Electrokinetic restoration of local saline soil

Publication date: Available online 22 August 2019Source: Materials Today: ProceedingsAuthor(s): Faiza Klouche, Karim Bendani, Ahmed Benamar, Hanifi Missoum, Mustapha Maliki, Nadia LaredjAbstractElectrokinetics is a development technology used for the removal and extraction of contaminants, such as: heavy metals, radionuclides and organic contaminants from fine-grained and low-permeability soils. The goal of electrokinetic remediation is to perform the migration of contaminants under the application of an electric field imposed on two electrodes inserted into a mass of soil. Three phenomena can occur when the soil is electrically charged, which are electro-osmosis, electromigration and electrophoresis.In this paper, an experimental investigation was conducted to study the effect of electrokinetic treatment on the mobility, extraction and transfer of ionic species in a saline soil collected from Ain Nouissy town near Mostaganem city in Algeria. The soil under consideration is a silty clay with a moderate plasticity. A series of electrokinetic tests was carried out on an experimental cell developed at the LCTPE laboratory (University of Mostaganem-Algeria), where electric current, effluent flow, pH and water content were measured along the sample at different applied voltages. The results obtained during the tests have shown that the electro-osmotic flow increases and the electric current decreases during the treatment, while a significant reduction in the water content is clear...
Source: Materials Today: Proceedings - Category: Materials Science Source Type: research