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Article Dans Une Revue Journal of Water Process Engineering Année : 2023

Enhancement of water remediation by innovative photocatalytic luminous textiles reactor: Performance, kinetic modeling, and mechanistic insights

Résumé

To address wastewater treatment, a photocatalytic process using luminous-textile has been proposed due to its high efficiency and non-toxicity. In the present work, the photodegradation of Ciprofloxacin (CIP) in the liquid phase was studied in a compact reactor with a luminous-textile catalyst in three different configurations: (i) “mono-face” (MF), (ii) “double-face” (DF) and (iii) “double-face without TiO2” (DF-without TiO2). The DF configuration exhibited the highest efficiency for CIP removal (99.7 %) and mineralization (40.3 %), followed by MF and DF-without TiO2. The DF luminous textiles, before and after CIP degradation, were characterized using scanning electron microscope and Fourier-transform infrared spectroscopy. The effect of operating parameters, such as CIP initial concentration (2–10 mg/L) and UV light intensity (0.08, 0.15 and 0.26 mW/cm2) on luminous-textile performance in terms of CIP degradation efficiency and mineralization yield was investigated. Good photocatalytic activity was found with 2 mg/L CIP initial concentration and 0.15 mW/cm2 UV light intensity. Moreover, the mineralization percentage reached 54.7 % and 61.2 % with the addition of 150 mg/L of H2O2 and 202 mg/L of PS, respectively. Additionally, the impact of radical scavengers was studied, proving that HO2, O-2, and especially radicals were the basic active species involved in CIP degradation mechanism. Furthermore, the degradation efficiency decreased from 99.7 % in ultra-pure water to 63.6 % in tap water (TW) and 46.1 % in synthetic water (SW), demonstrating the negative effects of nitrate, chloride, sulfate and bicarbonate ions on CIP degradation and mineralization efficiencies in TW and SW. In summary, the present study unraveled the mechanistic aspects of the excellent photocatalytic ability of the luminous-textile for the CIP mineralization.
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Dates et versions

hal-04303311 , version 1 (23-11-2023)

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Sarra Karoui, Aymen Amine Assadi, Achraf Ghorbal, Lotfi Khezami, Achraf Assadi, et al.. Enhancement of water remediation by innovative photocatalytic luminous textiles reactor: Performance, kinetic modeling, and mechanistic insights. Journal of Water Process Engineering, 2023, Journal of Water Process Engineering, 56, pp.104448-104448. ⟨10.1016/j.jwpe.2023.104448⟩. ⟨hal-04303311⟩
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