Part 1. Production of a modified PAN fibrous catalyst and its optimisation towards the decomposition of hydrogen peroxide

Ishtchenko, V. V.; Huddersman, Katherine; Vitkovskaya, R. F.

doi:10.1016/s0926-860x(02)00511-2

Cited by 90 publications

(78 citation statements)

References 6 publications

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“…These drawbacks can be overcome by using heterogeneous Fenton-type catalysts, in particular, zeolites, whose recovery from water is not difficult. Iron and copper containing zeolites show redox properties because these metals can change their oxidation states [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Recently, high catalytic activity of iron containing zeolites for phenol oxidation [15,16] and for degradation of dyes [2,3] has been reported.…”

Section: Introductionmentioning

confidence: 99%

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

Dükkancı

Gündüz

Yılmaz

et al. 2010

Journal of Hazardous Materials

168

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a b s t r a c tIn 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 × 10 2 e −24.83/RT C R6G,0 C 0.35 H 2 O 2 ,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/dm 3 and for copper from 1.4 to 2.1 mg/dm 3 . The copper was totally leached from the catalyst during the process at pH 3.4.

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Section: Introductionmentioning

confidence: 99%

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

Dükkancı

Gündüz

Yılmaz

et al. 2010

Journal of Hazardous Materials

168

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show abstract

“…Therefore, numerous attempts have been done to find heterogeneous systems/supports for the Fe species, so that they can be effectively applied in wastewater treatment, e.g., see Refs. [10][11][12][13][14][15]. The major advantage of the use of heterogeneous catalytic materials is their easy recovery.…”

Section: The Use Of Pillared Clays In Heterogeneous Fenton-based Procmentioning

confidence: 99%

Use of Pillared Clay-Based Catalysts for Wastewater Treatment Through Fenton-Like Processes

Herney-Ramírez

Madeira

2010

Pillared Clays and Related Catalysts

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Clays, both natural and physical-chemically modified, are attractive materials for the preparation of supported catalysts. In this chapter, a review is made regarding the use of pillared interlayered clays (PILCs) in heterogeneous Fentonlike advanced oxidation processes. Their applications in pollutants degradation is summarized, with particular emphasis on the effect of the main operating conditions (e.g., initial H 2 O 2 or parent compound concentration, catalyst load, pH, or temperature) on oxidation efficiency. Special attention is also given to the type of catalyst or precursor used, to the importance and advantages of the heterogeneous versus homogeneous process, and to significant aspects like catalyst stability. Among the technological issues that are of concern, the importance of using continuous flow reactors (e.g., fixed-bed) is discussed. Finally, some mechanistic studies are reviewed as well as modeling works, based on phenomenological or semi-empiric models (e.g., using statistic tools like design of experiments).

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“…Preparation procedure of the catalyst, containing Fe 3+ cations is described in our previous papers [16,18]. Hydrogen peroxide of a known concentration was added into this solution before catalysis.…”

Section: Catalytic Oxidation Of Sb Effluent Under Static Conditionsmentioning

confidence: 99%

“…In the present study we evaluated the activity of a novel heterogeneous fibrous catalyst [16], based on Fenton's chemistry towards oxidation of silverbearing (SB) photographic processing effluents from KODAK. The ability of the catalyst to decompose the effluent was measured as the reduction in COD value with respect to that of the initial feed.…”

Section: Introductionmentioning

confidence: 99%

Advanced oxidation of photographic processing effluents on novel heterogeneous fibrous catalyst

Ishtchenko¹,

Huddersman²,

Yang³

2006

WIT Transactions on Ecology and the Environment, Vol 95

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A novel heterogeneous catalyst, based on Fenton's chemistry, was evaluated for the treatment of KODAK Silver Bearing (SB) photographic processing effluents with high Chemical Oxygen Demand (COD) value. The effect of temperature, the nature and concentration of the oxidant (air and/or hydrogen peroxide), the duration of catalytic treatment and the dilution factor of the effluent on the reduction in COD were investigated. The catalyst and bubbled air (with no hydrogen peroxide present) resulted in a significant COD reduction of the effluent of 56 % after 18 hours of treatment at room temperature. It was found that most of the COD reduction occurred within the first four hours of treatment. Using air on its own, as oxidant was found to be sufficient, with only a slight improvement on the addition of hydrogen peroxide. Ambient temperature was preferred for the catalytic treatment of the effluent, as an increase in temperature up to 60 0 C led to less COD reduction which may arise from a change in the redox potential of the active transition metal (Fe 3+ ) complex or to the formation of recalcitrant products.

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Part 1. Production of a modified PAN fibrous catalyst and its optimisation towards the decomposition of hydrogen peroxide

Cited by 90 publications

References 6 publications

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

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

Use of Pillared Clay-Based Catalysts for Wastewater Treatment Through Fenton-Like Processes

Advanced oxidation of photographic processing effluents on novel heterogeneous fibrous catalyst

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