Influence of visible light LEDs modulation techniques on photocatalytic degradation of ceftriaxone in a flat plate reactor

Morante, Nicola; Tammaro, Olimpia; Albarano, Luisa; De Guglielmo, Luca; Oliva, Nunzio; Sacco, Olga; Mancuso, Antonietta; Castellino, Micaela; Sannino, Diana; Femia, Nicola; Lofrano, Giusy; Libralato, Giovanni; Esposito, Serena; Vaiano, Vincenzo

doi:10.1016/j.cej.2024.149175

Cited by 7 publications

(1 citation statement)

References 51 publications

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“…Several case studies described a toxicity increase as a consequence of the oxidation of organic contaminants in water (Zazo et al, 2005;Huang et al, 2015;Hübner et al, 2015). The battery of selected toxicity tests (i.e., A. fischeri, R. subcapitata, and D. magna) was used previously to investigate the effects of other AOP technologies (Gómez-Ramos et al, 2011;Gong and Chu, 2016;Cardito et al, 2024;Morante et al, 2024;Rescigno et al, FIGURE 4 UV-HPLC areas of (A) P-284, (B) P-288 and (C) P-336 as a function of treatment time.…”

Section: Toxicity Assessmentmentioning

confidence: 99%

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Giardina,

Lofrano,

Libralato

et al. 2024

Front. Environ. Chem.

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Non-thermal plasma (NTP) is gaining increasing attention as a promising approach for advanced water treatment to degrade persistent organic pollutants. Aqueous solutions of sulfamethoxazole (4-amino-N-(5-methylisoxazol-3-yl)-benzensulfonamide, SMZ), an antibiotic largely employed for humans and animals and a widespread persistent pollutant of waters and wastewaters, were subjected to air NTP treatment in a dielectric barrier discharge (DBD) reactor. The effects of SMZ initial concentration and of the solution pH on SMZ decomposition kinetics and transformation products were investigated. Efficient degradation was achieved, resulting in the complete removal of SMZ (10 μM initial concentration) in less than 25 min treatments, in the exhaustive mineralization (a result never reported before in plasma treatments and seldom reached also with other advanced oxidation processes) of all organic carbon in 6 h and in an energy efficiency of 6.4 g/kWh at 50% conversion. By means of HPLC-UV/Vis and LC-ESI-MSn analyses, a number of organic transformation products was identified along the path to SMZ mineralization, all present always in very small amounts and in turn decomposed at short treatment times. The effect of the solution pH on the genesis and decay of transformation products was also investigated. Based on comparisons with literature data and on previous findings obtained with the DBD reactor used in this work, it is concluded that the major reactive species involved in the degradation of SMZ are the hydroxyl radical and ozone. Finally, toxicological analyses of water initially containing 0.5 mM SMZ and subjected to 4 h NTP treatment showed that the by-products are not toxic to Raphidocelis subcapitata and Daphnia magna, while residual toxicity was detected by Aliivibrio fischeri.

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Section: Toxicity Assessmentmentioning

confidence: 99%

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Giardina,

Lofrano,

Libralato

et al. 2024

Front. Environ. Chem.

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Unraveling the Role of CuO in Cu_xO/TiO₂ Photocatalyst for the Direct Propylene Epoxidation With O₂ in a Fluidized Bed Reactor

Morante,

Tammaro,

Monzillo

et al. 2024

ChemSusChem

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Propylene epoxidation in mild conditions with molecular O2 is a highly desirable reaction that represents a significant challenge in the field of heterogeneous catalysis. In this work, CuxO/TiO2 composites with different CuO loadings were used to promote the photocatalytic epoxidation of propylene with molecular oxygen under UV‐A irradiation in a fluidized bed system. Different characterization techniques were employed to assess the influence of CuO content on the physical‐chemical properties of the CuxO/TiO2 composites. The best combination in terms of propylene conversion and selectivity towards propylene oxide (18.1% and 72%, respectively) was obtained with CuxO/TiO2 at 1.1 wt % CuO, as shown by photocatalytic tests. The high propylene oxide selectivity is due to the ability of CuO in the CuxO/TiO2 composite to transform molecular O2 into hydrogen peroxide that in turn is able to directly oxidize propylene to propylene oxide. By using a UV‐A light intensity of 297.2 mW cm‐2, the propylene conversion and the epoxide yield were 31.5 and 22.2%, respectively, significantly higher than that reported in the literature. Moreover, the energy consumption of the reaction system was significantly lower than that of literature photocatalytic systems dealing with selective propylene epoxidation.

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Ti-MOG derived TiO2 facet heterojunction rich in C/Ti3+/Ov for adsorption-photocatalytic removal of pharmaceutical pollutants from water

Zhang,

Shen

et al. 2024

Chemical Engineering Journal

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Influence of visible light LEDs modulation techniques on photocatalytic degradation of ceftriaxone in a flat plate reactor

Cited by 7 publications

References 51 publications

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Unraveling the Role of CuO in Cu_xO/TiO₂ Photocatalyst for the Direct Propylene Epoxidation With O₂ in a Fluidized Bed Reactor

Ti-MOG derived TiO2 facet heterojunction rich in C/Ti3+/Ov for adsorption-photocatalytic removal of pharmaceutical pollutants from water

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Influence of visible light LEDs modulation techniques on photocatalytic degradation of ceftriaxone in a flat plate reactor

Cited by 7 publications

References 51 publications

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Air non-thermal plasma, a green approach for the treatment of contaminated water: the case of sulfamethoxazole

Unraveling the Role of CuO in CuxO/TiO2 Photocatalyst for the Direct Propylene Epoxidation With O2 in a Fluidized Bed Reactor

Ti-MOG derived TiO2 facet heterojunction rich in C/Ti3+/Ov for adsorption-photocatalytic removal of pharmaceutical pollutants from water

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Product

Resources

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Unraveling the Role of CuO in Cu_xO/TiO₂ Photocatalyst for the Direct Propylene Epoxidation With O₂ in a Fluidized Bed Reactor