Catalytic Oxidation of Methylene Blue by Use of Natural Zeolite-Based Silver and Magnetite Nanocomposites

Aldiyar Kuntubek; Nurassyl Kinayat; Kulyash Meiramkulova; Stavros G. Poulopoulos; Joseph C. Bear; Vassilis J. Inglezakis

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2020.0624

Published Article

LAPSE:2020.0624

Catalytic Oxidation of Methylene Blue by Use of Natural Zeolite-Based Silver and Magnetite Nanocomposites

Aldiyar Kuntubek, Nurassyl Kinayat, Kulyash Meiramkulova, Stavros G. Poulopoulos, Joseph C. Bear, Vassilis J. Inglezakis

June 23, 2020

This work reports the synthesis of natural zeolite-based silver and magnetite nanocomposites and their application for the catalytic oxidation of methylene blue in water. The zeolite was impregnated with 5.5 wt.% Fe in the form of magnetite nanoparticles with size of 32 nm, and with 6.4 wt.% Ag in the form of silver oxide and metallic silver nanoparticles with sizes of 42 and 20 nm, respectively. The results showed that physical adsorption contributed to the removal of methylene blue by 25−36% and that Fe3O4@NZU is superior to Ag2O@NZU and Ag0@NZU, leading to 55% removal without oxidant and 97% in the presence of H2O2. However, there is no evidence of significant mineralization of methylene blue. The application of reaction rate models showed that the reaction order changes from zero to first and second order depending on the H2O2 concentration.

Record ID

LAPSE:2020.0624

Keywords

clinoptilolite, magnetite, methylene blue, nanoparticles, oxidation, silver, silver oxide, zeolites

Subject

Reaction Engineering

Suggested Citation

Kuntubek A, Kinayat N, Meiramkulova K, Poulopoulos SG, Bear JC, Inglezakis VJ. Catalytic Oxidation of Methylene Blue by Use of Natural Zeolite-Based Silver and Magnetite Nanocomposites. (2020). LAPSE:2020.0624

Author Affiliations

Kuntubek A: Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Nur-Sultan 020000, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbay
Kinayat N: Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Nur-Sultan 020000, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbay
Meiramkulova K: Department of Environmental Engineering & Management, L.N.Gumilyov Eurasian National University, Nur-Sultan 02000, Kazakhstan
Poulopoulos SG: Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Nur-Sultan 020000, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbay
Bear JC: School of Life Science, Pharmacy & Chemistry, Kingston University, Penrhyn Road, London KT1 2EE, UK
Inglezakis VJ: Environmental Science & Technology Group (ESTg), Department of Chemical & Materials Engineering, School of Engineering & Digital Sciences, Nazarbayev University, Nur-Sultan 020000, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbay [ORCID]

Journal Name

Processes

Volume

8

Issue

4

Article Number

E471

Year

2020

Publication Date

2020-04-16