English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/28764
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

By-products as amendment to improve biochemical properties of trace element contaminated soils: Effects in time

AutorBurgos, Pilar ; Madejón, Paula ; Cabrera, Francisco ; Madejón, Engracia
Palabras claveEDTA extraction
CaCl2 extraction
Remediation
Frequency of application
Semi-arid condition
Fecha de publicación2010
CitaciónInternational Biodeterioration & Biodegradation 64: 481-488 (2010)
ResumenThe use of in situ amendments for chemical stabilization of inorganic pollutants requires some indication of the longevity and sustainability of their effects. The efficiency and residual effect of different amendments for chemical stabilization of trace elements was evaluated in a contaminated soil under field conditions, based on single or repeated applications. Three amendments, two organic (biosolids compost and leonardite) and one inorganic (sugarlime), were applied to a soil contaminated by the tailings dam spill at Aznalcóllar (S. Spain), together with an unamended control. Amendments were applied in 2002 and 2003 to replicated test plots. In 2005 each plot was halved: one half received further amendments in 2005 and 2006 (4 treatments, D4) and the other received no further treatment (2 treatments, D2). The efficacy of the different treatments was evaluated in surface (0–15 cm) and sub-surface (15–30 cm) soil horizons. Both organic amendments significantly increased pH and TOC contents of amended soils, accompanied by reduced trace element extractability (CaCl2 extraction). The inorganic amendment reduced extractable trace element pools and maintained alkaline conditions, but did not affect TOC. The need for repeated amendment applications to sustain these conditions depended on the type of amendment. Two consecutive applications, D2, of the inorganic amendment showed sustained efficacy. Both organic amendments required repeated applications for full effectiveness. These results demonstrate that there are clear differences in the potential long-term sustainability of in situ amendments in field conditions and that treated soils require an effective monitoring programme as part of any post-treatment management.
Versión del editorhttp://dx.doi.org/10.1016/j.ibiod.2010.05.009
URIhttp://hdl.handle.net/10261/28764
DOI10.1016/j.ibiod.2010.05.009
ISSN0964-8305
Aparece en las colecciones: (IRNAS) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.