Column Bioleaching of Arsenic from Mine Tailings Using a Mixed Acidophilic Culture: A Technical Feasibility Assessment

Borja, Danilo; Lee, Eunseong; Silva, René A.; Kim, Heejae; Park, Jay Hyun; Kim, Hyun-Jung

doi:10.7844/kirr.2015.24.6.69

Cited by 8 publications

(3 citation statements)

References 25 publications

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“…Later, Panda et al [47] studied the effect of cell irrigation rates on Cu recovery in column experiments and determined that jarosite formation was lower at higher flow rates (i.e., 2.0 and 2.5 L/h). Similarly, our research team observed the relevance of bacterial adaptation for the bioleaching process [48]. In long-term column experiments (i.e., 436 days) we obtained up to 70% as removal efficiency.…”

Section: Bioleaching Of Mine Tailingsmentioning

confidence: 85%

Experiences and Future Challenges of Bioleaching Research in South Korea

et al. 2016

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This article addresses the state of the art of bioleaching research published in South Korean Journals. Our research team reviewed the available articles registered in the Korean Citation Index (KCI, Korean Journal Database) addressing the relevant aspects of bioleaching. We systematically categorized the target metal sources as follows: mine tailings, electronic waste, mineral ores and metal concentrates, spent catalysts, contaminated soil, and other materials. Molecular studies were also addressed in this review. The classification provided in the present manuscript details information about microbial species, parameters of operation (e.g., temperature, particle size, pH, and process length), and target metals to compare recoveries among the bioleaching processes. The findings show an increasing interest in the technology from research institutes and mineral processing-related companies over the last decade. The current research trends demonstrate that investigations are mainly focused on determining the optimum parameters of operations for different techniques and minor applications at the industrial scale, which opens the opportunity for greater technological developments. An overview of bioleaching of each metal substrate and opportunities for future research development are also included.

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Section: Bioleaching Of Mine Tailingsmentioning

confidence: 85%

Experiences and Future Challenges of Bioleaching Research in South Korea

et al. 2016

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“…Heap bioleaching is the most widespread commercial method being applied to nickel, zinc, cobalt and copper containing ores processing [10]. Heap bioleaching can also be applied for the detoxication of tailings containing high concentrations of heavy metals, such as arsenic [11]. The main advantages of heap bioleaching is the lower investments with infrastructure and operational costs due to the technological simplicity and lower energy requirement [12] when comparing with traditional pyrometallurgical and hydrometallurgical methods that annually consumes 6.13 × 10 8 GJ of energy for copper extraction [13].…”

Section: Introductionmentioning

confidence: 99%

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

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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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“…Prior works investigated the particle size of the tailings, the behavior of the froth during flotation, the age of the tailings, and the nature of the metal-bearing minerals (e.g., sulfides, oxides) as the main parameters affecting metal recovery [15][16][17][18]. Several recent studies also investigated bioleaching as a potential technology for removing heavy metals and sulfides from mine tailings [19][20][21]. Other innovative technologies for metal extraction from mine tailings were developed [22,23].…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of the Old Tailings at the Au-Ag-Cu Tiouit Mine (Anti-Atlas Morocco)

et al. 2019

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Tailings from the abandoned Tiouit mine site in Morocco are mainly composed of sulfides, hematite, and quartz. They contain 0.06–1.50 wt % sulfur, mostly in the form of pyrite, pyrrhotite, and chalcopyrite. The tailings also contain gold (3.36–5.00 ppm), silver (24–37 ppm), and copper (0.06–0.08 wt %). Flotation tests were conducted to reprocess the tailings for Au, Ag, and Cu recovery, and at the same time to prevent acid mine drainage (AMD) generation through the oxidation of sulfide minerals, including pyrite, sphalerite, arsenopyrite, chalcopyrite, galena. The flotation results confirmed that environmental desulfurization is effective at reducing the overall sulfide content in the tailings. The recovery of sulfides was between 69% and 75%, while Au recovery weight-yield was between 2.8% and 4.7%. The test that showed the best sulfur recovery rate and weight-yield was carried out with 100 g/t CuSO4 (sulfide activator) and 50 g/t of amyl xanthate (collector). The goal of this study was also to assess the remaining acid-generating potential (AP) and acid-neutralizing potential (NP) of the desulfurized tailing. The geochemical behavior of the initial tailings sample was compared to that of the desulfurized tailings using kinetic weathering cell tests. The leachates from the desulfurized tailings showed higher pH values than those from the initial tailings, which were clearly acid-generating. The residual acidity produced by the desulfurized tailings was most likely caused by the hydrolysis of Fe-oxyhydroxides.

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Column Bioleaching of Arsenic from Mine Tailings Using a Mixed Acidophilic Culture: A Technical Feasibility Assessment

Cited by 8 publications

References 25 publications

Experiences and Future Challenges of Bioleaching Research in South Korea

Experiences and Future Challenges of Bioleaching Research in South Korea

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

Desulfurization of the Old Tailings at the Au-Ag-Cu Tiouit Mine (Anti-Atlas Morocco)

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