English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18193
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Transport of Cd, Cu and Pb in an acid soil amended with phosphogypsum, sugar foam and phosphoric rock

AutorCampbell, C. G.; Garrido, Fernando ; Illera Muñoz, Virginia; García-González, M.T.
Palabras claveCd
Cu
Pb
Phosporic rock
Phosphogymsum
Fecha de publicación2006
EditorElsevier
CitaciónApplied Geochemistry 21: 1030-1043 (2006)
ResumenMetal pollution in soils is a world-wide problem requiring new tools for environmental management. This study investigated the transport processes of metals (Cd, Cu and Pb) in undisturbed soil columns of an acid soil amended with phosphogypsum, sugar foam, and phosphoric rock (PG, SF and PR). Sorption mechanisms have been examined in a companion paper using sequential extraction methods. This investigation focused on how these sorption mechanisms relate to transport parameters estimated from metal breakthrough curves using temporal moment analysis. The application of the 3 soil amendments significantly reduced the total metal mass leached from all the columns. Metal travel times were also longer with the addition of the amendments, although retardation values were much lower than those reported in batch studies. Retardation (R) values for Cd, Cu and Pb averaged 1.6, 1.8 and 1.7, respectively, for all treated columns. These R values for the control columns were 1.2, 1.3 and 1.4 for Cd, Cu and Pb, respectively. Additional observations of Al, Ca and SO2 4 leaching from the columns revealed the existence of fast exchange and precipitation–dissolution reactions included in the transport of metals through the soil. Under the conditions of this study, it is estimated that the mass of Cd, Cu and Pb leached from the soil would be reduced by more than 60–99% with the addition of the amendments. Therefore, all 3 amendments (PG, SF, and PR) appear to have reasonable potential to be applied to reduce metal leaching in polluted agricultural soils.
Descripción14 pages, and figures, and tables statistics
Versión del editorhttp://dx.doi.org/10.1016/j.apgeochem.2006.02.023
URIhttp://hdl.handle.net/10261/18193
DOI10.1016/j.apgeochem.2006.02.023
ISSN0883-2927
Aparece en las colecciones: (ICA) 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.