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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 28, 2014
Accepted January 4, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Heterogeneous Fenton degradation of Orange II by immobilization of Fe3O4 nanoparticles onto Al-Fe pillared bentonite

Wenbing Li^{1 2†} Dong Wan^{1 3†} Guanghua Wang^{1 2} Kun Chen^{1 3} Qin Hu^{1 3} Lulu Lu^{1 3}

¹College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China ²Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan 430081, China ³, China

liwenbing@126.com

Korean Journal of Chemical Engineering, May 2016, 33(5), 1557-1564(8), 10.1007/s11814-016-0005-x

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Abstract

A novel catalyst, Fe3O4 nanoparticle decorated Al-Fe pillared bentonite (Fe3O4/Al-Fe-P-B), was prepared by in situ precipitation oxidization method. The catalyst was characterized by SEM, XRD and Raman spectroscopy. The Fe3O4 nanoparticles mainly exist on the surface or enter into the pore of bentonite, with better dispersing and less coaggregation. The catalytic activity of Fe3O4/Al-Fe-P-B was investigated in the degradation of Orange II (OII) by heterogeneous Fenton-like process. The effects of initial concentration of hydrogen peroxide, catalyst loading, temperature and initial pH on the degradation of OII were investigated. The Fe3O4/Al-Fe-P-B showed higher degradation efficiency of OII than bare Fe3O4 or Al-Fe-P-B in the degradation experiment. The enhanced catalytic activity of Fe3O4/Al-Fe-P-B in heterogeneous Fenton system was due to the synergistic effect between Al-Fe-P-B and Fe3O4. The novel catalyst can achieve solid-liquid separation easily by sample magnetic separation and has a good reusability and stability.

Keywords

Magnetic Bentonite Heterogeneous Catalyst Degradation Orange II Magnetic Separation

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