Removal of cyanide in aqueous solution by oxidation with hydrogen peroxide catalyzed by copper oxide-Reference-Cited by-同舟云学术

Removal of cyanide in aqueous solution by oxidation with hydrogen peroxide catalyzed by copper oxide

Published:2019-07-01 Issue:1 Volume:80 Page:126-133
ISSN:0273-1223
Container-title:Water Science and Technology
language:en
Short-container-title:

Author:

Amaouche Hamza¹,Chergui Salima¹,Halet Farid¹²,Yeddou Ahmed Réda¹,Chergui Abdelmalek¹³,Nadjemi Boubekeur¹,Ould-Dris Aïssa⁴

Affiliation:

1. Laboratoire d'Etude et de Développement des Techniques de Traitement et d'Epuration des Eaux et de Gestion Environnementale – LEDTEGE, Ecole Normale Supérieure Kouba, BP 92 Vieux Kouba 16050, Algiers, Algeria

2. Université M'hamed Bougara de Boumerdes, Avenue de l'indépendance Boumerdes 35000, Algeria

3. Ecole Nationale Polytechnique d'Alger, 10 rue Hassen Badi El Harrach, Algiers, Algeria

4. Laboratoire de Transformations Intégrées de la Matière Renouvelable, EA 4297, Université de Technologie de Compiègne, Centre de Recherche de Royallieu, BP 20529, 60200 Compiegne Cedex, France

Abstract

Abstract This work is dedicated to the removal of free cyanide from aqueous solution through oxidation with hydrogen peroxide H2O2 catalyzed by copper oxide nanoparticles. Effects of initial molar ratio [H2O2]0/[CN−]0, catalyst dose, temperature, pH and the catalyst stability on cyanide removal have been investigated. The use of copper oxide has improved the reaction rate showing catalytic activity. The cyanide removal efficiency was increased from 60% to 94% by increasing in the dose of catalyst from 0.5 g/L to 5.0 g/L. Increasing the temperature from 20 °C to 35 °C promotes cyanide removal and the four successive times re-use of catalyst shows good stability. Kinetics of cyanide removal was found to be of pseudo-first-order with respect to cyanide. The rate constants have been determined.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

Link

http://iwaponline.com/wst/article-pdf/80/1/126/619140/wst080010126.pdf

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