Raw clays from Morocco for degradation of pollutants by Fenton-like reaction for water treatment

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Assila, O (Autor) FEUP; Bencheqroun, Z (Autor) Outra; Rombi, E (Autor) Outra; Valente, T (Autor) Outra; Braga, AS (Autor) Outra; Zaitan, H (Autor) Outra; Kherbeche, A (Autor) Outra; O.S.G.P. Soares (Autor) FEUP; Manuel Fernando R Pereira (Autor) FEUP; Fonseca, AM (Autor) Outra; Parpot, P (Autor) Outra; Neves, IC (Autor) Outra

Revista

Título: Colloids and Surfaces A: Physicochemical and Engineering Aspects

Vol. 679

ISSN: 0927-7757

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Projetos Associados

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Outras Informações

ID Authenticus: P-00Z-A9K

DOI: 10.1016/j.colsurfa.2023.132630

Abstract (EN): Three raw clays from Morocco were used as heterogeneous catalysts for Fenton-like oxidation of organic pol-lutants in water. The selected pollutants were two dyes used in the textile industry, Congo Red (CR) and Tar-trazine (Tar, known also as a food coloring compound, E102) and Caffeine (Caf), a stimulant drug present in popular beverages such as coffee and tea, commonly used in Morocco. Two different processes were used for their degradation: (i) Fenton-like reaction; and (ii) electro-Fenton-like reaction. Process (i) was used for Tar and Caf degradation in the presence of clays from different region of Morocco (Middle Atlas -ClayMA, Fez -ClayF, and Ourika -ClayO), the best results being obtained with ClayO and ClayMA, on which 60.0% and 23.4% of conversion and 41.0% and 20.5% of mineralization were achieved for Tar and Caf, respectively. Process (ii) was used for degrading CR by clay-modified electrodes (CME) using the rawclays from Fez and Ourika regions (ClayF and ClayO). The stability of the CME was assessed by cyclic voltammetry studies, which proved that they are stable in the experimental conditions used. The electrodegradation of CR dye, performed without hydrogen peroxide in the reaction medium, achieve 67.0% of mineralization at the end of electrolysis (2 h).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12