Removal of pesticide chlorobenzene by anodic degradation: Variable effects and mechanism

Amel Ouni; Nejmeddine Rabaaoui; Lassaad Mechi; Nasreddine Enaceur; Abdulmohsen K.D. AlSukaibi; Eid M. Azzam; Khalaf M. Alenezi; Younes Moussaoui

Journal of Saudi Chemical Society (Oct 2021)

Removal of pesticide chlorobenzene by anodic degradation: Variable effects and mechanism

Amel Ouni,
Nejmeddine Rabaaoui,
Lassaad Mechi,
Nasreddine Enaceur,
Abdulmohsen K.D. AlSukaibi,
Eid M. Azzam,
Khalaf M. Alenezi,
Younes Moussaoui

Affiliations

Amel Ouni: Laboratory for the Application of Materials to the Environment, Water and Energy (LR21ES15), Faculty of Sciences of Gafsa, University of Gafsa, Tunisia; Faculty of Sciences of Gafsa, University of Gafsa, Tunisia
Nejmeddine Rabaaoui: Laboratory for the Application of Materials to the Environment, Water and Energy (LR21ES15), Faculty of Sciences of Gafsa, University of Gafsa, Tunisia
Lassaad Mechi: Department of Chemistry, College of Science, University of Ha’il, 81451 Hail, P.O. Box 2440, Saudi Arabia
Nasreddine Enaceur: Laboratory for the Application of Materials to the Environment, Water and Energy (LR21ES15), Faculty of Sciences of Gafsa, University of Gafsa, Tunisia; Faculty of Sciences of Gafsa, University of Gafsa, Tunisia
Abdulmohsen K.D. AlSukaibi: Department of Chemistry, College of Science, University of Ha’il, 81451 Hail, P.O. Box 2440, Saudi Arabia
Eid M. Azzam: Department of Chemistry, College of Science, University of Ha’il, 81451 Hail, P.O. Box 2440, Saudi Arabia
Khalaf M. Alenezi: Department of Chemistry, College of Science, University of Ha’il, 81451 Hail, P.O. Box 2440, Saudi Arabia
Younes Moussaoui: Faculty of Sciences of Gafsa, University of Gafsa, Tunisia; Organic Chemistry Laboratory (LR17ES08), Faculty of Sciences of Sfax, University of Sfax, Tunisia; Corresponding author at: Faculty of Sciences of Gafsa, University of Gafsa, 2112 Gafsa, Tunisia.

Journal volume & issue: Vol. 25, no. 10
p. 101326

Abstract

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The oxidation of chlorobenzene (CB) was studied by electrochemical electrolysis using boron-doped diamond (BDD), PbO2 or platine (Pt) as anode and graphite bar as cathode. The effect of applied current density, supporting electrolyte and initial pH value were also studied. The results demonstrated that BDD anode had the best effectiveness and accomplishment of electrochemical degradation of CB compared to PbO2 and Pt anodes. For a current density of 20 mA/cm2 and at pH = 3, the elimination of COD and TOC were about 97% and 98%, respectively, after 360 min of electrolysis with the BDD anode. Pseudo-first order kinetics appears to be the most appropriate to describe the degradation of chlorobenzene. The electrochemical mechanism of chlorobenzene on BDD was proposed based on the identified intermediates.

Published in Journal of Saudi Chemical Society

ISSN: 1319-6103 (Print)
Publisher: Elsevier
Country of publisher: Saudi Arabia
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/journal-of-saudi-chemical-society/

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