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Título: Phyototoxicity and heavy metals speciation of stabilised sewage sludges
Fecha de publicación: 2004
Editorial: Elsevier
ISSN: 0304-3894
Materias relacionadas: 62 - Ingeniería. Tecnología
Palabras clave: Sewage sludge
Heavy metals
Sequential fractionation
Phytotoxicity assay
Resumen: The presence of heavy metals in the sludges produced in wastewater treatment plants restricts their use for agricultural purposes. This study looks at different types of sludges (aerobic, anaerobic, unstabilised and sludge from a waste stabilisation pond) and compares the distribution of the heavy metals they contain according to the treatment that they have undergone. The sewage sludges were subjected to chemical characterisation and phytotoxicity testing, in absence of substrate, to provide a preliminary assessment of their suitability for land application. In addition, the total quantity of metals (Cd, Cr, Cu, Ca, K, Fe, Mg, Ni, Na, Pb and Zn) was determined. The BCR (Community Bureau of Reference) method for heavy metal speciation was followed. It was confirmed that the total concentration of heavy metals did not exceed the limits set out by European legislation and that the stabilisation treatment undergone by the sludges strongly influenced the heavy metal distribution and the phases to which they were associated. The sludge extracts did not exert any significant adverse effect on the relative seed germination (RSG) of barley (Hordeum vulgare L.) or cress (Lepidium sativum L.), although the reduction in germination index (GI) indicates that some characteristics existed did have an adverse effect on root growth.
Autor/es principal/es: Fuentes, Ana
Lloréns, Mercedes
Sáez, José
Aguilar, Mª Isabel
Ortuño, Juan F.
Meseguer, Víctor F.
Facultad/Departamentos/Servicios: Ingeniería Química
Publicado en: Journal of Hazardous Materials, 108, 3, 2014
Versión del editor: 10.1016/j.jhazmat..2004.02.014
URI: http://hdl.handle.net/10201/49800
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 27
Derechos: info:eu-repo/semantics/openAccess
Aparece en las colecciones:Artículos: Ingeniería Química

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