Assessment of the mobility, bioaccessibility, and ecological risk of Pb and Zn on a dirt road located in a former mining area—Ribeira Valley—Brazil

Kasemodel, Mariana Consiglio; Papa, Thiago Bueno Ruiz; Sígolo, Joel Barbujiani; Rodrigues, Valéria Guimarães Silvestre

doi:10.1007/s10661-019-7238-1

Cited by 21 publications

(14 citation statements)

References 59 publications

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“…The relative abundance of Zn in the solid fractions in tailing samples decreased in the order of F1 > F4 > F2 > F3. These results were similar with those found by Kasemodel et al (2019) in soil samples from a former Pb slag deposit and in a Pb beneficiation Plant at Adrianópolis, state of Paraná, southern of Brazil.…”

Section: Sequential Extractionsupporting

confidence: 89%

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Respiratory bioaccessibility and solid phase partitioning of potentially harmful elements in urban environmental matrices

Boim

Patinha

Wragg

et al. 2021

Science of The Total Environment

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Studies regarding the role of geochemical processes in urban environmental matrices (UEM) and their influence on respiratory bioaccessibility in humans are scarce in humid tropical regions, especially in Brazil. Contaminated UEM are potentially hazardous to humans if particles < 10 µm in diameter are inhaled and reach the tracheobronchial region. In this study, we evaluated samples collected in Brazilian UEM with a large environmental liability left by former mining industries and in a city with strong industrial expansion. UEM samples were classified into soil, sediment and mine tailings according to the characteristics of the collection sites.The respiratory bioaccessibility of potentially harmful elements (PHE) was evaluated using artificial lysosomal fluid (ALF, pH 4.5), and the BCR-sequential extraction was performed to evaluate how the respiratory bioaccessibility of the PHE was related to the solid phase partitioning. The bioaccessible fraction (BAF) ranged from 54 -98% for Cd; 21 -89% for Cu; 46 -140% for Pb, 35 -88% for Mn and; 41 -84% for Zn. The average BAF of the elements decreased in the following order: Soil: Cd> Pb> Mn> Zn> Cu; Tailing: Pb> Cd> Zn> Mn> Cu; and Sediments: Pb> Mn> Cd> Zn> Cu. BCR-fractions were useful to predict the PHE bioaccessibility (R² = 0.79 -0.98), thus suggesting that particle geochemistry and mineralogy can influence PHE behaviour in the pulmonary fluid. Therefore, this approach provides a combination of quantitative and qualitative data, which allows us to carry out a more realistic assessment of the current situation of the potentially contaminated site and possible alternatives for decision-making by the stakeholders.

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Section: Sequential Extractionsupporting

confidence: 89%

“…The BCR-modified method (Rauret et al, 1999) has been successfully applied in studies with several environmental matrices such as soils, sediments and dust (Kasemodel et al, 2019;Lu and Kang, 2018;Unda-Calvo et al, 2017;Zhao et al, 2018). The sequential extraction was performed according to Rauret et al (1999) in three steps.…”

Section: Sequential Extractionmentioning

confidence: 99%

Respiratory bioaccessibility and solid phase partitioning of potentially harmful elements in urban environmental matrices

Boim

Patinha

Wragg

et al. 2021

Science of The Total Environment

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“…Some studies have also pointed out that improper slag disposal may cause serious ecological problems. For example, the study of Kasemodel et al (2019) reveals that during transportation of slags from the smelter to the disposal site, a dirt road was heavily contaminated by slag fragments [4]. The authors conclude that high metal content in the dirt road constitutes a serious risk for the nearby population because the material is easily aerated and transported on the wind, and can be easily absorbed through inhalation [4].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the study of Kasemodel et al (2019) reveals that during transportation of slags from the smelter to the disposal site, a dirt road was heavily contaminated by slag fragments [4]. The authors conclude that high metal content in the dirt road constitutes a serious risk for the nearby population because the material is easily aerated and transported on the wind, and can be easily absorbed through inhalation [4]. Another study of Forghani et al (2018) aimed at human risk assessment in southeastern Iran indicated a non-carcinogenic and carcinogenic risk to the population related with Cu smelting, which caused elevated concentrations of Cu and As in soils [5].…”

Section: Introductionmentioning

confidence: 99%

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

Potysz

Kierczak

2019

Minerals

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The aim of this study was to evaluate the feasibility of (bio)hydrometallurgical methods for metal extraction from historical copper slags. Two types of slags (amorphous slag—AS, and crystalline slag—CS) were subjected to 24 to 48 h of leaching with: (i) Sulfuric acid at 0.1, 0.5, and 1 M concentrations at 1%, 5%, and 10% pulp densities (PDs); and (ii) normality equivalent (2 N) acids (sulfuric, hydrochloric, nitric, citric, and oxalic) at pulp densities ranging from 1% to 2%. Bioleaching experiments were performed within 21 days with Acidithiobacillus thiooxidans accompanied by an abiotic control (sterile growth medium). The results demonstrated that the most efficient treatment for amorphous and crystalline slag was bioleaching at 1% PD over 21 days, which led to extraction of Cu at rates of 98.7% and 52.1% for AS and CS, respectively. Among the chemical agents, hydrochloric acid was the most efficient and enabled 30.5% of Cu to be extracted from CS (1% PD, 48 h) and 98.8% of Cu to be extracted from AS (1% PD, 24 h). Slag residues after leaching were characterized by strong alteration features demonstrated by the complete dissolution of fayalite in the case of CS and the transformation of AS to amorphous silica and secondary gypsum. Based on this study, we conclude that amorphous slag is a more suitable candidate for potential metal recovery because of its generally high susceptibility to leaching and due to the generation of residue significantly depleted in metals as the end product. The inventory of economically relevant metals showed that 1 ton of historical copper slag contains metals valued at $47 and $135 for crystalline and amorphous slag, respectively, suggesting that secondary processing of such materials can potentially be both economically and environmentally viable.

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“…The Bureau de Recherches Géologiques et Miniéres (BRGM, French Geological Survey) estimates that there are more than 5200 million tonnes of waste rock and 1100 million tonnes of tailings stored in abandoned mines in the EU (BRGM, 2001). The high volume of EW in abandoned mines has led to human health concerns as these PTE tend to persist in the environment (Boente et al, 2020;Damian et al, 2018;de Souza et al, 2015;Delil and Koleli, 2019;Edokpayi et al, 2016;Karlsson et al, 2018;Kasemodel et al, 2019;Kaupilla et al, 2018;Khelifi et al, 2019;Petrella et al, 2019a;Petrella et al, 2019b;Väänänen et al, 2016;Wang et al, 2020;Yang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Incorporating oral bioaccessibility into human health risk assessment due to potentially toxic elements in extractive waste and contaminated soils from an abandoned mine site

et al. 2020

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Assessment of the mobility, bioaccessibility, and ecological risk of Pb and Zn on a dirt road located in a former mining area—Ribeira Valley—Brazil

Cited by 21 publications

References 59 publications

Respiratory bioaccessibility and solid phase partitioning of potentially harmful elements in urban environmental matrices

Respiratory bioaccessibility and solid phase partitioning of potentially harmful elements in urban environmental matrices

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

Incorporating oral bioaccessibility into human health risk assessment due to potentially toxic elements in extractive waste and contaminated soils from an abandoned mine site

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