Degradation of p-aminophenol by Fenton’s process. Influence of operational parameters

Ghosh, Prabir; Ghime, Damodhar; Lunia, Dolly

doi:10.37190/epe170318

Cited by 5 publications

(4 citation statements)

References 29 publications

(27 reference statements)

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“…Therefore, optimal condition for the degradation of 100 ppm of pAP catalyzed by FeCO 3 NPs@CALB- Mentha was obtained using water as solvent, whereas for FeCO 3 NRs@CALB was using acetate ( Figure 6 ). In both cases, the mechanism of degradation was similar to the previous reported, where pAP was oxidized to hydroquinone (HQ) and p-benzoquinone and finally the benzene rings are opened and oxidized to other smaller compounds which finally most of them are degraded to CO 2 and H 2 O [ 6 , 31 ]. Considering the fast reaction, the effect of hydrogen peroxide concentration was again also tested with this catalyst ( Figure 8 ).…”

Section: Resultssupporting

confidence: 79%

“…Among the different approaches described for the degradation of this organic pollutant, the development and use of metal nanostructured materials has increased in recent years [ 6 , 7 , 8 ]. The high surface-to-volume ratio of nanomaterials compared to bulk materials, together with the advantages of being a heterogeneous phase, makes them attractive candidates for their application as catalysts [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

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Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst

et al. 2018

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Full degradation of p-aminophenol in aqueous solution at room temperature by using a heterogeneous nanostructured iron hybrid catalyst in the presence of hydrogen peroxide is described. A nanostructured iron catalyst was prepared by in situ formation of iron carbonate nanorods on the protein network using an aqueous solution of an enzyme, lipase B from Candida antarctica (CAL-B). A second kind of iron nanostructured catalyst was obtained by the sunsequent treatment of the hybrid with an aqueous liquid extract of Mentha x piperita. Remarkable differences were observed using TEM imaging. When M. piperita extract was used, nanoparticles appeared instead of nanorods. Catalytic activity of these iron nanocatalysts was studied in the degradation of the environmental pollutant p-aminophenol (pAP) under different operating parameters, such as pH, presence of buffer or hydrogen peroxide concentration. Optimal conditions were pH 4 in acetate buffer 10 mM containing 1% (v/v) H2O2 for FeCO3NRs@CALB, while for FeCO3NRs@CALB-Mentha, water containing 1% (v/v) H2O2, resulted the best. A complete degradation of 100 ppm of pAP was achieved in 2 and 3 min respectively using 1 g Fe/L. This novel nanocatalyst was recycled five times maintaining full catalytic performance.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst

et al. 2018

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“…Therefore, careful treatment of wastewater containing 4AP is necessary before discharge into the environment. Different removal technologies have been investigated, such as biodegradation [3], adsorption [7][8][9], electrochemical oxidation [10], enzyme-catalysed hydrogen peroxide oxidation [11] and advanced oxidation processes, including photocatalytic oxidation [12], Fenton [13], photo-Fenton [4], photo-electrochemical oxidation [14], sono-ozonation [15] and sono-photodegradation [16] and solvent-assisted cavitation [17].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of 4-Aminophenol Removal from Aqueous Solutions by Emulsion Liquid Membranes Using Acid and Basic Type 1 Facilitations: Optimisation and Kinetics

et al. 2022

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The molecule 4-aminophenol (4AP) is recognised as a serious environmental pollutant that enters the environment during the manufacture and processing of a variety of industrial processes and through the degradation of some pharmaceutical products. This paper describes a comparative study of 4AP removal from aqueous solutions by emulsion liquid membranes using acid and basic type 1-facilitated transports. The results are explained by analysing the stripping process through both the different relative acid/basic strength of the hydroxyl and amine groups of the 4AP molecule and the hydrogen-bonding capacity with water of the ionisation products generated by the reaction of 4AP with HCl or NaOH. To optimize the 4AP removal process, the influence of different experimental conditions (stripping agent concentration in the product phase, surfactant concentration in the membrane phase, stirring rate, feed phase/emulsion phase volume ratio, product phase/membrane phase volume ratio and emulsification rate and time) were studied. The kinetics of the removal process has been analysed by fitting the experimental results to first order, second order and the Behnajady and Avrami models. The Behnajady model presents an excellent fit, allowing to calculate both the initial removal rate and the maximal removal conversion. Optimal conditions of the removal process obtained through these parameters are in full agreement with those obtained from the experimental study.

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“…The aqueous solution of p‐aminophenol (PAP) has the dual toxicity of aniline and phenol, which is harmful to the human body . To date, many methods have been proposed for removing PAP, the most common of which were the oxidative, photocatalytic, sonolysis and photolysis, adsorption . And the removal efficiency of PAP by these methods was displayed in Table .…”

Section: Introductionmentioning

confidence: 99%

Degradation of p‐aminophenol wastewater using Ti‐Si‐Sn‐Sb/GAC particle electrodes in a three‐dimensional electrochemical oxidation reactor

Zhang

Meng

et al. 2020

Applied Organom Chemis

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In this study, Ti‐Si‐Sn‐Sb/GAC particle electrodes were prepared by sol–gel method. The particle electrodes were characterized by SEM, XRD, EDX, and BET then used to carry out three‐dimensional (3D) electrocatalytic oxidation degradation on simulated refractory p‐aminophenol (PAP) wastewater. The effects of initial pH, cell voltage, aeration flow rate and initial PAP concentration on degradation experiments were investigated. Under the optimal conditions, the PAP and COD removal rates were 89.45% and 75.17% respectively. In addition, the possible degradation mechanism of PAP was further investigated by UV–Vis and HPLC. Finally, it was found that the Ti‐Si‐Sn‐Sb/GAC particle electrodes with high catalytic activity and excellent stability could significantly improve the PAP wastewater removal efficiency.

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Degradation of p-aminophenol by Fenton’s process. Influence of operational parameters

Cited by 5 publications

References 29 publications

Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst

Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst

Comparative Study of 4-Aminophenol Removal from Aqueous Solutions by Emulsion Liquid Membranes Using Acid and Basic Type 1 Facilitations: Optimisation and Kinetics

Degradation of p‐aminophenol wastewater using Ti‐Si‐Sn‐Sb/GAC particle electrodes in a three‐dimensional electrochemical oxidation reactor

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