High-Efficiency Degradation of Orange II by Co78Si8B14/g-C3N4 Composite Catalyst in a Visible-Light-Assisted Peroxymonosulfate Activation System

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1733 - 1733

Published: April 10, 2025

Peroxynitrite-based advanced oxidation technology has gradually become a research hotspot for degrading dye wastewater due to its high efficiency and environmentally friendly features. Transition metal elements, which are commonly used as catalysts the activation of persulfates, suffer from problems such easy deactivation leaching ions, limit their practical application. In this study, Co78Si8B14/g-C3N4 composite were prepared by wet milling ball methods investigate degradation Orange II dyes assisting peroxynitrite under visible light, effects catalyst ratio, light intensity, dosage on performance investigated. It was shown that optimum ratio Co78Si8B14 g-C3N4 1:3, reaction rate constants orange + PMS VIS 4.3 5.37 times higher than those single PMS, respectively. Meanwhile, also showed good rhodamine B, methyl orange, methylene blue dyes, effect could reach more 75%. Cyclic stability tests maintained 94% over multiple cycles with low ion dissolution concentration. Its catalytic activity is attributed lowest adsorption energy (Eads = −1.97 eV), facilitates reaction, while synergistic promotes production ·SO4, ·OH, ·O2−. This study provides new ideas development stable efficient expand synergy between PMS-based other technologies.

Language: Английский

Controllable fabrication of cobalt molybdate nanofibers with oxygen vacancies induced by calcinable polymer for peroxymonosulfate activation towards water treatment

Applied Surface Science, Journal Year: 2024, Volume and Issue: 674, P. 160965 - 160965

Published: Aug. 11, 2024

Language: Английский

Advanced Processes in Water Treatment: Synergistic Effects of Hydrodynamic Cavitation and Cold Plasma on Rhodamine B Dye Degradation

Processes, Journal Year: 2024, Volume and Issue: 12(10), P. 2128 - 2128

Published: Sept. 30, 2024

The increasing pollution of water bodies, due to the constant release highly toxic and non-biodegradable organic pollutants, requires innovative solutions for environmental remediation wastewater treatment. In this study, effectiveness different Advanced Oxidation Processes (AOPs) purification contaminated with Rhodamine B (RhB) dye at a concentration 5 mg/L were investigated compared. Using classical ozonation strategy as benchmark treatment, research showed over 99% degradation RhB within 4 min in laboratory-scale batch setup capacity 0.2 L. contrast, “chemical-free” process exploiting ultrasound (US) technology achieved 72% rate 60 min. Further experiments conducted using pilot-scale rotor-stator hydrodynamic cavitation (HC) reactor on 15 L solution leading 33% removal presence hydrogen peroxide (H2O2) 75 mg/L. However, use an cavitational reactor, which hybridizes HC cold plasma, remarkable efficiency 97% just when treating inlet pressure 20 bar loop configuration. addition, 58% was observed flow-through configuration, emphasising robustness scalability HC/electrical discharge (ED) plasma technology. These results underline potential hybrid HC/ED intensified scalable water, it offers catalyst- oxidant-free protocol.

Language: Английский