Copper, zinc, and iron bioleaching from polymetallic sulphide concentrate

Conić, Vesna; Vujasinović, Mirjana M. Rajčić; Trujić, Vlastimir; Cvetkovski, Vladimir

doi:10.1016/s1003-6326(14)63516-0

Cited by 26 publications

(23 citation statements)

References 28 publications

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“…In the one of the previous experiments without adaptation, bioleaching efficiency of 83% and 89% for Cu and Zn respectively were achieved for the 30 days [36].…”

Section: Lead Gold and Silver Recoverymentioning

confidence: 68%

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

et al. 2019

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There are many sources to increase value in an integrated mining–metallurgy context. The optimal strategy for concentration of minerals from the ore is one of these sources. The elements of mining-metallurgy operations from resources, infrastructure, mining site, processing, and metallurgy are mutually dependent, and reinforce and interact positively with each other to generate a combined value greater than the sum of their individual contributions. Bioleaching technology is an alternative processing technology for treatment of low-grade sulphide ore, and its application contributes to the achievement of better economic results than the conventional pyrometallurgical technology. This work presents the application of bioleaching technology in laboratory conditions for metal extraction from the polymetallic deposit Tenka in East Serbia, belonging to the company Serbia Zijin Bor Copper Doo (formerly the Mining Smelter Basin Bor Group). Bioleaching of sulphide polymetallic raw material is performed by chemolithoautotrophic microorganisms. Applying the bioleaching technology, the achieved recoveries of metals from the polymetallic ore are as follows: Cu 90%, Au 90%, Ag 80%, Zn 72% and Pb 90%. The calculated values for Net Present Value (NPV) and Internal Rate of Return (IRR) are $ 21.927 million and 12.55%, respectively.

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“…In the one of the previous experiments without adaptation, bioleaching efficiency of 83% and 89% for Cu and Zn respectively were achieved for the 30 days [36].…”

Section: Lead Gold and Silver Recoverymentioning

confidence: 68%

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

et al. 2019

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“…They observed that the bioleaching of marmatite concentrate was advantageous over that of the sphalerite and synthetic ZnS which clears that Zn extraction could be influenced by mineral properties. A polymetallic (Cu, Zn, Pb, Fe, Ag, and Au) sulphide concentrate was subjected to bioleaching studies by Vesna et al [14]. They have used a mixed culture of A. ferrooxidans, A. thiooxidans, and Leptospirillum ferrooxidans.…”

Section: Introductionmentioning

confidence: 99%

Bioleaching of Zn from sphalerite using Leptospirillum ferriphilum isolate: effect of temperature and kinetic aspects

Sundramurthy

Ramesh²,

Srinivasan

et al. 2020

Appl Biol Chem

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Biological methods for leaching of nonferrous and noble metals from its sulfide ores are widely applied at industrial enterprises of different countries. This process is based on the use of the oxidative activity of acidophilic microorganisms. Since all bio systems are quite sensitive to the temperature, bacterial leaching process also significantly effects. In the present study, the impact of temperature on bacterial leaching of Zn from its sulphide ore, sphalerite, was investigated using ore adapted iron oxidizing bacteria. The bacteria were isolated from mine drainage samples and subjected to gene sequencing. The acquired nucleotide sequence revealed that the isolate was Leptospirillum ferriphilum. The nucleotide sequence of L. ferriphilum isolate was submitted to National Center for Biotechnology Information (NCBI) and accession number KF743135 was assigned. Using the isolate, the Zn leaching data were collected in the 298-318 K temperature range. The results showed that leaching of Zn increases with temperature until optimum temperature of 313 K and achieves highest leaching efficiency of 96.96% within 20 days. Since bioleaching of minerals have become increasingly applied in different mining industries, there is immense important to analyze mechanistically-based kinetics for the design, optimization, operation, and control of biochemical processes. The kinetic study showed that the rate of Zn leaching was maximized at the optimum temperature. Further, the leaching data were analyzed using shrinking core model which revealed that the rate of leaching was inhibited by diffusion through product layer. Reaction kinetics is also to be contrasted with thermodynamics. Using Arrhenius law of thermodynamics, it was found that activation energy for Zn bioleaching reaction was 39.557 kJ mol −1. Such investigations will be necessitated for designing and implanting the ideal bioleaching system for metal bio-mining industries.

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“…The diversity investigation of Zijinshan commercial non‐aeration low‐grade copper extraction heap operated at 0.8 pH revealed that the 28.29% of retrieved 16S rRNA sequences were related with Leptospirillum genus even in the same site the highest 9% of the retrieved sequences were related with Leptospirillum genus . Bacterial genus of Leptospirillum had been previously isolated from the extremely low pH environments and suggested to play a predominant role in bioleaching of metals . Genus Leptospirillum commonly exists inside bioleaching tanks and ponds, mine heaps, and leaching pregnant liquor solutions .…”

Section: Discussionmentioning

confidence: 99%

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

Sajjad

Zheng

et al. 2018

J Basic Microbiol

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The exploration of microbial diversity in extremely acidic habitats has provided a vital base for the progression of minerals biotechnology. Three indigenous ironoxidizing acidophilic bacterial strains were isolated through serial dilution of enriched bacterial culture from Baiyin Copper Mine Stope, China. The morphological, biochemical, physiological, and phylogenetic characteristics of isolates were investigated. These isolates were motile, Gram-negative, and curved shape with pleomorphism except isolate WG101 that was a straight rod. The optimum growth pH and temperature for all isolates were 1.5 and 30°C, respectively, and showed extreme acidophilic nature. All the isolates showed obligate chemoautotrophic nature and used ferrous iron and pyrite as an energy source, however, isolates WG102 and WG103 were unable to use sulfur, while isolate WG101 could use elemental sulfur and reduced inorganic sodium thiosulfate as an energy source. The phylogenetic analyses based on 16S rRNA sequences revealed that the isolates WG101, WG102, and WG103 were homologous with Acidithiobacillus ferrooxidans strain AS2 (99%), Leptospirillum ferriphilum strain YSK (98%), and Leptospirillum ferrooxidans strain L15 (98%), respectively. These bacterial isolates showed efficient copper and zinc dissolution from the ore. The metals dissolution rate of At. ferrooxidans strain WG101 was 54.5 ± 4.33% (copper) and 49.6 ± 5% (zinc). The metals recovery rate of L.ferriphilum strain WG102 was 45.7 ± 3.5% (copper) and 40.5 ± 2.5% (zinc). The recovery rate of copper and zinc was 49.6 ± 4% and 46.5 ± 3% respectively in the case of L. ferrooxidans strain WG103. The findings of this study are consistent with the notion that the indigenous bacteria are more efficient in minerals dissolution. K E Y W O R D SAcidithiobacillus ferrooxidans, Baiyin Copper Mine, bioleaching, Leptospirillum ferriphilum, Leptospirillum ferrooxidansAbbreviations: AMD, acid mine drainage; EPS, exopolysaccharide; ORP, oxidation-reduction potential.

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Copper, zinc, and iron bioleaching from polymetallic sulphide concentrate

Cited by 26 publications

References 28 publications

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

Bioleaching of Zn from sphalerite using Leptospirillum ferriphilum isolate: effect of temperature and kinetic aspects

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

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