Impact of municipal solid waste dumpsites on trace metal contamination levels in the surrounding area: a case study in West Africa, Abidjan, Cote d’Ivoire

The impact of uncontrolled municipal dumping sites on metal contamination in the surrounding waters, sediments, and soils are of great concern in many developing countries. Total concentrations of trace metals Cd, Zn, Cu, Pb, Ni, and Co were measured in 33 sediments collected in the vicinity of the...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-06, Vol.28 (24), p.30425-30435
Main Authors: Soumahoro, Naminata Sangaré, Kouassi, N’guessan Louis Berenger, Yao, Koffi Marcellin, Kwa-Koffi, Edith Kouassi, Kouassi, Aka Marcel, Trokourey, Albert
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Cadmium
Carbon content
Contamination
Copper
Developing countries
Earth and Environmental Science
Ecological effects
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental risk
Environmental science
LDCs
Lead
Metal concentrations
Municipal solid waste
Municipal waste management
Nickel
Organic carbon
Review Article
Sediment load
Sediment pollution
Sediments
Soil contamination
Solid waste management
Total organic carbon
Trace metals
Waste Water Technology
Water Management
Water Pollution Control
Zinc
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Summary:The impact of uncontrolled municipal dumping sites on metal contamination in the surrounding waters, sediments, and soils are of great concern in many developing countries. Total concentrations of trace metals Cd, Zn, Cu, Pb, Ni, and Co were measured in 33 sediments collected in the vicinity of the Akouedo dumpsite (Abidjan, Cote d’Ivoire) and in a baseline station. The Cu, Zn, Cd, and Pb concentrations in surface sediments around the dumpsite were at least three times higher than those at the reference station, suggesting that the Akouedo dumping site is a significant contamination source of these metals to the surrounding sediments. The extent of contamination affects sediment as deep as 100 cm. Sediment pH and total organic carbon content control the distribution of Cu, Zn, and Cd in subsurface sediments. Significant Cd, Zn, and Cu enrichments were measured at the dumpsite and its surrounding environment. Zn concentrations in the sediments might cause high ecological risks at 46% of the samples based on the sediment quality guidelines (SQGs). Single and sequential extraction results showed a low mobility rate of Cd, Cu, Pb, and Ni from sediments around the dumpsite. However, the results suggest that the high total metal concentrations in the dumpsite sediments have resulted in a significant metal load in the surrounding environment.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-021-13987-3