Low-cost iron-doped catalyst for phenol degradation by heterogeneous Fenton

Leal, Tarcísio Wolff; Lourenço, Luís Antônio; Brandão, Heloisa de Lima; Silva, Adriano da; Souza, Selene M.A. Guelli U. de

doi:10.1016/j.jhazmat.2018.07.018

Cited by 43 publications

(10 citation statements)

References 63 publications

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“…Therefore, complete degradation and mineralization of phenol from the wastewater is very important. 1,2 At present, many technologies are used to treat phenol and its derivatives in wastewater, such as biodegradation, 3,4 physical adsorption, 5 electrochemical degradation, 6,7 advanced oxidation processes (AOPs), 8,9 etc. Among them, catalytic wet oxidation (CWAO) has been widely researched due to the use of catalysts that allow performing the process in milder conditions while improving the process efficiency.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cu-Loaded Biomass-Derived Activated Carbon Catalysts for Catalytic Wet Air Oxidation of Phenol

Zhang

et al. 2020

Ind. Eng. Chem. Res.

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A series of Cu-loaded biomass-derived activated carbon (Cu/AC) catalysts with various impregnation ratios were prepared by precursor impregnation (PI) and activated carbon impregnation (ACI) methods. N 2 adsorption−desorption, inductively coupled plasma, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, etc., were used to investigate their physicochemical properties. The performance of catalytic wet air oxidation (CWAO) of phenol using O 2 as the oxidant was evaluated. The results demonstrated that the catalysts prepared by the PI method have higher specific surface area and Cu content. In the catalysts, Cu species coexisted with Cu 2+ and (Cu + + Cu 0 ). The content of (Cu + + Cu 0 ) in PI catalysts was higher, which was favorable for the formation of free radicals (O 2 − • and HO•), and then improved the conversions of phenol and chemical oxygen demand. The PI catalyst prepared with an impregnation ratio of 3 exhibited the best catalytic activity for phenol oxidation. Meanwhile, the loss of Cu species was the main cause of catalyst deactivation.

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Section: Introductionmentioning

confidence: 99%

Preparation of Cu-Loaded Biomass-Derived Activated Carbon Catalysts for Catalytic Wet Air Oxidation of Phenol

Zhang

et al. 2020

Ind. Eng. Chem. Res.

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“…Its application in the degradation of other organic pollutants such dyes is not often reported [8,[23][24][25][26]. The development of heterogeneous Fenton and Fenton-like catalysts has been extensively explored, using materials based on zeolites, clays and activated carbon loaded with iron and copper [24,[27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of Tartrazine in Aqueous Solution Using a Pillared Clay with Aluminum and Iron

Gálvez-Serna

Macías-Quiroga

Giraldo-Gómez

et al. 2021

Bull. Chem. React. Eng. Catal.

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In this work, pillared bentonite with Al−Fe (Al−Fe−PILC) was synthesized and used as a heterogeneous Fenton-like catalyst in the oxidation of tartrazine azo-dye in an aqueous solution. The modification of bentonite with the Al-Fe mixed system in a concentrated medium, with ultrasound assisted intercalation was carried out, and the obtained catalyst was characterized by XRF, XRD, and N2 adsorption at 77 K. The oxidation of tartrazine with Al−Fe−PILC, using different amounts of H2O2, expressed as a multiple (1, 3, 6, and 9) of a stoichiometry amount required to completely oxidize the dye was evaluated. The reaction of catalytic wet peroxide oxidation (CWPO) of the dye with 400 mg of Al−Fe−PILC and 6 times the stoichiometric amount of H2O2 at 25 °C, reached 98.2±1.8% of decolorization, 51.9±1.9% of TOC removal and 71.5±1.8% of TN removal. Results of this study show that the oxidation of tartrazine increased with the amount of H2O2 up to a certain limit. This oxidation process can be considered as an alternative for treating wastewater containing azo-dye because the reaction takes place under mild experimental conditions (room temperature and atmospheric pressure). Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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“…Phenols and their derivatives have been extensively used in the industrial domain, where refineries, petrochemicals, and pharmaceuticals, as well as the coal industry, make considerable contributions to phenolic contamination [1][2][3]. Phenol is one of the primary pollutants identified as a teratogenic and carcinogenic agent by the United States Environmental Protection Agency due to its resistance to degradation and high toxicity [4,5]. It is challenging to effectively remove phenol from wastewater, and various treatments such as thermal, biological, and chemical techniques have been explored.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Catalytic Performance and Stability of Iron-Loaded ZSM-5, Zeolite-A, and Silica for Phenol Degradation: A Microscopic and Spectroscopic Approach

et al. 2019

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In this study, we compared the performances of three iron-containing crystalline and amorphous catalysts, that is, Fe-Zeo-A, Fe-ZSM-5, and Fe-silica, respectively, for the degradation of phenol in an aqueous solution. Catalytic activity for the degradation of phenol was assessed by heterogeneous photolysis, Fenton, and photo-Fenton oxidation. All catalysts exhibited higher activity in the photo-Fenton process. In addition, the catalyst stability was evaluated by the estimation of the iron loss and structural variations after the oxidation processes. Results revealed that Fe-silica and Fe-ZSM-5 exhibit higher catalytic activity (~100% phenol removal), while only 64% of phenol removal over Fe-Zeo-A was observed. Moreover, among all catalysts, Fe-ZSM-5 exhibited higher stability with low iron leaching, attributed to the uniform distribution of bonded Fe in the crystalline framework and narrow channels. On the contrary, amorphous Fe-silica exhibited higher iron leaching due to the presence of isolated iron species in the structure, leading to the partial involvement of a homogeneous reaction during the degradation of phenol. The structural stability of Fe-based catalysts was examined using microscopic and spectroscopic techniques.

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Low-cost iron-doped catalyst for phenol degradation by heterogeneous Fenton

Cited by 43 publications

References 63 publications

Preparation of Cu-Loaded Biomass-Derived Activated Carbon Catalysts for Catalytic Wet Air Oxidation of Phenol

Preparation of Cu-Loaded Biomass-Derived Activated Carbon Catalysts for Catalytic Wet Air Oxidation of Phenol

Catalytic Oxidation of Tartrazine in Aqueous Solution Using a Pillared Clay with Aluminum and Iron

Heterogeneous Catalytic Performance and Stability of Iron-Loaded ZSM-5, Zeolite-A, and Silica for Phenol Degradation: A Microscopic and Spectroscopic Approach

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