Influence of transport parameters and chemical properties of the sediment in experiments to measure reactive transport in seawater intrusion

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/8835
Información del item - Informació de l'item - Item information
Title: Influence of transport parameters and chemical properties of the sediment in experiments to measure reactive transport in seawater intrusion
Authors: Boluda Botella, Nuria | Gomis Yagües, Vicente | Ruiz Beviá, Francisco
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Subject: Modelización Hidrogeoquímica | Modelos Hidrogeoquímicos | Modelización Ambiental
Studies: Ingeniería Geológica | Ingeniería Química
Code: 7551 | 57252 | 7366
Keywords: Seawater intrusion | Hydrochemistry | Column experiment | Transport parameters | Cation exchange | Gypsum
Knowledge Area: Ingeniería Química | Ciencias de la Tierra
Issue Date: 14-Apr-2008
Editors: Elsevier
Citation: BOLUDA BOTELLA, Nuria; GOMIS YAGÜES, Vicente; RUIZ BEVIÁ, Francisco. "Influence of transport parameters and chemical properties of the sediment in experiments to measure reactive transport in seawater intrusion". Journal of Hydrology. Vol. 357, Issues 1-2 (30 July 2008). ISSN 0022-1694, pp. 29-41
Abstract: A study of seawater intrusion under controlled laboratory conditions using multicomponent heterovalent chromatography is presented. The aim was to understand the influence of several variables on hydrogeochemical transport, especially on gypsum precipitation and cationic exchange. In addition, the study aimed to provide experimental data on how water composition changes during simulated seawater intrusion. The experimental results show that dispersion modifies the shape of the elution curves for the different solutes for processes such as cation exchange and precipitation-dissolution. The maxima and minima of these curves are very smooth, and entirely absent in several instances. Altering the cation exchange capacity of the sediment produced changes in the height of the calcium peak and in the maxima and minima of magnesium. In several experiments the high concentrations of calcium and sulfate during the first stages of the intrusion induced gypsum precipitation. The subsequent dissolution of the gypsum raised the concentration of sulfate higher than that in seawater. Saturation indices (SI) for gypsum in the samples collected were calculated with PHREEQC (version 2). Gypsum SI values are in agreement with experimental observations. Piper diagrams demonstrate that the experimental variables of transport parameters and cation exchange capacity (CEC) strongly influence the hydrochemistry of seawater intrusion. The experimental data deviate substantially from the theoretical freshwater-seawater mixing line, and the shape of the pathway between the end members depends on the experimental conditions. The experimental data obtained during column experiments and the physical and chemical parameters determined in each experiment can be used in the validation of multicomponent transport models. These hydrogeochemical models may aid in the interpretation of field data.
URI: http://hdl.handle.net/10045/8835
ISSN: 0022-1694
Language: eng
Tipe: info:eu-repo/semantics/article
Publisher version: http://dx.doi.org/10.1016/j.jhydrol.2008.04.021
Link to OCW-UA: http://ocw.ua.es/es/ingenieria-y-arquitectura/modelizacion-hidrogeoquimica-2009.html
Appears in Collections:Docencia - Ingeniería y Arquitectura - Proyectos / Trabajos
INV - CAIM - Artículos de Revistas
GITE - DIQUI - Proyectos / Trabajos
INV - Recursos Hídricos y Desarrollo Sostenible - Artículos de Revistas
INV - EQF - Artículos de Revistas

Files in This Item:


Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.