Innovative carbon-nitrogen-TiO2 catalyst immobilised on stainless steel mesh for effective removal of orange II organic dye in the DCDBD plasma actuator

• Published in: Catalysis communications Vol. 183; p. 106778
• Main Authors: Mouele, Emile Salomon Massima, Mukaba, Jean-Luc, Ndayambaje, Guillaume, Tijani, Jimoh Oladejo, Eze, Chuks Paul, Ntsa, Evral, Myint, Myo Tay Zar, Kyaw, Htet Htet, Al-Abri, Mohammed, Dobretsov, Sergey, Bladergroen, Bernard, Petrik, Leslie
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-2023; Elsevier
• Subjects: Advanced technology; DCDBD; Degradation; O.II dye; Photocatalysts; Wastewater; Degradation; DCDBD; Advanced technology; Wastewater; Photocatalysts; O.II dye
• ISSN: 1566-7367; 1873-3905
• DOI: 10.1016/j.catcom.2023.106778

A double cylindrical dielectric barrier discharge (DCDBD) was optimised and coupled with SS/C-N-TiO2 photocatalysts produced by sol gel technique for the treatment of orange II (O.II) dye. The results show that degradation of 60 mg/L O.II with both systems followed first-order reaction. Higher removal of O.II was achieved with DCDBD-SS/C-N-TiO2 technology. The decomposition of O.II resulted in six and four degradation metabolites with DCDBD alone, and DCDBD-SS/C-N-TiO2, respectively. The COD and TOC removals reached 61.43% and 15.38%, respectively after 60 min of DCDBD run. This study demonstrates that DCDBD is a promising advanced technology for the treatment of dye wastewater.
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•Double cylindrical DBD (DCDBD) generates UV radiations and numerous reactive species•The optimised DCDBD efficiently mineralises wastewater dye in reduced times•OH, and ozone majorly contribute to the mineralisation of O.II dye•SS/C-N-TiO2 immobilised catalyst was well introduced into the DCDBD system•DCDBD/assisted photocatalyst is an advanced technology for wastewater purification