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- Title
Bioconcentrations of Metals (Fe, Cu, Zn, Pb) in Earthworms (Eisenia fetida), Inoculated in Municipal Sewage Sludge: Do Earthworms Pose a Possible Risk of Terrestrial Food Chain Contamination?
- Authors
Suthar, Surindra; Singh, Sushma
- Abstract
The article discusses research that evaluated the potential ecological risks of metal bioaccumulation within composting earthworms (Eisenia fetida) during vermicomposting of hazardous wastes, such as sewage sludge. The sludge was diluted through an incorporation of cow manure in varied proportions and the vermicomposted sludge as well as the earthworms were evaluated for concentrations of iron, zinc, copper, and lead. While the metal accumulation decreased in the compost, it increased within the earthworms, suggesting that these toxins could persist into higher organisms on the food chain.
- Subjects
VERMICOMPOSTING; EARTHWORMS; EISENIA; BIOACCUMULATION; METAL toxicology; LEAD toxicology; ZINC; COPPER poisoning; IRON; FOOD chains; PHYSIOLOGY
- Publication
Environmental Toxicology, 2009, Vol 24, Issue 1, p25
- ISSN
1520-4081
- Publication type
Article
- DOI
10.1002/tox.20388