Hydrothermally-altered feldspar as an environmentally-friendly technology to promote heavy metals immobilization: Batch studies and application in smelting-affected soils

Ribeiro, Paula Godinho; Souza, Jean Michel Pereira; Rodrigues, Marcos; Ribeiro, Ivan Célio Andrade; Carvalho, Teotônio Soares de; Lopes, Gertrudes Teixeira; Li, Yuncong; Guilherme, Luiz Roberto Guimarães

doi:10.1016/j.jenvman.2021.112711

Cited by 10 publications

(4 citation statements)

References 63 publications

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“…The same has been observed for CaO, which may promote the formation of soil aggregates binding heavy metals [59]. In our results, K 2 O reduces Co and Mn, which agrees with the findings in other studies [60]. However, for Al and V, higher values of K 2 O increase metal content (K 2 O ≤ 2.1 = L.V.).…”

Section: Rock Chemistry Vegetation Indices and Precipitation Affect M...supporting

confidence: 92%

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Lotz

Opp

2022

Applied Sciences

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River sediments often contain potentially harmful pollutants such as metals. Much research has been conducted to identify factors involved in sediment concentrations of metals. While most metal pollution studies focus on smaller scales, it has been shown that basin-scale parameters are powerful predictors of river water quality. The present study focused on basin-scale factors of metal concentrations in river sediments. The study was performed on the contiguous USA using Random Forest (R.F.) to analyze the importance of different factors of the metal pollution potential of river sediments and evaluate the possibility of assessing this potential from basin characteristics. Results indicated that the most important factors belonged to the groups Geology, Dams, and Land cover. Rock characteristics (contents of K2O, CaO, and SiO2) and reservoir drainage area were strong factors. Vegetation indices were more important than land cover types. The response of different metals to basin-scale factors varied greatly. The R.F. models performed well with prediction errors of 16.5% to 28.1%, showing that basin-scale parameters hold sufficient information for predicting potential metal concentrations. The results contribute to research and policymaking dependent on understanding large-scale factors of metal pollution.

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Section: Rock Chemistry Vegetation Indices and Precipitation Affect M...supporting

confidence: 92%

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Lotz

Opp

2022

Applied Sciences

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“…The results suggest that rehabilitation occurs slowly in the mining areas studied, especially in TPs, due to the strong soil chemical and physical limitations. Thus, alternatives for revegetation with species adapted to these conditions, in addition to the application of conditioning practices such as phytoremediation of PTEs and the incorporation of inorganic and organic amendments are recommended (Martins et al, 2018; Ribeiro et al, 2021; Ribeiro, Aragão, et al, 2022). This can improve soil structure and fertility, allowing it to become a more stable and healthier biological system.…”

Section: Discussionmentioning

confidence: 99%

Combining approaches for environmental assessment of rehabilitated gold‐mining areas in the Eastern Amazon

Ramos,

de Oliveira,

Ribeiro

et al. 2024

Land Degrad Dev

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Monitoring key soil and vegetation attributes in mining areas under environmental rehabilitation is essential to ensure that the intervention techniques are effective. There are several approaches to monitoring mining areas and their integration is necessary to process large amounts of information. Thus, this study aimed to (i) assess soil multi‐contamination with potentially toxic elements (PTE) and human health risks; (ii) obtain a soil quality index with soil fertility data; (iii) calculate spectral index; (iv) show rehabilitation status based on vegetation attributes, and (v) compile these indices in a single measure. Four tailings' ponds (TPs), two waste piles (WPs), and an area of native forest from a gold mine in the Carajás National Forest were evaluated. Soil quality and vegetation cover are good in forest areas, with no evidence of PTE contamination. On the other hand, the TPs have poor fertility and vegetation cover, as well as higher levels of PTE. Human health risk indices obtained for all PTE were lower than 1, indicating a low risk to human health. The results of integrating the different indices suggest that the environmental conditions of the WPs are better than those of the TPs, which are still far from the environmental conditions of native areas. Soil attributes and vegetation development in TPs areas could be enhanced by the incorporation of organic materials and fertilizers and by planting species with phytoremediation potential. Finally, the integrative approach of the different indices proved to be useful in assessing the rehabilitation progress of the areas.

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“…3,24 The stabilization/immobilization technique is an in situ remediation treatment that is cost-effective and environmentally friendly (Xia et al, 2019). 55 Various inorganic materials, such as clay minerals, 42 lime, 59 nanomaterials, 5 metal oxides, 31,52 and metal-organic frameworks, 58 have been used to immobilize Cd(II) and Pb(II) in contaminated soils. Additionally, organic materials, such as biochar, 6,25,28,34,43 activated carbon, 10 and chitosan, 69 have been used as amendments to immobilize HMs, including Cd(II) and Pb(II) in soils.…”

Section: Introductionmentioning

confidence: 99%