Assainissement du sol contaminé par des polluants organiques à l’aide de Tween 80 et de procédés d’oxydation avancés électrochimiques

Remediation of soil contaminated by organic pollutants using Tween 80 and electrochemical advanced oxidation processes

• Auteur / Autrice : Fuzhen Liu
• Direction : Mehmet Ali Oturan, Hui Zhang
• Type : Thèse de doctorat
• Discipline(s) : Sciences et Techniques de l'Environnement
• Date : Soutenance le 13/07/2020
• Etablissement(s) : Paris Est en cotutelle avec Université de Wuhan (Chine)
• Ecole(s) doctorale(s) : École doctorale Sciences, Ingénierie et Environnement (Champs-sur-Marne ; 2010-....)
• Partenaire(s) de recherche : Laboratoire : Laboratoire Géomatériaux et Environnement (Champs-sur-Marne) - Laboratoire Géomatériaux et Environnement
• Jury : Examinateurs / Examinatrices : Hui Zhang, Ignacio Sirés, Zhihui Ai, Nihal Oturan, Feng Wu
• Jury : Rapporteurs / Rapporteuses : Ignacio Sirés, Zhihui Ai
• DOI : 10.70675/f7c35aafz8ce4z43a5zb2e1z4bedb0685e03

Mots clés

Mots clés contrôlés

Composés aromatiques polycycliques

Oxydation électrochimique

Sols

Nettoyage

Mots clés libres

Lavage du sol

Tween 80

Hydrocarbures pétroliers

Hydrocarbures aromatiques polycycliques

Processus d’oxydation avancée électrochimique

Fluorescence de la matrice d’émission d’excitation

Soil washing

Tween 80

Petroleum-Hydrocarbons

Polycyclic aromatic hydrocarbons

Electrochemical advanced oxidation processes

Excitation emission matrix fluorescence

Résumé

Sous la direction du professeur Mehmet Oturan et du professeur Hui Zhang, j’ai fini toutes les parties des thèses. Un article a été publié dans SCI et les autres parties sont prêtes à se soumettre à la revue. Maintenant, je modifie les papiers et les thèses. Les difficultés sont la détection des contaminants parce qu’il a besoin de la machine de fluorescence et de la méthode d’extraction complexe

Soil contaminated by petroleum-hydrocarbons is a serious environmental problem since it is toxic to agriculture and human. And the polycyclic aromatic hydrocarbons (PAHs) in petroleum-hydrocarbons possess carcinogenicity, teratogenicity, mutagenicity, low volatility and poor solubility properties. Moreover, PAHs are persistent in soil and difficult to be degraded. Hence, effective methods are essential to remedy soil contaminated by petroleum-hydrocarbons and particularly the PAHs. Among various remediation methods, soil washing (SW) combined with surfactant is a promising techniques since it is an economical and effective approach. This technology promotes the transformation of contaminants from soil to aqueous solution, which is especially applied for heavily contaminated soil. However, a soil washing solution highly loaded with surfactant and contaminants is produced. Therefore, effective treatment of soil washing solution is a challenge for promoting the application of surfactants and the remediation of contaminated soil. The combination of soil washing process and electrochemical advanced oxidation processes (EAOPs) constitutes an effective technique for the treatment of soil washing solution. In this paper, Tween 80 was applied as surfactant during soil washing process. The lipophilic part of Tween 80 tends to contaminants or soil particles and the hydrophilic part has tendency to the aqueous phase. Thus, Tween 80 promotes the transformation of hydrophobic organic contaminants from soil to aqueous phase. Then the soil washing solution highly loaded with contaminants and surfactant was treated by EAOPs, processes based on the generation of strong oxidant species such as hydroxyl radicals (•OH), sulfate radicals (SO4•−) and active chlorine (•Cl), are one of the most efficient methods for degrading refractory organic pollutants in soil washing solution. The effect of EAOPs including electro-oxidation (EO), electro-Fenton (EF), sulfate radical-based advanced oxidation processes (AOPs) was investigated in the degradation of petroleum-hydrocarbons. Besides, a potential advanced oxidation process including the presence of chlorine s was applied for treating soil washing solution which contains polycyclic aromatic hydrocarbons (PAHs) and Tween 80.