Photo-activation of persulfate and hydrogen peroxide by humic acid coated magnetic particles for Bisphenol A degradation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Catalysis Today Année : 2021

Photo-activation of persulfate and hydrogen peroxide by humic acid coated magnetic particles for Bisphenol A degradation

Résumé

Magnetic particles (MPs) coated with humic acid (HA) prepared under anoxic atmosphere were tested as heterogeneous photo-Fenton catalyst for the activation of hydrogen peroxide (H 2 O 2) and persulfate (S 2 O 8 2−) using Bisphenol A (BPA) as a model pollutant. The role of HA coating, pH value and H 2 O 2 /S 2 O 8 2− concentration were investigated. A positive contribution of HA coating on H 2 O 2 and S 2 O 8 2− activation was found. The highest BPA degradation rates were achieved at acidic conditions (pH 3) with both H 2 O 2 and S 2 O 8 2− , however persulfate showed a significant efficiency even at pH 6, interesting feature in the light of decreasing the wastewater treatment costs. By the addition of selective quenching agents, % OH and SO 4 %-were identified as the main reactive species involved in the BPA abatement. An important contribution of the S 2 O 8 2− photolysis on the overall BPA transformation was highlighted. The reuse of the catalyst was investigated and similar efficiency using H 2 O 2 and S 2 O 8 2− activation was observed until the third catalytic cycle. Experiments carried out using real wastewater samples, showed a good, even if less efficient compared to pure water, BPA removal.

Domaines

Chimie
Fichier principal
Vignette du fichier
Nuno Goncalves Catalysis Today 2019.pdf (1.06 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02470307 , version 1 (17-11-2020)

Identifiants

Citer

Nuno P.F Gonçalves, Marco Minella, Gilles Mailhot, Marcello Brigante, Alessandra Bianco Prevot. Photo-activation of persulfate and hydrogen peroxide by humic acid coated magnetic particles for Bisphenol A degradation. Catalysis Today, 2021, 361, pp.43-49. ⟨10.1016/j.cattod.2019.12.028⟩. ⟨hal-02470307⟩
57 Consultations
78 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More