Fe-Mn Bi-metallic Oxides Loaded on Granular Activated Carbon to Enhance Dye Removal by Catalytic Ozonation

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2016 Jun 19

PMID 27316651

Citations 7

Authors

Shoufeng Tang

Deling Yuan

Yameng Liu

Qi Zhang

Zhengquan Liu

Haiming Huang

Affiliations

Soon will be listed here.

Abstract

A Fe-Mn bi-metallic oxide supported on granular activated carbon (Fe-Mn GAC) has been fabricated by an impregnation-desiccation method and tested in the catalytic ozonation of methyl orange (MO) degradation and mineralization. X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy characterizations revealed that Fe-Mn oxides were successfully loaded and uniformly distributed on the GAC, and nitrogen adsorption isotherms showed that the supported GAC retained a large surface area and a high pore volume compared with the pristine GAC. The catalytic activity was systematically assessed by monitoring the MO removal efficiencies at different operational parameters, such as catalyst dosage, initial solution pH, and ozone flow rate. The Fe-Mn GAC exhibited better catalytic activity relative to ozone alone and GAC alone, improving the TOC removal by 24.5 and 11.5 % and COD removal by 13.6 and 7.3 %, respectively. The reusability of the hybrid was examined over five consecutive cyclic treatments. The Fe-Mn GAC catalytic activity was only a slight loss in the cycles, showing good stability. The addition of Na2CO3 as hydroxyl radicals (•OH) scavengers proved that the catalytic ozonation mechanism was the enhanced generation of •OH by the Fe-Mn GAC. The above results render the Fe-Mn GAC an industrially promising candidate for catalytic ozonation of dye contaminant removal.

Citing Articles

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A Novel Metal-Containing Mesoporous Silica Composite for the Decolorization of Rhodamine B: Effect of Metal Content on Structure and Performance.

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Zinc-iron silicate for heterogeneous catalytic ozonation of acrylic acid: efficiency and mechanism.

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Ozonation catalyzed by iron- and/or manganese-supported granular activated carbons for the treatment of phenol.

Xiong W, Chen N, Feng C, Liu Y, Ma N, Deng J Environ Sci Pollut Res Int. 2019; 26(20):21022-21033.

PMID: 31119544 DOI: 10.1007/s11356-019-05304-w.

Kinetic Evaluation of Dye Decolorization by Fenton Processes in the Presence of 3-Hydroxyanthranilic Acid.

Santana C, Ramos M, Vieira Velloso C, Aguiar A Int J Environ Res Public Health. 2019; 16(9).

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