Nickel foam as a new material for chlortetracycline electrochemical oxidation Biodegradability improvement and biological treatment - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Electroanalytical Chemistry Année : 2020

Nickel foam as a new material for chlortetracycline electrochemical oxidation Biodegradability improvement and biological treatment

Résumé

Chlortetracycline CTC is an organochlorine compound released from industrial pharmaceutical waste. This pollutant had dangerous effects in aquatic organisms and human health, since it is responsible for inhibition of microbial activity and growth. In this study, the elimination of CTC from water is targeted. Biodegradability, based on the BOD5/COD ratio was studied, showing the non-feasibility of a direct biological treatment. Cyclic voltammetry analysis on a nickel electrode revealed a significant electrochemical activity of CTC. An electrochemical pre-treatment was therefore carried out in a percolation cell using a nickel foam as a working electrode at the potential of 0.5 V/SCE. The operating parameters were optimized. A degradation yield of 99% was achieved for an initial concentration of pollutant of 50 mg L−1 and a flow rate of 5 mL min−1 in alkaline conditions. After electrolysis, a total dechlorination of CTC was observed. The biodegradability ratio was improved, from 0.13 to 0.33 after electrolysis; while the dissolved organic carbon (DOC) analysis revealed that the level of mineralization remained low 27%. A 21 days biological treatment with activated sludge was then carried out, leading to an overall mineralization yield of 78%. © 2020

Domaines

Chimie
Fichier principal
Vignette du fichier
Saidi-2020-Nickel foam as a new material for chlortetracycline electrochemical oxidation biodegradability.pdf (871.25 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02932012 , version 1 (12-11-2020)

Identifiants

Citer

M. Saidi, Florence Fourcade, Nizar Bellakhal, A. Amrane, Florence Geneste. Nickel foam as a new material for chlortetracycline electrochemical oxidation Biodegradability improvement and biological treatment. Journal of Electroanalytical Chemistry, 2020, 878, pp.114543. ⟨10.1016/j.jelechem.2020.114543⟩. ⟨hal-02932012⟩
62 Consultations
78 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More