Heterogeneous Fenton-like degradation of Rhodamine 6G in water using CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis

Journal of Hazardous Materials
M DükkanciR V Prihod'ko

Abstract

In this study, heterogeneous Fenton-like degradation of reactive azo dye Rhodamine 6G in water was investigated over a CuFeZSM-5 zeolite catalyst prepared by hydrothermal synthesis. At initial pH of 3.4, a color removal of 100% was achieved after a reaction time of 45 min. TOC elimination was measured to be 51.8% after 2 h of oxidation. Initial decolorization rate was described by an equation of -r(A0) = 4.56 x 10(2) e(-24.83/RT)C(R6G,0)C(0.35)(H2O2,0) where R is in kJ/mol. The leaching of iron and copper cations from zeolite structure into the solution during oxidation was dependent on pH strongly. The regulation of pH from 6.5 (dye solution pH) to 3.4, increased leaching for iron from 0.7 to 0.8 mg/dm3 and for copper from 1.4 to 2.1 mg/dm3. The copper was totally leached from the catalyst during the process at pH 3.4.

References

Jun 24, 2003·Ultrasonics Sonochemistry·G Tezcanli-Guyer, N H Ince
Oct 3, 2003·Water Research·Anabela M GuedesCarlos A Costa
Jun 19, 2007·Journal of Hazardous Materials·Suranjana Chaliha, Krishna Gopal Bhattacharyya

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Citations

Jan 23, 2013·Environmental Science and Pollution Research International·Puthiya Veetil NidheeshSrikrishnaperumal Thanga Ramesh
May 7, 2014·Environmental Science and Pollution Research International·A R LaijuP V Nidheesh
Jul 27, 2012·Journal of Hazardous Materials·Atheel Hassan AlwashNorli Ismail
Apr 24, 2014·Environmental Science and Pollution Research International·Nazlı DemirMeral Dükkancı
Dec 29, 2011·ACS Applied Materials & Interfaces·Gajendra Kumar PradhanK M Parida
Sep 20, 2016·Journal of Colloid and Interface Science·Xin SongChangsheng Zhao
Apr 10, 2019·Environmental Science and Pollution Research International·Jiahui XiongChangwei Hu
Dec 10, 2019·Environmental Science and Pollution Research International·Hongmei XieGuilin Zhou
Dec 15, 2020·Journal of Environmental Health Science & Engineering·Özge DönmezGönül Gündüz

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