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- 저자 : Sabrine Zghal (검색결과 1 건)
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Sabrine Zghal,Ilyes Jedidi,Marc Cretin,Sophie Cerneaux,Didier Cot,Serge Lagerge,Stefano Deabate,Makki Abdelmouleh 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.8
The highest total organic carbon (TOC) and color removal efficiency of Acid Orange 7 (0.1 mM initialconcentration) on graphite carbon/carbon nanotubes electrodes (KS44/CNT) reached more than 98% in three hours ofElectro-Fenton (EF) treatment under optimal conditions (pH=3 and I=20 mA), compared to carbon graphite electrodedeveloped without carbon nanotubes (KS44-0). The apparent kinetic constants of degradation were 0.17 and0.12 min1 for the KS44-(20)/CNT and KS44-0, respectively. The long-term stability and system durability were attributedto the graphite carbon/CNT electrodes due to continuous operating treatment that allowed processing efficiency andreusability without any decrease of the catalytic activity in time after five cycles of use. Regardless of the medium, superiordecolorization and TOC removal efficiency were obtained for electrodes (KS44-(20)/CNT) containing 20 wt% offerrocene powder as catalyst for CNTs’ growth and iron nanoparticle establishment. Furthermore, the presence ofCNTs and iron particles as precursors enhanced drastically the electrochemical and physical properties of the electrodesynthesized in a one-step process. The results confirmed that carbon electrodes behave as multifunctional materials actingboth as adsorbent and active cathode in the electro-Fenton process for the destruction and total mineralization ofAcid Orange 7 (AO7) as a model for organic contaminated wastewater.
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