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Open access
Embargo date
2028
Sustainable Development Goals
12 Consumo e produção responsáveisCollections
- IOC - Artigos de Periódicos [12967]
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A COMPREHENSIVE ASSESSMENT OF LEACHATE CONTAMINATION AT A NON‑OPERATIONAL OPEN DUMPSITE: MYCOFORA SCREENING, METAL SOIL POLLUTION INDICES, AND ECOTOXICOLOGICAL RISKS
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Abstract
The final disposal of municipal solid waste
(MSW) in dumpsites is still a reality worldwide, especially
in low- and middle-income countries, leading to
leachate-contaminated zones. Therefore, the aim of this
study was to carry out soil and leachate physicochemical,
microbiological, and toxicological characterizations from
a non-operational dumpsite. The L-01 pond samples presented
the highest physicochemical parameters, especially
chloride (Cl; 4101 ± 44.8 mg L−
1), electrical conductivity
(EC; 10,452 ± 0.1 mS cm−
1), and chemical oxygen demand (COD; 760 ± 6.6 mg L−
1) indicating the presence
of leachate, explained by its close proximity to the landfill
cell. Pond L-03 presented higher parameters compared
to pond L-02, except for N-ammoniacal and phosphorus
levels, explained by the local geological configuration,
configured as a slope from the landfill cell towards L-03.
Seven filamentous and/or yeast fungi genera were identified,
including the opportunistic pathogenic fungi Candida
krusei (4 CFU) in an outcrop sample. Regarding soil
samples, Br, Se, and I were present at high concentrations
leading to high soil contamination (CF ≤ 6). Pond L-02
presented the highest CF for Br (18.14 ± 18.41 mg kg−
1)
and I (10.63 ± 3.66 mg kg−
1), while pond L-03 presented
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