UV- and US-Based Oxidation of a Triazine Azo Dye (Reactive Red 120): Operational Parameters, Kinetics, Water Matrix Effect, Predominant Radicals, and Energy Efficiency
Yükleniyor...
Dosyalar
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute for Ionics
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
In this work, ultraviolet (UV)-/ultrasound (US)-based advanced oxidation processes were used to removal of Reactive Red 120 (RR120). The optimum conditions were determined as initial dye concentration = 100mg L?1, hydrogen peroxide concentration (H2O2) = 100 mg L?1, pH = 3 for the UV/H2O2 process, iron dosage (Fe2+) = 50 mg L?1, [H2O2] = 250mg L?1, pH = 3, ultrasound frequency = 53 kHz, and ultrasound power = 90 W for the sono-Fenton (Fe/H2O2/US) process. Besides, in the mineralization study, total organic carbon (TOC) reductions were 37.5%, 43.7%, 50.5%, and 58.9% for Fe/H2O2/US, UV/H2O2, foto-Fenton (Fe/H2O2/UV), and sono-photo-Fenton (Fe/H2O2/UV/US) processes, respectively. The sole and other processes removal percentages were below 27%. These results help us to understand how these different advanced oxidation processes removal performances by means of decolorization efficiencies are similar like as TOC reduction. A significant reduction in removal performance (27.8% because tert-butyl alcohol) of was found compared with no addition of radical scavenger (89.2%) in UV/H2O2. For sono-Fenton, the same situation was occurred, and the removal efficiency was decreased from 70.2 to 42.5% because of sodium azide radical scavenger. In the water matrix study, regardless of this process in the area of removal performance, the major issue of some ions persistence. (The performance declined 89.2–40.7% due to the carbonate ions for UV/H2O2; increased 70.2–82.1% due to the carbonate ions for sono-Fenton.) These findings may shed light on these processes’ behavior of azo dyes in some specific scenarios such as laboratory or pilot scale utilization.
Açıklama
Anahtar Kelimeler
Detrimental Compounds, Energy Efficiency, Kinetic, Predominant Radicals, Water Matrix Effect
Kaynak
Arabian Journal for Science and Engineering
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
