Metal-contaminated soil remediation by means of paper mill sludges addition: chemical and ecotoxicological evaluation
| Autor: | Tiziana Campisi, Bm Petronio, Maurizio Leoni, Antonella Iacondini, Marco Pietroletti, Nicoletta Calace |
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| Přispěvatelé: | Calace N, Campisi T, Iacondini A, Leoni M, Petronio BM, Pietroletti M |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Paper
Environmental remediation Health Toxicology and Mutagenesis Carbonates Industrial Waste Toxicology complex mixtures ecotoxicology Mining engineering Waste Management Soil pH Metals Heavy contaminates site Soil Pollutants Leaching (agriculture) Sewage business.industry Silicates Water Pollution technology industry and agriculture Soil chemistry Paper mill General Medicine Containment of Biohazards heavy metal Pollution Soil contamination Environmental chemistry Soil water Environmental science business |
| Popis: | Metal pollution of soils is a great environmental problem. The major risks due to metal pollution of soil consist of leaching to groundwater and potential toxicity to plants and/or animals. The objective of this study is to evaluate by means of chemical and ecotoxicological approach the effects of paper mill sludge addition on the mobile metal fraction of polluted metal soils. The study was carried out on acidic soil derived from mining activities and thus polluted with heavy metals, and on two paper mill sludges having different chemical features. The results obtained by leaching experiments showed that the addition of a paper mill sludge, consisting mainly of carbonates, silicates and organic matter, to a heavy-metal polluted soil produces a decrease of available metal forms. The carbonate content seems to play a key role in the chemical stabilisation of metals and consequently in a decrease of toxicity of soil. The leached solutions have a non-toxic effect. The mild remediation by addition of sludge has moreover a lasting effect. |
| Databáze: | OpenAIRE |
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