Rapid decolourization and mineralization of the azo dye C.I. Acid Red 14 by heterogeneous Fenton reaction

Idel-aouad, Rajaa; Valiente, Manuel; Yaacoubi, Abdlrani; Tanouti, B.; López‐Mesas, Montserrat

doi:10.1016/j.jhazmat.2010.11.056

Cited by 120 publications

(42 citation statements)

References 31 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: 92%

“…In fact, Idel-aouada et al [26] observed a little decrease of acid red 14 dye reduction (from 100 to 93% in the 1 st vs. 3 rd run, respectively) when using a Fe(II)-Y zeolite as catalyst, while other authors noticed some decay of activity with other supports like saponite clay [9]; activated carbons also proved to be stable [8,14].…”

Section: Stability Of the Catalystmentioning

confidence: 95%

“…Zeolites are of particular interest as catalysts in this topic; in fact, their catalytic and adsorptive potential are well known in various reactions such as the reduction of nitrous oxides, oxidation of benzene to phenol, as well as in heterogeneous AOPs, namely ozonation [18,19], photoFenton [20][21][22] and Fenton [17,[23][24][25][26] processes.…”

Section: Introductionmentioning

confidence: 99%

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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: 92%

Section: Stability Of the Catalystmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…As can be seen from Fig.3-a, the MO degradation rate was increased by the increase of H 2 O 2 concentration from 31.5 to 126 mM. The increase in the H 2 O 2 concentration resulted in an increase in the reaction activity, as expected, due to an increase of • OH that place active role in the degradation of MO (Idel-aouad et al 2011). The effect of MO concentration was also investigated.…”

Section: Methyl Orange Degradationsupporting

confidence: 64%

Metil Oranj Bozunması ve Epinefrin Oksidasyonu için PEI-M [M:Cu(II) ve Co(II)] Hidrojel Katalizör

Şahiner¹,

Demirci²,

Ghorbanloo³

2015

Çanakkale Onsekiz Mart Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Here, we report the catalytic activity of catalyst derived from polyethylene imine-M (II) (PEI-M: Cu(II), and Co(II)) hydrogel composite in the presence of H 2 O 2 as an oxidant. The PEI-Cu(II)/H 2 O 2 heterogeneous composite was used in the degradation of an azo-dye, methyl orange (MO) in aqueous solution. In the presence of 63 mM H 2 O 2 , 100% of MO was removed in 80 min. The kinetics investigation of the processes demonstrated a pseudofirst-order kinetic model was applicable. Additionally, a pharmaceutical product, epinephrine (EP) was partially oxidized to adrenochrome by PEICo(II)/H 2 O 2 hydrogel composite system. About 50% of conversion to adrenochrome was reached in less than 55 min again comply with the pseudo-first-order Keywords: Hydrogel-metal ion composite; azo compound degradation; epinephrine oxidation; drug oxidation; hydrogel catalyst. Metil Oranj Bozunması ve Epinefrin Oksidasyonu için PEI-M [M:Cu(II) ve Co(II)] Hidrojel Katalizör ÖzetBu çalışmada, Polietilenimin-M(II) (PEI-M: Cu(II) ve Co(II)) hidrojel kompozitlerinin H2O2 indirgeyici olarak kullanılıdığı reaksiyonlarda katalitik aktiviteleri incelendi. Buna göre, PEI-Cu/H2O2 heterojen kompozitleri metil oranjın sulu çözeltisinde (MO) bozunma reaksiyonunda katalizör olarak kullanıldı. Metil oranj, 63 mM H2O2 varlı-ğında %100 olarak 80 dakikada ortamdan uzaklaştırıldı. Metil oranj bozunma reaksiyonunun kinetik çalışmalarında pseudo birinci dereceden kinetik modele uygulanabilir olduğu gösterildi. Bunlara ek olarak, bir ilaç olan epinefrin (adrenalin), PEI-Co(II)/H2O2 hidrojel kompozit sistemi varlığında adrenokrom'a yükseltgendi. Epinefrin'in yaklaşık %50'si 55 dakikadan daha az bir sürede adrenokroma dö-nüştürüldü ve pseudo birinci dereceden kinetik modele uygulanabilir olduğu gösterildi. MO ve EP yükseltgenmesi reaksiyonlarının aktivasyon enerjileri sırasıyla 44,09 ve 58,02 Anahtar Sözcükler: Hidrojel-metal iyon kompozit, azo bileşiklerinin bozunması, epinefrin yükseltgenmesi, ilaç yük-seltgenmesi, hidrojel kompozit.

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“…33 The reusability of the catalyst in sequential uses for the removal of organic pollutants is important from an economic viewpoint. 35 Therefore, five repetitive cycles for the degradation of AR17 were performed. After each experiment, the applied catalyst was recovered, washed with distilled water, dried at 70…”

Section: Effect Of Catalyst Dosage and Reusabilitymentioning

confidence: 99%

Heterogeneous Fenton-like degradation of Acid Red 17 using Fe-impregnated nanoporous clinoptilolite: artificial neural network modeling and phytotoxicological studies

Khataee¹,

Fathinia²,

Bozorg³

2016

Turk J Chem

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Rapid decolourization and mineralization of the azo dye C.I. Acid Red 14 by heterogeneous Fenton reaction

Cited by 120 publications

References 31 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

Metil Oranj Bozunması ve Epinefrin Oksidasyonu için PEI-M [M:Cu(II) ve Co(II)] Hidrojel Katalizör

Heterogeneous Fenton-like degradation of Acid Red 17 using Fe-impregnated nanoporous clinoptilolite: artificial neural network modeling and phytotoxicological studies

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