Comprehensive monitoring of the performance of homogenous and heterogeneous UV/H2O2/S2O8 2−/Fe2+ processes in mineralization of Acid Red 73

Comprehensive monitoring of the performance of homogenous and heterogeneous UV/H2O2/S2O8... Degradation of an azo dye, Acid Red 73 (AR73), was examined in detail using the UV/H2O2/S2O8 2−/Fe2+ process. UV–Vis absorbance, total organic carbon, H2O2 concentration, and pH of solution were monitored during the mineralization process. The results indicated that the mineralization efficiency was optimized from 78.8 to 95.6 % as a result of increasing the initial concentration of S2O8 2− from 0.923 to 3.70 mM. The capability of this process was compared with those of UV/H2O2, UV/H2O2/Fe2+, and UV/H2O2/S2O8 2− processes. The UV/H2O2/S2O8 2−/Fe2+ process was more effective than other processes in degradation of AR73. Moreover, Fe2+ was immobilized on the surface of zeolite (ZSM5), and its immobilization effect was examined. Mineralization efficiency in the Fe2+ catalyzed process was higher than that of the Fe2+–ZSM5 catalyzed process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Comprehensive monitoring of the performance of homogenous and heterogeneous UV/H2O2/S2O8 2−/Fe2+ processes in mineralization of Acid Red 73

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Publisher
Springer Netherlands
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2042-1
Publisher site
See Article on Publisher Site

Abstract

Degradation of an azo dye, Acid Red 73 (AR73), was examined in detail using the UV/H2O2/S2O8 2−/Fe2+ process. UV–Vis absorbance, total organic carbon, H2O2 concentration, and pH of solution were monitored during the mineralization process. The results indicated that the mineralization efficiency was optimized from 78.8 to 95.6 % as a result of increasing the initial concentration of S2O8 2− from 0.923 to 3.70 mM. The capability of this process was compared with those of UV/H2O2, UV/H2O2/Fe2+, and UV/H2O2/S2O8 2− processes. The UV/H2O2/S2O8 2−/Fe2+ process was more effective than other processes in degradation of AR73. Moreover, Fe2+ was immobilized on the surface of zeolite (ZSM5), and its immobilization effect was examined. Mineralization efficiency in the Fe2+ catalyzed process was higher than that of the Fe2+–ZSM5 catalyzed process.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Apr 17, 2015

References

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