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论文类型：会议论文

发表时间：2014-08-19

收录刊物：EI、CPCI-S、Scopus

卷号：675-677

页面范围：426-+

关键字：Magnetic actived carbon; Nd2Fe14B; heterogeneous Fenton; azo dyes; Congo red

摘要：Magnetic Nd2Fe14B activated carbon, a new kind of heterogeneous Fenton catalyst has been synthesis to treat the dyestuff wastewater. The obtained catalysts were characterized by X-raydiffraction (XRD) and vibrating sample magnetometer (VSM), and the catalytic activity in heterogeneous Fenton oxidation of Congo red was evaluated. Experiments show that the Nd2Fe14B activated carbon has hard magnetic properties. The saturated magnetization, remanence and coercive force were 15.93emu/g, 6.0emu/g, and 1313Oe, respectively. The results also indicated that Nd2Fe14B activated carbon has good performance on azo dye Congo red oxidation with heterogeneous Fenton process. Under the optimum conditions ([NdFeB-AC-FC](0)=20g/L, [H2O2](0)=8mmol/L and pH=7.0), Congo red degradation rate could reach 83.4%. The pH had few effects on heterogeneous Fenton process degraded Congo red. The kinetics studied shown that Congo red degraded followed the pseudo-first-order reaction by heterogeneous Fenton process.