_17. In book: Ni-Co 2021: The 5th International Symposium on Nickel ...
Chemical methods for the extraction and refinement of technologically critical rare earth elements (REEs) are energy-intensive, hazardous, and environmentally destructive. Current biobased extraction systems rely on extremophilic organisms and generate many of the same detrimental effects as chemical methodologies. The mesophilic methylotrophic …
Applied electric fields may be used as an electrochemical method to enhance bacterial activity and are currently applied to the recovery of metals from electronic waste, minerals, and electroplating sludge. Wei et al. (2020) studied the enhanced bioleaching of Cu from Electronic waste (E-waste) using a direct current (DC) …
Abstract This review provides an update to the last mini-review with the same title pertaining to recent developments in bioleaching and biooxidation published in 2013 (Brierley and Brierley). In the intervening almost 10 years, microbial processes for sulfide minerals have seen increased acceptance and ongoing but also declining …
These technical classifications involve: microbial huff and puff recovery (MHPR), microbial flooding recovery (MFR), microbial selective plugging recovery …
Rare earth elements (REEs) are critical raw materials and are attracting interest because of their applications in novel technologies and green economy. Biohydrometallurgy has been used to extract other base metals; however, bioleaching studies of REE mineral extraction from mineral ores and wastes are yet in their infancy. …
The review core is the biotechnology for building and developing new sustainable and safe bio-based processes for the selective microbial extraction of critical metals from various secondary resources and their recovery by specific processes, assisted by microbial biomass, beyond the state-of-the art. 2.
Effects of residues produced by agricultural wastes fermentation (AWF) on low grade copper sulfide ores bioleaching, copper recovery, and microbial community were investigated. The results indicated that adding appropriate bulk of AWF made contributions to low grade copper sulfide ores bioleaching, which may be mainly realized …
Here we find that biomass enrichment (doping) with refined minerals, mineral by-products, or ground rocks reduces carbon loss during pyrolysis, lowering carbon dioxide removal costs by 17% to US ...
The ore or mineral concentrate is fed into the leaching tank as slurry or pulp and are allowed to mix with an aqueous solution, acting as a solvent. Tank leaching is normally operated as a continuous process but it can also be performed as a batch process. ... Alshehri ANZ (2018) Microbial recovery of gold metal from untreated and pretreated ...
Microbial enhanced oil recovery is a promising tertiary oil recovery method. • Main microbial products include biosurfactant and biopolymer. • Modification …
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