Degradation of Acid Blue 74 using Fe-ZSM5 zeolite as a heterogeneous photo-Fenton catalyst

Kasiri, Masoud B.; Aleboyeh, H.; Azam, Ameer

doi:10.1016/j.apcatb.2008.02.024

Cited by 322 publications

(129 citation statements)

References 27 publications

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“…This behavior can be explained based on the collusion theory [28]. With increasing the concentration of dye molecules per unit volume of reaction, the chance of collisions between these reactants molecules increased thus, the decolorization efficiency steadily increased.…”

Section: Effect Of Initial Dye Concentrmentioning

confidence: 99%

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>

Alwash¹,

Abdullah²,

Ismail³

2013

ACES

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The Zeolite Y as a support was modified by the incorporating of Fe and TiO 2 in one single step using impregnation method. The synergistic effects between those components enhance the catalytic activity for the degradation of amaranth dye under ultrasonic irradiation with output power of 50 W and 40 kHz frequency. Different characterization techniques were used to elucidate the physical and chemical properties of the produced catalysts. The XRD results indicated that the type of titanium precursor significantly effects on the crystallinity of 0.4% Fe/15%TiO 2 -NaY catalyst. The AFM results detected that the TiO 2 formed a layer covered the surface of zeolite while Fe clusters were located close to TiO 2 . The influence of reaction parameters such as TiO 2 and Fe content, pH values, amount of hydrogen peroxide used, catalyst loading and the initial dye concentration were investigated for the decolorization efficiency of amaranth. The maximum decolorization efficiency for 0.4%Fe/15%TiO 2 -NaY was 100% after 120 min of reaction time with an initial dye concentration of 30 mg/L, 2 g/L of catalyst loading, natural pH about 5.5 and 0.65 mM H 2 O 2 .

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Section: Effect Of Initial Dye Concentrmentioning

confidence: 99%

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>

Alwash¹,

Abdullah²,

Ismail³

2013

ACES

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“…The classic Fenton process (dissolved Fe(II) and H 2 O 2 ) [1] is capable of degrading organic pollutants into harmless chemicals such as CO 2 and H 2 O, but its application is limited by the narrow working pH range (<4) [2,3], separation and recovery of the iron species specially in industrial wastewater treatment [4]. For these reasons, the development of heterogeneous Fenton systems has received considerable interest and many heterogeneous Fenton-like catalysts have been reported, such as iron oxides [5][6][7][8], iron-immobilized zeolites [9], clays [10,11], and carbon materials [12]. Unlike the homogeneous systems, these solid catalysts could be recuperated by means of a simple separation operation and reused in next runs.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Fenton degradation of Rhodamine B over nanoscaled Cu-doped LaTiO3 perovskite

Zhang

Nie

et al. 2012

Applied Catalysis B: Environmental

193

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a b s t r a c tCu-doped LaTiO 3 perovskite was prepared with a sol-gel method and characterized by X-ray diffraction and X-ray photoelectron spectroscopy. The introduction of Cu induced the formation of LaTiO 3 perovskite in which titanium existed as Ti 3+ , resulting in the coexistence of Ti 3+/4+ and Cu +/2+ in the perovskite structure. LaTi 0.4 Cu 0.6 O 3 showed highly Fenton activity and stability for the degradation of RhB with H 2 O 2 in the initial pH range of 4-9. Moreover, the catalyst buffered the solution with the tested initial pH to around 7 during the adsorption process. The studies of electron spin resonance, the effect of radical scavengers and other experiments verified that H 2 O 2 was predominately converted into

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“…However, the application of traditional Fenton reaction is limited by the narrow working pH range (<4) [3,4], separation and recovery of the iron species specially in industrial wastewater treatment [5]. To overcome these drawbacks, some efforts have been made to develop heterogeneous Fenton systems [6,7] and many heterogeneous Fenton-like catalysts have been reported, such as iron oxides [8][9][10][11][12], iron-immobilized zeolites [13], clays [14,15], and carbon materials [16,17]. In comparison with the traditional ion Fenton catalysts, the heterogeneous catalysts can be used over a wider pH range for the degradation of organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Decolorization of methylene blue in layered manganese oxide suspension with H2O2

Zhang

Nie

et al. 2011

Journal of Hazardous Materials

123

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a b s t r a c tLayered birnessite-type manganese oxides (Na-OL-1) were prepared via a redox reaction involving MnO 4 − and Mn 2+ under markedly alkaline conditions. According to the XRD analysis, the resulting material exhibited a well-crystallized octahedral layer (OL) structure with several different phases, including ␤-MnOOH, ␣-MnOOH and ␥-Mn 3 O 4 . The catalyst was highly effective for the decolorization and degradation of methylene blue (MB) in the presence of H 2 O 2 at neutral pH. The tested MB was completely decolorized in Na-OL-1 suspension by the fraction dosing of H 2 O 2 (556.5 mM at the beginning and then 183.8 mM at 40 min). Based on the studies of electron spin resonance and the effect of radical scavengers, the 1 O 2 and O 2 •− were the main reactive oxygen species (ROS) in the reaction. It was found that both oxygen and ROS were generated from the decomposition of H 2 O 2 in Na-OL-1 suspension, wherein the decomposition pathways were proposed. The generation of H 2 O 2 in Na-OL-1 suspension at air atmosphere indicated that the existence of multivalent manganese oxides greatly enhanced the interfacial electron transfer, leading to the high activity of Na-OL-1.

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Degradation of Acid Blue 74 using Fe-ZSM5 zeolite as a heterogeneous photo-Fenton catalyst

Cited by 322 publications

References 27 publications

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>

Enhanced Fenton degradation of Rhodamine B over nanoscaled Cu-doped LaTiO3 perovskite

Decolorization of methylene blue in layered manganese oxide suspension with H2O2

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Degradation of Acid Blue 74 using Fe-ZSM5 zeolite as a heterogeneous photo-Fenton catalyst

Cited by 322 publications

References 27 publications

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO&lt;sub&gt;2&lt;/sub&gt;

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO&lt;sub&gt;2&lt;/sub&gt;

Enhanced Fenton degradation of Rhodamine B over nanoscaled Cu-doped LaTiO3 perovskite

Decolorization of methylene blue in layered manganese oxide suspension with H2O2

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Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>

Elucidation of Reaction Behaviors in Sonocatalytic Decolorization of Amaranth Dye in Water Using Zeolite Y Co-Incorporated with Fe and TiO<sub>2</sub>