Gypsum precipitation/dissolution as an explanation of the decrease of sulphate concentration during seawater intrusion
Por favor, use este identificador para citar o enlazar este ítem:
http://hdl.handle.net/10045/2120
Título: | Gypsum precipitation/dissolution as an explanation of the decrease of sulphate concentration during seawater intrusion |
---|---|
Autor/es: | Gomis Yagües, Vicente | Boluda Botella, Nuria | Ruiz Beviá, Francisco |
Grupo/s de investigación o GITE: | Control de Calidad de Aguas. Estudio de la Intrusión Marina |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Química |
Palabras clave: | Gypsum | Seawater intrusion | Sulphate | Hydrogeochemistry |
Área/s de conocimiento: | Ingeniería Química |
Fecha de publicación: | 21-feb-2000 |
Editor: | Elsevier |
Cita bibliográfica: | GOMIS YAGÜES, Vicente; BOLUDA BOTELLA, Nuria; RUIZ BEVIÁ, Francisco. "Gypsum precipitation/dissolution as an explanation of the decrease of sulphate concentration during seawater intrusion". Journal of Hydrology. Vol. 228, Issues 1-2 (Febr. 2000). ISSN 0022-1694, pp. 48-55 |
Resumen: | The precipitation of gypsum during the intrusion of seawater in a coastal aquifer is shown to be a possible cause of the decrease of the sulphate concentration with respect to the conservative freshwater / seawater mixing observed in many field studies. Results of previously published laboratory column experiments and the application of a multicomponent reactive transport model show that gypsum precipitates during the first stages of seawater intrusion, causing a decrease in sulphate concentration. As the resultant front advances, the water becomes undersaturated with respect to gypsum when the content of seawater <50%. At that point, water samples exhibit a deficit of sulphate of several mmol/L, in the range of the field values reported in papers on intrusion in coastal aquifers. Thus, in addition to bacterial sulphate reduction by organic matter, gypsum precipitation is a possible explanation for the non-conservative behaviour of sulphate during seawater intrusion. |
Patrocinador/es: | This work was supported by “Conselleria de Cultura, Educació i Ciencia de la Generalitat Valenciana” and “Diputación Provincial de Alicante”. |
URI: | http://hdl.handle.net/10045/2120 |
ISSN: | 0022-1694 |
DOI: | 10.1016/S0022-1694(99)00207-3 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/S0022-1694(99)00207-3 |
Enlace a OCW-UA: | http://ocw.ua.es/es/ingenieria-y-arquitectura/modelizacion-hidrogeoquimica-2009.html |
Aparece en las colecciones: | INV - CAIM - Artículos de Revistas INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas INV - EQF - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
---|---|---|---|---|
GYPSUM_SWINTRUSION.PDF | Versión final (acceso restringido) | 225,16 kB | Adobe PDF | Abrir Solicitar una copia |
Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.