Temperature-driven variation in the removal of heavy metals from contaminated tailings leaching in northern Norway

Fu, Shuai; Lu, Jinmei

doi:10.1007/s10661-019-7244-3

Cited by 16 publications

(5 citation statements)

References 29 publications

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“…The positive effect of high temperatures in Cu dissolution from low-grade and concentrate ores were confirmed by other authors [10,34]. Fu and Lu [37] showed how the temperature plays an important role in the leaching of heavy metals from tailings. Furthermore, the effect of high temperatures on the leaching reactions can be explained by the Arrhenius Eq.…”

Section: Leaching Testssupporting

confidence: 64%

Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use of Sulfuric Acid and Chloride Solutions

Schueler

Aguiar

Vera

et al. 2021

J. Sustain. Metall.

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The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to evaluate three variables over a 4-h testing period: sulfuric acid concentration (0.01–1.0 mol/L H2SO4), sodium chloride (10–60 g/L NaCl), and temperature (20–70 °C). The design showed two optimum working regions: a combination of a high NaCl level, low H2SO4 level, and medium temperature level for lead leaching, while for copper and zinc, a combination of a medium–high H2SO4 level and a high temperature level. The concentration of NaCl had only a slight impact on their leaching. Based on these results, two-stage leaching was performed. The first stage was carried out under an experimental condition that favored the leaching of lead (60 g/L NaCl, 0.01 mol/L H2SO4, 45 °C, 1 h, 10:1 liquid-to-solid ratio), whereas the second stage maximized the leaching of copper and zinc (60 g/L NaCl, 0.5 mol/L H2SO4, 70 °C, 24 h, 10:1 liquid-to-solid ratio). The global leaching rate was 66.8 ± 3.0% copper, 84.1 ± 5.2% zinc, and 93.9 ± 3.2% lead. The iron and arsenic content were also leached by about 20 and 50% at the end of the second stage. The study demonstrated that the use of sulfate–chloride media in a two-stage leaching considerably improved the extraction of the desired metals and was, therefore, suitable for their recovery. Graphical Abstract

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Section: Leaching Testssupporting

confidence: 64%

Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use of Sulfuric Acid and Chloride Solutions

Schueler

Aguiar

Vera

et al. 2021

J. Sustain. Metall.

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show abstract

“…The leaching behavior has been known to be affected by operating conditions, e.g., temperature, pH, and reactivity or solubility between metal and liquid [35]. Since the leaching capacity and rate significantly increase as temperature rises [36], aerosols generated at higher temperatures induced by higher power are known to contain more metal elements. This study has the following limitations.…”

Section: Discussionmentioning

confidence: 99%

Effect of Heating on Physicochemical Property of Aerosols during Vaping

Kim

2022

IJERPH

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Many electronic cigarette manufacturers have offered different types of “high-end mods” that allow for controlled heating of the e-liquid. However, the controlled heating condition can drastically alter the inhaled aerosols’ physical properties and chemical substances, causing potential health risks. To investigate the contribution of heating on aerosol properties, we used four common power settings in the mods to conduct a physicochemical analysis. Our data showed that the aerosol mass and nicotine content in the aerosols increased at high power. Additionally, high power led to aerosolization of a viscous component in the e-liquid, increasing the viscosity of aerosol. However, the pH of the aerosol was constant regardless of the applied power. In addition, high-power operation made nicotine prone to oxidation, resulting in the color of the aerosol turning yellow. Lastly, we demonstrated that e-cigarette aerosol could contain various metals, including aluminum, arsenic, cadmium, chromium, copper, iron, magnesium, nickel, lead, and zinc. Even though these metal contents proportionally increased with the power setting, they remained far below the recommended exposure limits. Our finding demonstrates that the heating conditions of the e-cigarette change the physicochemical properties of the aerosols and their metal contents, thereby possibly affecting users’ oral and respiratory systems.

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“…Previous research has shown that, compared to the initial stable heavy metal activities, the oxidation-reduction reaction in mine tailings led to an increase in Pb, Zn, and Mn activities by 42–69% (Trifi et al, 2019). In cold regions, the amounts of heavy metals leached in tailings increases with the increase in temperature (Fu et al, 2019). Kalinovic et al (2019) investigated the heavy metal contents in soil and found that wind direction had an important impact on the distribution of heavy metal pollution in soil and that the heavy metal contents in the soils that were in the path of the prevailing wind were higher.…”

Section: Discussionmentioning

confidence: 99%

Heavy metal pollution characteristics of soil around a copper-nickel mine tailings pond in the northwest arid area of China and evaluation of desert phytoremediation potential

Shi

Jin

Zhou

et al. 2022

Preprint

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Phytoextraction and phytostabilization are two mechanisms used by plants to remove and stabilize heavy metals in soil. However, there has been little research on the extraction/stabilization of heavy metals by desert plants in arid areas. This study analyzed eight heavy metals (Cr, Ni, Cu, Zn, Cd, Pb, Mn, and As) in 10 desert plants and their growth matrices. In addition, the single factor pollution index and Nemerow comprehensive pollution index were used to evaluate soil pollution. Based on the biological accumulation factor and the biological concentration factor, the fuzzy evaluation method was used to evaluate plant extraction/stability potentials for heavy metals. The results showed that Cd, Cu, Ni, and Cr in the soil around the tailings pond were at the heavy pollution level, Mn and Pb pollution was moderate, and Zn and As pollution was light. The matrix factorization model showed that Cu and Ni came from industrial pollution; Cd and Cr came from atmospheric deposition and agricultural pollution; Pb came from traffic pollution; and Mn, Zn, and As came from natural sources. The metal contents of the desert plants exceeded the standard for normal plants, of which Cr contents in the Atriplex patens and Ammophila breviligulata Fernald aboveground parts were 35.63 and 53.77 mg/kg respectively, and the Ni contents in the Klasea centauroides subsp. polycephala (Iljin) L. Martins underground parts and the A. breviligulata Fernald aboveground parts were 102.67 and 101.67 mg/kg, respectively, exceeding the maximum toxicity threshold for Cr and Ni. Ammophila breviligulata Fernald had the highest plant comprehensive extraction coefficient (CEI) and plant comprehensive stability coefficient (CSI) at 0.81 and 0.83 respectively, indicating that it has strong heavy metal extraction and stabilization abilities. Therefore, A. breviligulata Fernald can be selected as a remediation species for heavy metal pollution in the soil around tailings reservoir areas.

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Temperature-driven variation in the removal of heavy metals from contaminated tailings leaching in northern Norway

Abstract: , conception and design, acquisition of data,analysis and interpretation of data, drafting the articale, revised and approved the manuscript.

Cited by 16 publications

References 29 publications

Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use of Sulfuric Acid and Chloride Solutions

Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the Use of Sulfuric Acid and Chloride Solutions

Effect of Heating on Physicochemical Property of Aerosols during Vaping

Heavy metal pollution characteristics of soil around a copper-nickel mine tailings pond in the northwest arid area of China and evaluation of desert phytoremediation potential

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