The comparative study on the rapid decolorization of azo, anthraquinone and triphenylmethane dyes by zero-valent iron
The comparative study on the rapid decolorization of azo, anthraquinone and triphenylmethane dyes by zero-valent iron
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零价铁快速脱色偶氮、蒽醌和三苯甲烷染料的比较研究
DOI：
10.1016/j.cej.2011.05.107
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发表时间：
2012
影响因子：
15.1
通讯作者：
Wang Shu-Ying
中科院分区：
文献类型：
--
作者：
He Yang;Gao Jing-Feng;Feng Fang-Qing;Liu Cheng;Peng Yong-Zhen;Wang Shu-Ying
The comparative study was carried out for the decolorization of three kinds of dyes: azo dye, Reactive Brilliant Red K-2G (RBR); anthraquinone dye, Reactive Brilliant Blue KN-R (RBB); and triphenylmethane dye, Malachite Green (MG) from aqueous solution by zero-valent iron (ZVI) as an effective reductant. ZVI was synthesized with a modified method of reduction in liquid phase, in which the macromolecule stabilizer polyvinylpyrrolidone was added. The effects of solution pH, ZVI dosage and initial dye concentration on the decolorization were investigated. The results showed that pH value had little effect on dye decolorization. With increasing dosage of ZVI, decolorization efficiency increased, but reduction capacity and reaction time showed descending trends. High decolorization efficiency (95.74–99.22%) was achieved within 2min for 698.24mg/L for RBR, 10min for 691.69mg/L for RBB and 30min for 686.10mg/L for MG at optimal pH. The first-order kinetic model was found to fit the experimental data well. The UV–vis spectra and FTIR spectra analysis indicated that chromophores of dyes were destroyed and some functional groups such as amino and aromatic ring were transformed in the decolorization process. ZVI was proved to be a universal and efficient reductant for rapid decolorization of the three dyes.
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影响因子：
11.4
作者：
Jingfeng Gao;Qian Zhang;Kai Su;Jin-hui Wang
通讯作者：
Jingfeng Gao;Qian Zhang;Kai Su;Jin-hui Wang
影响因子：
9.8
作者：
Cundy, Andrew B.;Hopkinson, Laurence;Whitby, Raymond L. D.
通讯作者：
Whitby, Raymond L. D.
影响因子：
13.6
作者：
Fan, Jing;Guo, Yanhui;Fan, Maohong
通讯作者：
Fan, Maohong
影响因子：
13.6
作者：
Epolito, William J.;Yang, Hanbae;Pavlostathis, Spyros G.
通讯作者：
Pavlostathis, Spyros G.
影响因子：
13.6
作者：
Chen, Chih-Yu;Kuo, Jong-Tar;Chung, Ying-Chien
通讯作者：
Chung, Ying-Chien