The role of iron in the rare earth elements and uranium scavenging by Fe–Al-precipitates in acid mine drainage

Moraes, Mateus Lanna Borges de; Ladeira, Ana Cláudia Queiroz

doi:10.1016/j.chemosphere.2021.130131

Cited by 14 publications

(5 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fact that ΣREEs concentrations are significantly higher in the marsh soil of the distal zone, where attenuation processes related to neutralization reactions are occurring, suggests that REEs are scavenged from the water under near-neutral conditions, and then immobilized or fixed by soil components. Recent studies have highlighted the role of iron in the REE scavenging by Fe-Al-precipitates in AMD systems [55,59]. Leaching experiments performed on sediments of the Huelva estuary showed that, at a pH of 6, most of the REEs are found concentrated in ochre precipitates [40], hence adsorption onto or co-precipitation with iron oxy-hydroxides could be responsible for REE retention, just as with heavy metals, as pointed out by Grantcharova and Fernández-Caliani [35].…”

Section: Mineralogical Controls On Ree Retentionmentioning

confidence: 93%

Enrichment and Fractionation of Rare Earth Elements in an Estuarine Marsh Soil Receiving Acid Discharges from Legacy Sulfide Mine Wastes

Fernández-Caliani

Grantcharova

2021

Soil Systems

View full text Add to dashboard Cite

This paper provides new insights into the geochemical cycling of rare earth elements (REEs) in acid sulfate soils developed on salt marsh sediments of the Huelva estuary (Spain) as a result of sulfide mineral oxidation in abandoned ore stockpiles. The study was aimed at determining the REE abundance, fractionation pattern and mineralogical control of the dispersal and retention of REEs in the soil system. Forty-one samples were collected at 13 core sampling sites along two transects extending across the degraded marshland, and they were subjected to XRD, ESEM-EDS and ICP-MS analyses. Measurements revealed that the soil receiving acid discharges has relatively high concentrations of ΣREEs (174.77 ± 19.77 mg kg−1) compared to local baseline concentrations. Shale-normalized REE patterns are generally flat, but a slight middle REE (MREE) enrichment is consistently apparent in all soil samples, involving relatively low LaN/GdN ratios (0.83 ± 0.08) and GdN/LuN ratios up to 1.42. The convex-upward REE pattern supports the possibility that iron oxy-hydroxide minerals play an important role in MREE retention through adsorption and co-precipitation mechanisms. Efflorescent sulfate salts left on the topsoil by the evaporation of acid waters show a strong depletion of light REEs (LaN/GdN = 0.16 ± 0.10) and act as a temporary reservoir of labile MREEs and heavy REEs during dry periods.

show abstract

Section: Mineralogical Controls On Ree Retentionmentioning

confidence: 93%

Enrichment and Fractionation of Rare Earth Elements in an Estuarine Marsh Soil Receiving Acid Discharges from Legacy Sulfide Mine Wastes

Fernández-Caliani

Grantcharova

2021

Soil Systems

View full text Add to dashboard Cite

show abstract

“… To assess the correlation of observed concentrations of Zn and Nd, as related constitutes to weathering processes, as well as to MAST in terms of driving reaction kinetics and weathering front area, Pearson Correlation tests were performed and deemed statistically significant if p-values were <0.05 (Table S6). − …”

Section: Materials and Methodsmentioning

confidence: 99%

Enhanced Rare Earth Element Mobilization in a Mountain Watershed of the Colorado Mineral Belt with Concomitant Detection in Aquatic Biota: Increasing Climate Change-Driven Degradation to Water Quality

Rue

McKnight

2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

In the western USA, one legacy of historic mining is drainage of acidic, metal-rich water generated by exposure to oxygen of sulfide minerals in mine workings, referred to as acid mine drainage (AMD). Streams receiving AMD and natural acid rock drainage (ARD) have a low pH, high dissolved metal concentrations, and extensive streambed oxide deposits. Recently, enhanced ARD generation in the Snake River watershed in the Rocky Mountains has been shown to be associated with warmer summer air temperatures, which has been attributed to expanding weathering fronts that promote oxidation due to earlier drying of shallow soils. In mountain watersheds where complex orogeny disseminated minerals throughout the landscape, weathering processes may also mobilize rare earth elements (REEs). We report that in the Snake River REEs are currently distributed in streams at concentrations ranging from 1 to 100 μg/L. Further, analysis of archived sample indicates that REE increases over time are also associated with increased summer air temperatures. In downstream reaches where the Snake River discharges into a water supply reservoir, colloidal and particulate metal oxides are abundant and sorptive processes may influence REE speciation. We also show that REEs accumulate in benthic invertebrates at concentrations comparable to toxic metals associated with ARD.

show abstract

“…Fifty to 100% recovery efficiency can be obtained for various metals (Kumar and Pakshirajan, 2021;Menzel et al, 2021). Several technologies involved in recovering metals from AMD mainly focused on selective precipitation by adjusting the wastewater pH (Hu et al, 2022;de Moraes and Ladeira, 2021). Besides the selective precipitation by adjusting pH, sulfide and phosphate precipitation were also mentioned to recover the soluble metals in AMD (Hermassi et al, 2022;Menzel et al, 2021).…”

Section: Membrane Distillation Ironmentioning

confidence: 99%

Emerging Strategies for Mitigating Acid Mine Drainage Formation and Environmental Impacts: A Comprehensive Review of Recent Advances

Wibowo,

Imron,

Kurniawan

et al. 2023

Sci. Technol. Indones

View full text Add to dashboard Cite

Acid mine drainage (AMD) is a significant threat to the environment due to its high acidity and metal ion content. To effectively eliminate pollutants from AMD, various approaches are necessary. This review aims to provide a comprehensive understanding of recent advances in AMD mitigation. While treatment technologies have developed to eliminate AMD, they often produce sludge as a by-product and require expensive maintenance. As a cost-effective alternative, the recovery of AMD resources can reduce toxicity and promote reuse of heavy metals and rare earth elements. This review also analyzes the challenges and prospects of AMD mitigation implementation, including current mitigation conditions and knowledge gaps. Researchers can benefit from this review by gaining insight into research progress in this area, identifying strengths and weaknesses of current AMD mitigation applications, and exploring future research directions.

show abstract

The role of iron in the rare earth elements and uranium scavenging by Fe–Al-precipitates in acid mine drainage

Cited by 14 publications

References 40 publications

Enrichment and Fractionation of Rare Earth Elements in an Estuarine Marsh Soil Receiving Acid Discharges from Legacy Sulfide Mine Wastes

Enrichment and Fractionation of Rare Earth Elements in an Estuarine Marsh Soil Receiving Acid Discharges from Legacy Sulfide Mine Wastes

Enhanced Rare Earth Element Mobilization in a Mountain Watershed of the Colorado Mineral Belt with Concomitant Detection in Aquatic Biota: Increasing Climate Change-Driven Degradation to Water Quality

Emerging Strategies for Mitigating Acid Mine Drainage Formation and Environmental Impacts: A Comprehensive Review of Recent Advances

Contact Info

Product

Resources

About