Effect of aqueous extracts from Ceriporiopsis subvermispora-biotreated wood on the decolorization of Azure B by Fenton-like reactions

Aguiar, André; Ferraz, André

doi:10.1016/j.ibiod.2012.07.010

Cited by 20 publications

(8 citation statements)

References 41 publications

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“…As previously suggested by Santana and Aguiar [32], the addition of 3-HAA to Fenton processes is far from practical, due to its elevated cost. Recently, the use of aqueous wood extracts [52] or an industrial effluent [26], both containing natural compounds, have improved the degradation of different organic pollutants through Fenton processes. These solutions could serve as low-cost alternatives for obtaining redox mediators.…”

Section: Resultsmentioning

confidence: 99%

Kinetic Evaluation of Dye Decolorization by Fenton Processes in the Presence of 3-Hydroxyanthranilic Acid

Santana

Ramos

Velloso

et al. 2019

IJERPH

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The fungal metabolite 3-hydroxyanthranilic acid (3-HAA) was used as a redox mediator with the aim of increasing dye degradation by Fenton oxidative processes (Fe2+/H2O2, Fe3+/H2O2). Its Fe3+-reducing activity can enhance the generation of reactive oxygen species as HO● radicals. Initially, the influence of 3-HAA on decolorization kinetics of five dyes (methylene blue, chromotrope 2R, methyl orange, phenol red, and safranin T) was investigated using decolorization data from a previous work conducted by the present research group. Fe3+-containing reaction data were well fitted with first-order and mainly second-order kinetic models, whereas the BMG (Behnajady, Modirshahla and Ghanbary) model obtained optimal fit to Fe2+. Improvements in kinetic parameters (i.e., apparent rate constants and maximum oxidation capacity) were observed with the addition of 3-HAA. In another set of experiments, a decrease in apparent activation energy was observed due to introducing 3-HAA into reactions containing either Fe2+ or Fe3+ in order to decolorize phenol red at different temperatures. This indicates that the redox mediator decreases the energy barrier so as to allow reactions to occur. Thus, based on recent experiments and the reaction kinetics models evaluated herein, pro-oxidant properties have been observed for 3-HAA in Fenton processes.

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Section: Resultsmentioning

confidence: 99%

Kinetic Evaluation of Dye Decolorization by Fenton Processes in the Presence of 3-Hydroxyanthranilic Acid

Santana

Ramos

Velloso

et al. 2019

IJERPH

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“…Recently, diluted wood extracts containing DHBs have increased azure B decolorization through Fenton-like reactions [13]. In a DHB-driven Fenton reaction, the OH radicals are formed at highest levels and for long periods of time due to the constant regeneration of Fe 2+ ions by passing reaction 2 [6,7,14].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Behavior of dihydroxybenzenes and gallic acid on the Fenton-based decolorization of dyes

Barreto

Santana

Aguiar

2016

Desalination and Water Treatment

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A B S T R A C TDihydroxybenzenes (DHBs) are used as mediators to increase the degradation of recalcitrant organic pollutants by Fenton reaction. DHBs regenerate Fe 2+ ions, resulting in the formation of OH radicals in a more intense and continuous manner than the classical Fenton reaction. The present work investigates the behavior of different DHBs and gallic acid (a trihydroxybenzene) on the decolorization of dye solutions by Fenton systems (Fe 2+ /H 2 O 2 , Fe 3+ /H 2 O 2 ). For the majority of DHBs and gallic acid, pro-oxidant properties were observed on the decolorization of methylene blue, chromotrope 2R, methyl orange, and phenol red. These properties were dependent on the hydroxyl position in the aromatic ring and were highly influenced by the structure and redox potential of the target pollutant. The dye decolorization by Fenton-like reaction (Fe 3+ /H 2 O 2 ) in the presence of 2,5-dihydroxybenzoic acid as mediator was more efficient than classical Fenton reaction. For example, Fe 3+ /H 2 O 2 /2,5-dihydroxybenzoic acid system provided 60% of phenol red decolorization against 40% by Fe 2+ /H 2 O 2 after 60 min of reaction. DHBs and gallic acid increased the decolorization of dyes, requiring the highest H 2 O 2 consumption. However, H 2 O 2 consumption occurred even when the dye solutions were not extensively decolorized, suggesting that part of the generated OH radicals reacted with either DHBs, H 2 O 2 or other reactive species in solution.

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“…This dual behavior have been attributed to reaction variables like reagents concentration and pH (84,85) . Between these are highlighted flavonoids (86) , carotenoids, ascorbic acid, tocopherols (87) and DHB (88)(89)(90)(91) .…”

Section: Ligands Effects On Fenton Reactionmentioning

confidence: 99%

Fenton Reaction Driven by Iron Ligands

Salgado

Melín

Contreras

et al. 2013

J. Chil. Chem. Soc.

107

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One of the most important sources of reactive oxygen species (ROS) in biological systems is the Fenton reaction. In this, the Fe 2+ or Fe 3+ reacts with H 2 O 2 to produce ROS as the hydroxyl radical (•OH), superoxide radical (O 2 •-) and singlet oxygen ( 1 O 2 ). The main ROS, responsible for the high oxidizing power of the Fenton reaction, is not clear. Some authors claim that the principal reactive species is •OH, while others propose a ferryl specie (Fe 4+ or [FeO] 2+ ) (1,2) . Recently, have been proposed that the kind of reaction species produced depends mainly of pH and the iron composition of the coordination sphere. This is highlighted for Fe 3+ , because in mono and (some) bis-complexes Fe 3+ is reduced to Fe 2+ and there are some positions occupied by water or hydroxide ligands, readily to be exchanged by H 2 O 2 . On the other hand, in tris-complexes there are not any positions occupied by water or hydroxide, avoiding the formation of peroxo-complexes, necessary for Fenton or Fenton like reaction.The 1,2-dihydroxybenzenes (DHBs) have been described as modulators of Fenton reaction. The DHBs driven Fenton reaction have been used for environmental applications as an advanced oxidation process. Furthermore, these systems participate in different biological process, as the wood biodegradation by fungi and oxidative stress in neurodegenerative diseases.In this review, the effect of 1,2-dihydroxybenzenes on the activated species production by the Fenton and Fenton like reaction will be discussed and its participation in different systems.

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Effect of aqueous extracts from Ceriporiopsis subvermispora-biotreated wood on the decolorization of Azure B by Fenton-like reactions

Cited by 20 publications

References 41 publications

Kinetic Evaluation of Dye Decolorization by Fenton Processes in the Presence of 3-Hydroxyanthranilic Acid

Kinetic Evaluation of Dye Decolorization by Fenton Processes in the Presence of 3-Hydroxyanthranilic Acid

Behavior of dihydroxybenzenes and gallic acid on the Fenton-based decolorization of dyes

Fenton Reaction Driven by Iron Ligands

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