Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4989454 | Separation and Purification Technology | 2018 | 9 Pages |
Abstract
This work evaluated water transport that occurs in a partially saturated soil of low hydraulic permeability when undergoing an electrokinetic remediation process. The soil used was a compacted kaolinite. To evaluate a wide range of possible conditions, soil with three different initial water contents (10, 15 and 20%) was used, obtaining a range of dry densities of 1300-1600 kg mâ3. The tests were performed using a lab-scale setup with a soil capacity of 675 cm3 and applying different electrical potential gradients (0.5, 1, 1.5 and 2 V cmâ1). The experimental results obtained were used to validate a conceptual model implemented in COMSOL. The validated model was used to conduct a detailed interpretation of the observed water transport processes and to perform a study of the hydraulic behaviour of the soil as a function of the initial conditions of compaction, water saturation and applied electrical potential gradient.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Á. Yustres, R. López-VizcaÃno, C. Sáez, P. Cañizares, M.A. Rodrigo, V. Navarro,