The synthesis of NdFeB magnetic activated carbon and its application in degradation of azo dye methyl orange by Fenton-like process

作者：Yang, Chunwei^*; Wang, Dong; Tang, Qian

来源：Journal of the Taiwan Institute of Chemical Engineers, 2014, 45(5): 2584-2589.

DOI：10.1016/j.jtice.2014.06.010

• NdFeB
• Magnetic activated carbon
• Heterogeneous Fenton-like process
• Azo dye
• Methyl orange

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.

• 出版日期2014-9
• 单位大连理工大学; 吉林师范大学