A new approach for the assessment of the environmental risk of a soil-like fraction in landfills due to PTE contamination
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View abstract on PubMed
Summary
This summary is machine-generated.Soil-like fractions from landfills contain potentially toxic elements (PTEs), posing environmental risks. Quantile analysis reveals uneven pollution, with cadmium and nickel being key concerns, but deeper fractions show low risk and potential for reuse.
Area Of Science
- Environmental Science
- Geochemistry
- Waste Management
Background
- Soil-like fractions from landfills are a potential resource in a circular economy.
- Potentially toxic elements (PTEs) in these fractions hinder their reuse.
- Assessing contamination and ecological risk is crucial for sustainable landfill mining.
Purpose Of The Study
- To evaluate PTE contamination and ecological risk in landfill soil-like fractions.
- To apply quantile analysis for a nuanced understanding of pollution distribution.
- To identify fractions suitable for potential reuse after appropriate treatment.
Main Methods
- A landfill in Volgograd was studied.
- Contents of cadmium (Cd), nickel (Ni), lead (Pb), mercury (Hg), copper (Cu), and zinc (Zn) were analyzed.
- Quantile analysis and cumulative distribution functions were used to assess contamination levels and environmental risks.
Main Results
- Hg, Pb, and Zn levels were low and posed no significant environmental risk.
- Cd, Ni, and Cu were the primary contaminants, indicating uneven pollution distribution.
- A significant portion of the soil-like fraction presents moderate to very high pollution levels and environmental risks, primarily due to Cd and Ni.
Conclusions
- Quantile analysis provides a novel approach to assess ecological risks of landfill soil-like fractions.
- Fractions at depths greater than 2.5 meters exhibit low pollution and environmental risk, suggesting potential for isolation and reuse after detoxification.
- This research supports informed decision-making for sustainable waste utilization in landfill mining operations.
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