Kinetics of phenol mineralization by Fenton-like oxidation

Bach, Altai; Shemer, Hilla; Semiat, Raphael

doi:10.1016/j.desal.2010.04.011

Cited by 68 publications

(31 citation statements)

References 17 publications

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“…classical Fenton process [9][10][11][12][13][14][15][16], Fenton-like treatment [17][18][19] and photo-Fenton process [20][21][22]. However, only two papers refer to electro-Fenton process [23,24].…”

Section: Ar(hoh) • + O 2 → Ar(oh) + Homentioning

confidence: 95%

A complete phenol oxidation pathway obtained during electro-Fenton treatment and validated by a kinetic model study

Mousset¹,

Frunzo

Esposito

et al. 2016

Applied Catalysis B: Environmental

156

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Section: Ar(hoh) • + O 2 → Ar(oh) + Homentioning

confidence: 95%

A complete phenol oxidation pathway obtained during electro-Fenton treatment and validated by a kinetic model study

Mousset¹,

Frunzo

Esposito

et al. 2016

Applied Catalysis B: Environmental

156

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“…Similar trends were observed in semi-continuous Fenton oxidation of phenol (Zazo et al 2009). Decreasing of aromatic intermediates' concentrations is attributed to the further oxidation by hydroxyl radicals to aliphatic acids and CO 2 (Yavuz et al 2007;Bach et al 2010). The decomposition of H 2 O 2 is also shown in Fig.…”

Section: Effect Of Irradiation Time and Initial Concentrationmentioning

confidence: 81%

Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Alalm

Tawfik

2014

Appl Water Sci

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In this study, solar photo-Fenton reaction using compound parabolic collectors reactor was assessed for removal of phenol from aqueous solution. The effect of irradiation time, initial concentration, initial pH, and dosage of Fenton reagent were investigated. H 2 O 2 and aromatic intermediates (catechol, benzoquinone, and hydroquinone) were quantified during the reaction to study the pathways of the oxidation process. Complete degradation of phenol was achieved after 45 min of irradiation when the initial concentration was 100 mg/L. However, increasing the initial concentration up to 500 mg/L inhibited the degradation efficiency. The dosage of H 2 O 2 and Fe ?2 significantly affected the degradation efficiency of phenol. The observed optimum pH for the reaction was 3.1. Phenol degradation at different concentration was fitted to the pseudo-first order kinetic according to Langmuir-Hinshelwood model. Costs estimation for a large scale reactor based was performed. The total costs of the best economic condition with maximum degradation of phenol are 2.54 €/ m 3 .

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“…Comparatively values of degradation (COD) are higher than mineralization (TOC). As Bach et al (2010) highlighted, high COD values do not necessarily signify completion of the oxidation reaction or removal efficiencies. Thus, the comparison of the AOP was limited to works reporting mineralization.…”

Section: Comparison With Similar Work On Phenol Mineralizationmentioning

confidence: 99%

“…The ranges of values used in this study were chosen to fall within the reported limits (Benatti et al, 2006;Martins et al, 2010;Martins et al, 2005 ]. However, recent studies report use of mass of reagents instead of molar concentration (Martins et al, 2005;Benatti et al, 2006;Martins et al, 2010;Bach et al, 2010). We thus, adopted the mass approach to determine the necessary amounts of the reagents that would maintain the ratio of the designed matrix (Table 1).…”

Section: Oxidant To Catalyst Mass Ratio [H 2 O 2 ]:[Fe 2+ ]mentioning

confidence: 99%

“…In addition, much work using the different AOPs have been published on treatment of phenol, bulk of the research either aimed at providing insight to the reaction pathways/reaction mechanism (Li et al, 2005;Banerjee and Ghoshal, 2005;Cai et al, 2007;Chen et al, 2008;Bach et al, 2010;Pontes et al, 2010) or finding optimum condition of degrading the phenol. On the latter objective, literature on optimising Fenton's process for phenol is scares and optimised condition reported were either based on the one variable at a time (OVAT) approach (Kavitha and Palanivelu, 2004;Kiril et al, 2010), did not account for the role of the Fenton reagent ratios (Kiril et al, 2010;Yalfani et al, 2009) or conducted at a fixed initial phenol concentration (Yalfani et al, 2009;Zazo et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Application of response surface methodology in process parameters optimization for phenol mineralization using Fentons peroxidation

Hasan¹,

Mohd²,

Daud³

2011

Afr. J. Biotechnol.

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Adverse effect of the highly biorecalcitrant compound phenol to the environment is well established and its concentrations in industrial effluents vary greatly from 2.8 to 6,800 mg/l depending on the source. Fenton process effectively mineralises to CO 2 and H 2 O but reported works consumed more reagents and require longer reaction times. Due to the strong interaction between the several predictor variables in the Fenton oxidation, response surface methodology was used to optimise the mineralization treatment. Efficient, faster and economical operating conditions for phenol removal were explored by investigating four parameters namely the concentration ratio of hydrogen peroxide to phenol - ((H 2 O ], respectively. The soluble iron content of the analysed supernatant was found to be below the 15 mg/l (the maximum limit allowable for total iron discharges required by common regulative subscribed). This indicated that, the Fenton reagents were utilised during the peroxidation reaction evident from the almost near consumption of all Fe 2+ introduced in about 85% of the samples, thus, negating the need for immobilising the Fe 2+ catalyst or its removal by post treatment. The work proves that the optimized Fenton process can be potentially used for treatment of any phenol containing wastewater.

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Kinetics of phenol mineralization by Fenton-like oxidation

Cited by 68 publications

References 17 publications

A complete phenol oxidation pathway obtained during electro-Fenton treatment and validated by a kinetic model study

A complete phenol oxidation pathway obtained during electro-Fenton treatment and validated by a kinetic model study

Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Application of response surface methodology in process parameters optimization for phenol mineralization using Fentons peroxidation

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