Bioleaching of arsenopyrite from Janggun mine tailings (South Korea) using an adapted mixed mesophilic culture

Ngoma, Emmanuel; Borja, Danilo; Smart, Mariette; Shaik, Kathija; Kim, Hyung-Seok; Petersen, Jochen; Harrison, Susan T.L.

doi:10.1016/j.hydromet.2018.08.010

Cited by 23 publications

(8 citation statements)

References 40 publications

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“…Wang and co-workers obtained 93.11%, 91.04% and 80.45% copper recovery from a low-grade sulfide ore (0.99% of total Cu; 35% chalcopyrite, 60% bornite and 5% chalcocite) with particle sizes varying from 5-8 mm, 5-15 mm and 5-20 mm, respectively, confirming the particle size effect [23]. Beyond the ore particles size, in general, heap bioleaching may also be affected by aeration rates, additives use (e.g., chloride and silver ions), temperature, microbial diversity and cells preadaptation to ores bleaching [3,14,16,[36][37][38]. These parameters may be tested in future columns bioleaching experiments in order to increase the Amazon region sulfide ores bioleaching efficiency.…”

Section: Ph and Eh Monitoringmentioning

confidence: 79%

“…The authors obtained 96% (approximately 15 g•L −1 ) copper recovery from a copper concentrate from black shale processing containing chalcopyrite setting the initial temperature to 46 • C during the first three days for bacterial growth and 50 • C during the metal bioleaching step [21]. Another strategy to increase metal recovery efficiency is the bacterial pre-adaptation to bioleaching by successive replacement of the energy substrate in the culture medium by the mineral sample along subcultures [38]. This technique showed to be more efficient during biooxidation of refractory gold concentrates for arsenic removal, when compared to unadapted microbial cultures [39].…”

Section: Stirred Reactors Bioleachingmentioning

confidence: 99%

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Bioleaching for Copper Extraction of Marginal Ores from the Brazilian Amazon Region

Nascimento

Lucheta

Palmieri

et al. 2019

Metals

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The use of biotechnology to explore low-grade ore deposits and mining tailings is one of the most promising alternatives to reduce environmental impacts and costs of copper extraction. However, such technology still depends on improvements to be fully applied in Brazil under industrial scale. In this way, the bioleaching, by Acidithiobacillus ferrooxidans, in columns and stirred reactors were evaluated regarding to copper extraction of a mineral sulfide and a weathered ore from the Brazilian Amazon region. Samples (granulometry of 2.0/4.75 mm) were characterized by X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF) spectrometry and scanning electrons microscopy (SEM). The pH and Oxidation-reduction potential (Eh) were daily monitored and leachate samples were collected for copper extraction determination by EDXRF. After 47 days, the columns bioleaching efficiency was 1% (1298 mg Cu·L−1) and 0.95% (985 mg Cu·L−1) for 2.00/4.75 mm sulfide ore, respectively, whereas the stirred reactors bioleaching resulted in 4% (348 mg Cu·L−1) for the mineral sulfide and 47% (295.5 mg Cu·L−1) for the weathered ore.

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Section: Ph and Eh Monitoringmentioning

confidence: 79%

Section: Stirred Reactors Bioleachingmentioning

confidence: 99%

Bioleaching for Copper Extraction of Marginal Ores from the Brazilian Amazon Region

Nascimento

Lucheta

Palmieri

et al. 2019

Metals

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“…On the one hand, regarding to the microbial metabolisms, it is known that they are conditioned by the operational temperature, pH, redox potential and trace minerals concentrations. In the literature, it has been described that acidophilic cultures operate under mesophilic, 20° -30° C, and thermophilic, above 45 ° C, conditions (Deng et al, 2017;Ngoma et al, 2018). Regarding to the operational pH values, it is advisable to keep a low pH below 2.0 to avoid iron precipitation and additional sludge formation (Demir et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A classical modelling of abandoned mine tailings' bioleaching by an autochthonous microbial culture

Medina-Díaz

Acosta

Muñoz

et al. 2022

Journal of Environmental Management

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“…Compared to batch shaking tests, dynamic column experiments more closely mimic the bioleaching processes that are effective under real conditions (heap-scale) 15 – 17 . In the last years, several works have been published on the evaluation and analysis of residues and their reuse 18 .…”

Section: Introductionmentioning

confidence: 99%

Post-measurement compressed calibration for ICP-MS-based metal quantification in mine residues bioleaching

Rito

Almeida

Coimbra

et al. 2022

Sci Rep

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Bioleaching is an actual economical alternative to treat residues, which allows, depending on the chosen strategy, two possible outcomes: (1) a leachate enriched with target metals, or (2) a residue enriched in target metals through the leaching of interfering components (IC). This work aimed to study the metals released by bioprocessing the Panasqueira mine tailings, as a strategy to increase critical metals' relative concentration in residues. Biostimulation of the local microbiota was compared to a bioaugmentation approach using the autochthonous Diaphorobacter polyhydroxybutyrativorans strain B2A2W2. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was selected to study the metals released in the leachate through multi-element external standards. A new data treatment method was developed to use a preliminary sweep of intensities to quantify the non-initial target metals concentration in the leachate, based on preliminary ICP-MS intensity measurements. The results demonstrated that biostimulation was an efficient bioleaching strategy for the IC silicon, aluminium, magnesium, selenium, manganese, zinc, iron, and copper, by decreasing concentration, resulting in a relative increase in the gallium and yttrium (10x) levels in the treated residue. The strategy followed to quantify a large number of elements with ICP-MS using a reduced number of data points for calibration proved valid and speeded up the analytical process.

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Bioleaching of arsenopyrite from Janggun mine tailings (South Korea) using an adapted mixed mesophilic culture

Cited by 23 publications

References 40 publications

Bioleaching for Copper Extraction of Marginal Ores from the Brazilian Amazon Region

Bioleaching for Copper Extraction of Marginal Ores from the Brazilian Amazon Region

A classical modelling of abandoned mine tailings' bioleaching by an autochthonous microbial culture

Post-measurement compressed calibration for ICP-MS-based metal quantification in mine residues bioleaching

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