5 documents found, page 1 of 1
Bimetallic-zeolite nanomaterials as catalysts for degradation of azorubine dye ...
Mrabet, Imane El; Santos, Bebiana L. C.; Tanji, Karim; Rombi, Elisabetta; Parpot, Pier; Fonseca, A. M.; Zaitan, Hicham; Neves, Isabel C.Solutions containing equal concentrations of each metal ion pair (Zn/Fe, Co/Fe, Ni/Fe) were simultaneously added to the zeolite NaY using the ion-exchange method. The resulting bimetallic-zeolites were used as heterogeneous catalysts for the Fenton-like reaction for azorubine dye degradation. The optimization of the reaction parameters was assessed using the Box-Behnken design by studying the influence of H2O2 ...
Raw clays from Morocco for degradation of pollutants by Fenton-like reaction fo...
Assila, Ouissal; Bencheqroun, Zineb; Rombi, Elisabetta; Valente, Teresa Maria Fernandes; Braga, Amália S.; Zaitan, Hicham; Kherbeche, AbdelhakThree raw clays from Morocco were used as heterogeneous catalysts for Fenton-like oxidation of organic pollutants in water. The selected pollutants were two dyes used in the textile industry, Congo Red (CR) and Tartrazine (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 ...
Fe(III)-exchanged zeolites as efficient electrocatalysts for Fenton-like oxidat...
Bencheqroun, Zineb; Sahin, Nihat E.; Soares, Olívia S. G. P.; Pereira, Manuel F. R.; Zaitan, Hicham; Nawdali, Mustapha; Rombi, ElisabettaElectrochemical oxidation, a powerful tool for the conversion of several of organic dye compounds using metal-exchanged zeolite modified electrodes, has shown great potential due to its capability of high efficiency degradation, a global priority for a sustainable environment. In this study, the role of the Fe(III)-exchanged-zeolite-modified electrodes using two different zeolite structures (such as FAU (Y) and...
Removal of basic and acid dyes from aqueous solutions using cone powder from Mo...
Bencheqroun, Zineb; El Mrabet, Imane; Kachabi, Mohammed; Nawdali, Mostafa; Valdes, Hector; Neves, Isabel C.; Zaitan, HichamThis study aims to evaluate the technical feasibility of applying a low-cost alternative natural bioadsorbent obtained from the cone of the Moroccan cypress Cupressus sempervirens to remove dyes from contaminated waters. Methylene Blue (MB) and Congo Red (CR) dyes are used to represent basic and acid compounds present in wastewater of textile industries. The cone of this medium-sized coniferous evergreen tree w...
Removal of basic dyes from aqueous solutions by adsorption onto Moroccan clay (...
Bencheqroun, Zineb; El Mrabet, Imane; Kachabi, Mohammed; Nawdali, Mostafa; Neves, Isabel C.; Zaitan, HichamThe main objective of this study was to investigate the potential of natural clay obtained (from Fez city, Morocco) as an adsorbent for the removal of basic dyes (Astrazon Blue BG and Astrazon Yellow 7GLL) from liquid effluents. Natural clay was characterised using different physical-chemical methods, including nitrogen adsorption-desorption isotherms, X-ray diffraction (XRD), scanning electron microscopy (SEM)...