Removal of reactive brilliant red X-3B by a weak magnetic field enhanced Fenton-like system with zero-valent iron.
Removal of reactive brilliant red X-3B by a weak magnetic field enhanced Fenton-like system with zero-valent iron.
复制标题
弱磁场增强零价铁类芬顿体系去除活性艳红X-3B
作者：
研究了弱磁场对零价铁(ZVI)/H_2O_2去除活性艳红X-3B的影响。ZVI/H_2O_2/WMF系统对X-3B的最佳脱色条件为：pH=4.0时，X-3B用量为50 mg L−1，H_2O_2用量为8 mm，粒径为20μm的ZVI用量为0.5g L−_1，10分钟内X-3B的脱色率可达99.41%。叠加WMF使ZVI的工作pH从3.0提高到4.0。X-3B的ZVI/H_2O_2脱除动力学主要遵循零级速率规律。在本研究中，预磁化ZVI对X-3B的去除效果不如实时磁化，但优于ZVI/H_2O_2体系对X-3B的去除效果。ZVI/H_2O_2/WMF系统连续循环4次后仍具有去除X-3B的能力。WMF的使用提高了ZVI/H_2O_2对X-3B的去除效果，这主要是由于ZVI的腐蚀所致。在酸性条件下，WMF提高了ZVI的活性，从而促进了Fenton反应的效率。利用湿式微滤膜强化去除ZVI/H_2O_2 X-3B是一种有前景的环保工艺，因为它不需要额外的能量和昂贵的试剂，而且不会造成二次污染。研究了弱磁场对零价铁(ZVI)/H_2O_2去除活性艳红X-3B的影响。
The effect of a weak magnetic field (WMF) on the removal of reactive brilliant red X-3B (X-3B) by zero-valent iron (ZVI)/H2O2 was studied. The optimum conditions for the removal of X-3B by the ZVI/H2O2/WMF system were as follows: pH = 4.0, X-3B was 50 mg L−1, H2O2 was 8 mM, and ZVI with particle size of 20 μm was 0.5 g L−1. The X-3B decolorization rate could reach 99.41% in 10 minutes. The superposed WMF increased the working pH of ZVI from 3.0 to 4.0. The main part of ZVI/H2O2 removal kinetics of X-3B followed the zero order rate law. In this study, the removal effect of X-3B by pre-magnetization ZVI was not as good as that of real-time magnetization, but it was better than the removal of X-3B by the ZVI/H2O2 system. The ZVI/H2O2/WMF system still had the ability to remove X-3B after 4 consecutive cycles. The use of WMF improved the removal of X-3B by ZVI/H2O2 mainly due to the corrosion of ZVI. Under acidic conditions, WMF enhanced the activity of ZVI, which promoted the efficiency of the Fenton reaction. The use of WMF to enhance the ZVI/H2O2 removal X-3B was a promising and environmental friendly process because it did not require additional energy and expensive reagents and did not cause secondary pollution. The effect of a weak magnetic field (WMF) on the removal of reactive brilliant red X-3B (X-3B) by zero-valent iron (ZVI)/H2O2 was studied.
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影响因子：
4.6
作者：
Huang, Zhihui;Li, Yuzhen;Zhang, Yuxin
通讯作者：
Zhang, Yuxin
影响因子：
2.5
作者：
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通讯作者：
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影响因子：
15.1
作者：
Ghauch, Antoine;Baydoun, Habib;Dermesropian, Peter
通讯作者：
Dermesropian, Peter
DOI：
10.1016/j.colsurfa.2008.02.009
发表时间：
2008-06-05
影响因子：
5.2
作者：
Harendra, S.;Vipulanandan, C.
通讯作者：
Vipulanandan, C.
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影响因子：
11.4
作者：
Liang, Liping;Guan, Xiaohong;Tratnyek, Paul G.
通讯作者：
Tratnyek, Paul G.