Thèse soutenue

Effet d’un traitement électrocinétique sur le comportement d’un mélange de kaolinite et de carbonate en présence de plomb

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Auteur / Autrice : Abdelkader Ben Hassine
Direction : Philippe DubujetMalika Trabelsi-Ayadi
Type : Thèse de doctorat
Discipline(s) : Sciences et génie de l'environnement
Date : Soutenance en 2015
Etablissement(s) : Ecole nationale d'ingénieurs (Saint-Etienne ; 1961-....)

Résumé

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Soil remediation and the selection of appropriate methods for this application have attracted special interest in recent years. There are almost as many methods of remediation that type of pollution. Method of depollution by electrokinetic is one of these methods. It consists in applying an electric current and to thereby cause the migration of pollutants. The objective of this work is to study the behavior of kaolinite, a mixture of kaolinite and carbonate of lead under the effect of an electrokinetic treatment and to study the evolution of the structure kaolinite, and kaolinite-carbonate mixtures before and after the electrokinetic. For this study, the sample length was 20 cm. The applied electric field is equal to 1V / cm. Electrokinetic treatment trials are made equal to 48h, 72h, 96h, 120h, 168h, and 192h. Measurements are made during the tests, such as the pH of the anodic and cathodic reservoirs, the intensity of electric current, the potential difference of the sample and the electro-osmotic flow. The measurements performed after the tests are the pH, the conductivity as a function ofthe distance from the anode. And measures by, X-ray diffraction, mercury porosimetry and surface area are also performed to study the evolution of the structure after the electrokinetic treatment