期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 45, 期 5, 页码 2584-2589出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2014.06.010
关键词
NdFeB; Magnetic activated carbon; Heterogeneous Fenton-like process; Azo dye; Methyl orange
资金
- Key Laboratory of Industrial Ecology and Environmental Engineering, China Ministry of Education [KLIEEE-13-07]
- Jilin province natural science foundation project [20140101215JC]
In this paper, the magnetic NdFeB-activated carbon Fenton catalyst (NdFeB-AC-FC) was synthesized by negative pressure impregnation method. The results of magnetite susceptibility measurement show that the NdFeB-AC-FC had hard magnetic properties. Its saturated magnetization, remanent magnetism and coercive force were 18.11 emu/g, 5.7 emu/g, and 905 Oe, respectively. The surface morphology and elementary composition test results show that the specific area and Fe content of NdFeB-AC-FC have been significantly improved by negative pressure impregnation treatment. The feasibility of the NdFeB-AC-FC as catalyst in heterogeneous Fenton-like process has been studied by degrading the simulated dye wastewater. The results show that the NdFeB-AC-FC not only had splendid catalytic activity, but also had reused feasibility in heterogeneous Fenton-like process. Under the optimum conditions ([methyl orange (MO)](0):, = 20 mg/L, temperature = 20 degrees C, [NdFeB-AC-FC](0) = 10 g/L, [H2O2](0) = 0.6 mmol/L and pH = 3.0), MO degradation ratio also could reach 97.1% after 5 cycles. In addition, the results of kinetics study show that the catalytic degradation process follows the pseudo-first order kinetics model. In a word, the catalyst has a good application prospect and it could provide a new technique to solve organic industrial wastewater pollution. (C) 2014 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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