A proof-of-concept of copper sulfide mineral bioleaching assisted by microbial fuel cells (MFCs) was demonstrated in current study. Simultaneous copper extraction and electricity generation were obtained in this bioleaching process, providing a novel approach for copper sulfide mineral bioleaching. Compared with bioleaching of a …

Bioleaching involves dumping low-grade ore into a heap and soaking it with acid and bacteria, which degrade the ore and release minerals into fluid. This technique is commonly used to extract gold, copper, nickel, zinc, uranium, and silver. ... biopulping, biofuels from microbes, and microbial enhanced oil recovery (MEOR). It provides …

As a dynamic screening tool for a high-salinity oilfield (186 g/L), anaerobic sandpacks were established to simulate Microbial Enhanced Oil Recovery (MEOR) under defined laboratory conditions. Glass beads, quartz sand or crushed reservoir rock were used to produce porous media which varied in permeability, wettability, homogeneity …

Three roles of minerals in supporting the colonizing microbial community: (1) minerals can offer protection to microbes, including (a) physical and (b) chemical protection; (2) minerals provide nutrients to support microbial growth and metabolism including (c) bio-essential elements and (d) trace metals; (3) minerals provide energy to …

Therefore, we investigated the short- and long-term effects of a nitrate-based anti-souring concept for a microbial enhanced oil recovery trial in Northern Germany. With batch, dynamic and numerical modeling experiments we aimed to understand the nitrate-induced changes on the microbial community and also on mineral precipitations in iron …

Abstract Microbial enhanced oil recovery (MEOR) represents the use of microorganisms to extract the remaining oil from reservoirs. This technique has the potential to be cost-efficient in the extraction of oil remained trapped in capillary pores of the formation rock or in areas not swept by the classical or modern enhanced oil recovery …

To accelerate microbial leaching and improve the efficiency of valuable metal recovery, various means such as domestication of microorganisms, roasting of minerals and addition of fortification agents have been developed and applied to the microbial leaching process with a view to improving the leaching effect of vanadium.

The present study describes the ex-situ production of a biosurfactant by Pseudomonas sp. TMB2 for its potential application in enhancing oil recovery. The physicochemical parameters such as temperature and pH were optimized as 30 °C and 7.2, respectively, for their maximum laboratory scale production in mineral salt medium containing glucose …

Optimization of microbial growth condition is an important step for the maximum extraction of metal from mineral ore using the biological system. Fig. 22.2 illustrates the factors and various process parameters influencing the bioleaching process of mineral ore. Chemolithotrophic bacteria are commonly used for the metal …

The increasing demand for rare earth elements (REEs), especially from new and innovative technology, has strained their supply, which makes the exploration of new REE sources necessary, for example, the recovery of REEs from phsophogypsum (PG). PG is a byproduct during the wet production of phosphoric acid, which is an attractive …

Because the conventional methods of oil recovery have exhaustively reached an economic limit, developing novel technological approaches in oil extraction is therefore a priority concern. One proposed strategy is the microbial enhanced oil recovery (MEOR), which is purported as an effective method to improve oil recovery from low-permeability ...

However, side effects of nitrate injection are sometimes observed but not well understood. In our study, we used original water from an onshore reservoir, where a microbial enhanced oil recovery (MEOR) application is planned, and investigated the effects of nitrate addition on H2S generation, mineral precipitation and microbiology.

Although microbial products and activities are discussed independently, it is likely that microbial processes act synergistically to effect oil recovery. Microbially enhanced oil recovery (MEOR) processes can be grouped into four main categories, depending on the type of production problem and whether the process is localized to the …

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 ...

The main chemical components of the raw uranium ore samples are presented in Table 2.As shown in Table 2, the proportions of Fe 2 O 3 and FeO in uranium ore were 3.48% and 1.57%, respectively, indicating that the content of Fe in the ore was relatively high and mostly existed in the form of Fe 3+, accounting for 57% of the total iron.The …

Previous researches [11] had explained potential role of bacteria as agent for enhancing oil recovery for example, by stimulating microbial gas production or selective plugging by biofilm ...

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Structural Modi・…ation of Chalcopyrite Ore for Enhanced Copper Recovery 2007. there was a rise in cell concentration from 3.76 to 4.45 ﾂｩ 106cells/ml in the former whereas in the latter it was found to be 3.76 to 4.44 ﾂｩ 106cells/ml. But after 20 days there was a decrease in the bacterial growth from the 25th to the 35th day.

microbes in mineral beneficiation and oil recovery. Microbial Enhanced Heavy Oil Recovery by the Aid of Inhabitant . Jan 16, 2014 . Microbial enhanced oil recovery (MEOR) ... mineral zinc ore production;

The recovery of low-grade chalcopyrite ore was enhanced by increasing the microbial cell density. The addition of 1.5 × 10 8 cells/mL to the 0.45 m column and 5.0 × 10 7 cells/mL to the 1 m column resulted in a higher extraction. As a result, the copper dissolution increased from 32% to 44% in the 0.45 m column and from 30% to 40% in …

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 …

Microbial enhanced oil recovery (MEOR) utilizes microorganisms and their byproducts to improve oil extraction from reservoirs. MEOR works by microbes reducing oil viscosity, producing …

Microbial enhanced oil recovery (MEOR) is an attractive, alternative oil recovery approach, which is claimed to potentially recover up to 50% of residual oil. ... In the first, oil movement through porous media is facilitated by altering the interfacial properties of the oil-water minerals – displacement efficiency (decrease in the IFT ...

As a promising method of tertiary oil recovery, microbial enhanced oil recovery (MEOR) involves the use of indigenous or specially screened microorganisms to produce specific metabolites by injecting formation or ground fermentation to enhance crude oil recovery. This paper discussed the mechanism of mobilizing trapped crude oil by ...

Microbial enhanced oil recovery (MEOR) is a tertiary oil recovery method which involves the injection of carefully screened microorganisms into the formation resulting in in situ fermentation to ...

Microbial enhanced oil recovery (MEOR) is one of the technologies that has received significant attention over the past several decades. Its advantages versus other enhanced oil recovery processes include reduced energy requirements versus thermal methods–such as steam flooding–and reduced chemical costs compared with chemical …

DOI: 10.1016/j.colsurfb.2007.11.006 Corpus ID: 10686697; Microbial surfactant-enhanced mineral oil recovery under laboratory conditions. @article{Bordoloi2008MicrobialSM, title={Microbial surfactant-enhanced mineral oil recovery under laboratory conditions.}, author={Naba K. Bordoloi and Bolin Kumar …

Microbial Enhanced Oil Recovery 73 great deal of rocks and fluids sampling and also laboratory investigations. In general, EOR processes can be classified into four main cate gories as thermal methods, chemical methods, miscible or solvent injection, and microbial methods. 4.1 Thermal processes

@article{Dopffel2018MicrobialIM, title={Microbial induced mineral precipitations caused by nitrate treatment for souring control during microbial enhanced oil recovery (MEOR)}, author={Nicole Dopffel and Felix K{"o}gler and Holger Hartmann and Paul Igor Costea and Eva Mahler and Andrea Herold and Hakan Alkan}, …

A joint research and industry program recently completed a 3-year in situ mineral extraction and metal recovery trial from a deep and complex black shale and sandstone ore body that would otherwise be uneconomical to mine (Filippov et al., 2017; Johnson, 2015). In these scenarios, the fractured ore body is treated with ferric iron-rich, …