Impact of the Red Mud Disposal on Several Floodplain Lagoons of the Lower Orinoco River

Mora, Abrahan; Pisapia, Daniel; González, Nirson; Handt, Helga; Moreau, Cristina; Vásquez, Yaneth; Márquez, Luisa; Alfonso, Juan A.

doi:10.1007/s11270-015-2447-x

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…In addition, rivers and land were contaminated across a large area, with an estimated 800 ha of agricultural land covered by a red mud layer 5-10 cm deep [25]. Other accidents involving red mud have been reported in other countries [26,27]. Li [28] China Oceania the majority occurring since 1950.…”

Section: Introductionmentioning

confidence: 99%

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

Yue

Heal

Friesl-Hanl

2017

Journal of Hazardous Materials

202

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This review focuses on the applicability of red mud as an amendment for metal/metalloid-contaminated soil. The varying properties of red muds from different sources are presented as they influence the potentially toxic element (PTE) concentration in amended soil. Experiments conducted worldwide from the laboratory to the field scale are screened and the influencing parameters and processes in soils are highlighted. Overall red mud amendment is likely to contribute to lowering the PTE availability in contaminated soil. This is attributed to the high pH, Fe and Al oxide/oxyhydroxide content of red mud, especially hematite, boehmite, gibbsite and cancrinite phases involved in immobilising metals/metalloids. In most cases red mud amendment resulted in a lowering of metal concentrations in plants. Bacterial activity was intensified in red mud-amended contaminated soil, suggesting the toxicity from PTEs was reduced by red mud, as well as indirect effects due to changes in soil properties. Besides positive effects of red mud amendment, negative effects may also appear (e.g. increased mobility of As, Cu) which require site-specific risk assessments. Red mud remediation of metal/metalloid contaminated sites has the potential benefit of reducing red mud storage and associated problems.

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Section: Introductionmentioning

confidence: 99%

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

Yue

Heal

Friesl-Hanl

2017

Journal of Hazardous Materials

202

View full text Add to dashboard Cite

show abstract

“…The global inventory of red mud continued to raise the total amount of red mud stored in land in 2008 estimated to be over 2.7 billion tons [3]. Nevertheless, an annual growth rate of the red mud is estimated approximately 120 million tons worldwide [4]. About 50 million tons of red mud is stored in Hungary [5] in land-based disposal pits.…”

Section: Introductionmentioning

confidence: 99%

Analysis of soil contamination with heavy metals in (the three) highly contaminated industrial zones

et al. 2020

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Soils of industrial regions are more sensitive to transfer and accumulate anthropogenic pollution, especially in the case of a Havaria. The environmental effects of three aluminium plants-a working plant (Tajikistan), a storage plant (Slovakia) and a Havaria-affected plant (Hungary)-were examined by the determination of the contamination levels. In addition, the research focus was on to identify and compare the topsoil chemical properties near the aluminium plants and to assess the effects of the red mud accident in Hungary (Ajka), by analysing contaminated soil in this particular area. Using X-ray fluorescence (XRF) spectroscopy analysis, amount of 9 toxic metals in the shallow topsoil (0-20, 20-40 cm) from industrial areas were measured. Considering all of the studied areas around aluminium plants, extreme concen

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Climate vulnerability of South American freshwater fish: Thermal tolerance and acclimation

et al. 2021

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Freshwater fish are restricted by their physiology to rivers and lakes, and are generally limited in their capacity to disperse across basins. As a result, there is often a close match between the evolutionary history of river basins and their natural history. Thus, the regional landscape and ecological features, such as temperature, have shaped the evolution and adaptation of local fish assemblages. Climate change is expected to affect fish diversity and increase extinction, especially in low latitudes, and it has been suggested that species that inhabit low latitude species are more susceptible since they live close to their maximum thermal limits and have low capacity for acclimation. To understand the mechanisms of variation in thermal tolerance across a broad‐scale of South American fishes is fundamental to be able to assess the vulnerability of species and habitat to global warming. Herein, we present the first attempt to analyze the vulnerability of South American freshwater fish species, based on the review of upper thermal limits of 106 species from a broad range of latitudinal habitats. Our findings show that upper thermal limits decrease with latitude, while the thermal safety margin (TSM) increase. Furthermore, the latitude has little effects on the acclimation response ratio, and the TSM decreased with rising temperatures. These data suggest that thermal phenotypic acclimation has low potential for mitigating global warming. These results indicate that South American fish species living in tropical areas are more susceptible to global warming since they are already living close to their maximum habitat temperature.

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Impact of the Red Mud Disposal on Several Floodplain Lagoons of the Lower Orinoco River

Cited by 10 publications

References 39 publications

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

The use of red mud as an immobiliser for metal/metalloid-contaminated soil: A review

Analysis of soil contamination with heavy metals in (the three) highly contaminated industrial zones

Climate vulnerability of South American freshwater fish: Thermal tolerance and acclimation

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