Catalytic wet air oxidation of high BPA concentration over iron-based catalyst supported on orthophosphate

Kaissouni, Fatiha; Brahmi, Rachid; Zbair, Mohamed; Lafaye, Gwendoline; Assal, Zouhair El; Piraúlt-Roy, Laurence; Barbier, J.; Elaissi, Abdelkrim; Bensitel, M.; Baalala, M.

doi:10.1007/s11356-020-09176-3

Cited by 10 publications

(6 citation statements)

References 40 publications

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“…Advanced oxidation processes are one of the new technologies still in development. Wet air oxidation [ 34 , 35 ], electrochemical, electrochemical photocatalytic, radiation assisted catalytic reaction, catalytic wet peroxide oxidation, and other oxidation methods all rely on generating hydroxyl, superoxide, and hydroperoxyl radicals, employing different chemical agents and activation energy sources under defined temperature and pressure conditions. The challenge is to reach the total mineralization of the pollutant and avoid toxic by-products.…”

Section: Introductionmentioning

confidence: 99%

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

et al. 2021

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The hydrophilic and hydrophobic single-walled carbon nanotube membranes were prepared and progressively applied in sorption, filtration, and pertraction experiments with the aim of eliminating three antibiotics—tetracycline, sulfamethoxazole, and trimethoprim—as a single pollutant or as a mixture. The addition of SiO2 to the single-walled carbon nanotubes allowed a transparent study of the influence of porosity on the separation processes. The mild oxidation, increasing hydrophilicity, and reactivity of the single-walled carbon nanotube membranes with the pollutants were suitable for the filtration and sorption process, while non-oxidized materials with a hydrophobic layer were more appropriate for pertraction. The total pore volume increased with an increasing amount of SiO2 (from 743 to 1218 mm3/g) in the hydrophilic membranes. The hydrophobic layer completely covered the carbon nanotubes and SiO2 nanoparticles and provided significantly different membrane surface interactions with the antibiotics. Single-walled carbon nanotubes adsorbed the initial amount of antibiotics in less than 5 h. A time of 2.3 s was sufficient for the filtration of 98.8% of sulfamethoxazole, 95.5% of trimethoprim, and 87.0% of tetracycline. The thicker membranes demonstrate a higher adsorption capacity. However, the pertraction was slower than filtration, leading to total elimination of antibiotics (e.g., 3 days for tetracycline). The diffusion coefficient of the antibiotics varies between 0.7–2.7 × 10−10, depending on the addition of SiO2 in perfect agreement with the findings of the textural analysis and scanning electron microscopy observations. Similar to filtration, tetracycline is retained by the membranes more than sulfamethoxazole and trimethoprim.

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Section: Introductionmentioning

confidence: 99%

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

et al. 2021

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“…Nevertheless, noble metals are limited resources, and high costs have severely restricted their industrial applications. As transition metal oxides, cerium oxides appear to be good potential metal oxides because of their high oxygen storage capacity and rate of oxygen transfer, which are advantageous for their shape, giving CeO x a positive effect during the oxidation reaction [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Tailored Synthesis of Catalytically Active Cerium Oxide for N, N-Dimethylformamide Oxidation

et al. 2023

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Cerium oxide nanopowder (CeOx) was prepared using the sol–gel method for the catalytic oxidation of N, N-dimethylformamide (DMF). The phase, specific surface area, morphology, ionic states, and redox properties of the obtained nanocatalyst were systematically characterized using XRD, BET, TEM, EDS, XPS, H2-TPR, and O2-TPO techniques. The results showed that the catalyst had a good crystal structure and spherelike morphology with the aggregation of uniform small grain size. The catalyst showed the presence of more adsorbed oxygen on the catalyst surface. XPS and H2-TPR have confirmed the reduction of Ce4+ species to Ce3+ species. O2-TPR proved the reoxidability of CeOx, playing a key role during DMF oxidation. The catalyst had a reaction rate of 1.44 mol g−1cat s−1 and apparent activation energy of 33.30 ± 3 kJ mol−1. The catalytic performance showed ~82 ± 2% DMF oxidation at 400 °C. This work’s overall results demonstrated that reducing Ce4+ to Ce3+ and increasing the amount of adsorbed oxygen provided more suitable active sites for DMF oxidation. Additionally, the catalyst was thermally stable (~86%) after 100 h time-on-stream DMF conversion, which could be a potential catalyst for industrial applications.

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“…Among the important rare earth metal oxides, cerium oxide (CeO x ) has been commonly utilized during catalytic oxidation due to its high oxygen transfer rate, stability, and storage capability. [15][16][17] Previous studies indicate that the formation of deep synergetic interactions between CeO x and This journal is © The Royal Society of Chemistry 2023 efficient metal oxides could enhance the catalytic behavior in the selective oxidation process. [18][19][20] Additionally, the presence of CeO x could benefit a good metal distribution and offer more oxygen, which is advantageous to the oxidation activity.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature deep oxidation of N,N-dimethylformamide (DMF) over CeCu binary oxides

Monguen

Daniel

Tian

2023

Catal. Sci. Technol.

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Catalytic wet air oxidation of high BPA concentration over iron-based catalyst supported on orthophosphate

Cited by 10 publications

References 40 publications

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

Modified Single-Walled Carbon Nanotube Membranes for the Elimination of Antibiotics from Water

Tailored Synthesis of Catalytically Active Cerium Oxide for N, N-Dimethylformamide Oxidation

Low-temperature deep oxidation of N,N-dimethylformamide (DMF) over CeCu binary oxides

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