Acid Red 1 dye decolorization by heterogeneous Fenton-like reaction using Fe/kaolin catalyst

Daud, N.K.; Hameed, B.H.

doi:10.1016/j.desal.2010.11.016

Cited by 36 publications

(13 citation statements)

References 12 publications

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“…This optimum dose is equal to the one found by Ramirez et al [9] for treating the same dye, in batch mode, using saponite clay and activated carbon catalysts impregnated with iron. It is also similar to that reported in other studies [13,26,44].…”

Section: Influence Of the Dose Of H2o2 In The Cstr Feedsupporting

confidence: 82%

Heterogeneous Fenton’s oxidation using Fe/ZSM-5 as catalyst in a continuous stirred tank reactor

Queirós

Morais

Rodrigues

et al. 2015

Separation and Purification Technology

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This work is the first known report dealing with the heterogeneous Fenton-like process in a continuous stirred tank reactor. A Fe/ZSM-5 zeolite was used as catalyst for degradation of an azo dye (Orange II, OII)-containing solution.A parametric study was carried out to evaluate the effect of the main operating conditions in the basket reactor performance, namely temperature (in the range 10 - [H2O2]feed = 6 mM, W/Q = 200 mg.min/mL, dp2 and tresid = 90 min), it was achieved 91% of discoloration and 36% of mineralization, at steady-state. Moreover, it was found a removal of 29% in terms of the chemical oxygen demand (COD), being worth noting the improvement in the effluent biodegradability (k' -oxygen uptake rate -increased from 9.3 to 23.2 mgO2/(gVSS.h)) and the fact that the final effluent is non-toxic (0.0% of Vibrio fischeri inhibition).The stability of the catalyst performance was checked during five consecutive runs. The crucial factor for the catalyst long-term use is the leaching of iron, which in all runs reached very low levels (e.g. only 0.173 mg/L of iron for the run in the optimized conditions, corresponding to only 0.13% of leaching). The catalyst was characterized by different techniques before and after the reactions (namely SEM/EDS and N2 adsorption); textural and chemical transformations during its use can be considered negligible (except for very acidic conditions of pH = 1.5) favoring the catalytic stability of the Fe-zeolite.

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Section: Influence Of the Dose Of H2o2 In The Cstr Feedsupporting

confidence: 82%

Heterogeneous Fenton’s oxidation using Fe/ZSM-5 as catalyst in a continuous stirred tank reactor

Queirós

Morais

Rodrigues

et al. 2015

Separation and Purification Technology

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“…A iron pillared clay was able to remove 40% of methylene blue (Tireli et al, in press). Hou et al (2010) found for Fe-pillared clay values of 98.62 mg/g in the adsorption process using rhodamine B. Clays are widely employed in the removal of various classes of contaminants in aqueous media by adsorption processes (Daud and Hameed, 2010;Fatimah et al, 2010;Hou et al, 2010;Rivagli et al, 2014) because of high surface area and structures.…”

Section: Removal Of Methylene Bluementioning

confidence: 99%

Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Tireli

Marcos

Oliveira

et al. 2014

Applied Clay Science

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“…The Catalyst (Cu-clay) was prepared supporting the metal by the impregnation method [14]. In this process, Specific amount of Cu(No 3 ) 2 .3H 2 O (1.5-10 wt.% of copper ions in the catalyst) was dissolved in a beaker containing 50 mL of distilled water.…”

Section: Ii-3 Preparation Methods Of Catalystmentioning

confidence: 99%

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

Idrissi¹,

Miyah²,

Lahrichi³

et al. 2014

IJIRSET

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ABSTRACT:In this work, the decolorization of Methyl Orange was conducted using catalysts prepared by impregnation of copper on natural clay in the presence of H 2 O 2 . The catalysts Cu-clay, prepared from the concentrated metal precursor of (impregnation ratio, W(Cu(NO 3 ) 2 )/W(clay) = 1,5%-7,5%) were characterized by several methods such as X-ray diffraction (XRD), electronic scan microscopy (SEM), x-ray fluorescence (FX), and Brunauer-EmmettTeller (BET). Important factors affecting catalyst activity and methyl orange removal efficiencies were studied: the effects of temperature, oxidant concentration, and catalyst dosage. The results showed, a very significant activation of hydrogen peroxide by the catalyst, the Methyl Orange depletion percentage reaching 94 % after 2 h, and very stability of the catalyst. It was also observed that the best catalyst, at a reaction temperature of 25°C. 2,5ml of H 2 O 2 and 4.0 g/L of 5% Cu-clay, 94% decolorization was achieved within 120 min treatment. Although the Cu show high activity, their stability and reusability still need improvement.

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Acid Red 1 dye decolorization by heterogeneous Fenton-like reaction using Fe/kaolin catalyst

Cited by 36 publications

References 12 publications

Heterogeneous Fenton’s oxidation using Fe/ZSM-5 as catalyst in a continuous stirred tank reactor

Heterogeneous Fenton’s oxidation using Fe/ZSM-5 as catalyst in a continuous stirred tank reactor

Influence of magnetic field on the adsorption of organic compound by clays modified with iron

Preparation and Characterisation A Catalytic System Cu-Clay for Catalytic Oxidation of Methyl Orange with H2O2

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