title: Influence of enhancing electrolytes on the removal efficiency of heavy metals from Gabes marine sediments (Tunisia).
abstract: This study focused on the feasibility of the treatment of heavy metals-contaminated sediments from Gabes harbor (Tunisia) using enhanced electrokinetic process. It presented a laboratory short-time electrokinetic experiment. The enhancing agents, as citric, acetic acids and sodium dodecyl sulfate (SDS) were used regarding their low environmental hazard. The electrokinetic cell was specially designed in order to elaborate two experiments at the same time. This paper is composed of three parts. The first part introduces the characterization of Gabes sediments. The second part describes the design of laboratory electrokinetic cell and the followed methods. The third part is dedicated to the results analysis. Treatment efficiency revealed that more than 80% of lead was removed from Gabes marine sediments. The reduction of cooper concentration, in sediments after treatment, ranged from 74 to 87%. Despite, the high removal of cadmium that ranged from 58 to 79%, treated sediments presented Cd concentration above the threshold limit.
authors.affiliation: Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, LR14ES03-Ingénierie Géotechnique, BP 37 Le Belvédère, 1002 Tunis, Tunisia; Ecole Centrale de Lille, Villeneuve d'Ascq, France.
authors.forename: Amel
authors.initials: A
authors.lastname: Missaoui
authors.affiliation: Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, LR14ES03-Ingénierie Géotechnique, BP 37 Le Belvédère, 1002 Tunis, Tunisia.
authors.forename: Imen
authors.initials: I
authors.lastname: Said
authors.affiliation: Ecole Centrale de Lille, Villeneuve d'Ascq, France. Electronic address: zoubeir.lafhaj@ec-lille.fr.
authors.forename: Zoubeir
authors.initials: Z
authors.lastname: Lafhaj
authors.affiliation: Université de Tunis El Manar, Ecole Nationale d'Ingénieurs de Tunis, LR14ES03-Ingénierie Géotechnique, BP 37 Le Belvédère, 1002 Tunis, Tunisia.
authors.forename: Essaieb
authors.initials: E
authors.lastname: Hamdi
mesh_terms: D002104:Cadmium / Q000032:analysis; D055664:Electrochemical Techniques / Q000379:methods*; D004573:Electrolytes; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis*; D014416:Tunisia; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004573:Electrolytes; D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002104:Cadmium
keywords: Electrokinetic remediation; Enhancing electrolytes; Heavy metals; Marine sediments