Decolorization of Reactive Red 239 Using UV-C Activated Peroxydisulfate
Küçük Resim Yok
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Hard
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Decolorization of Reactive Red 239 (RR239) using a sulfate radical (SO4 center dot-)-based advanced oxidation process was investigated in a batch photoreactor. SO4 center dot- was generated in situ through activation of peroxydisulfate under UV-C illumination. Effect of initial pH (3-9), initial dye concentration (20-50 mg dm(-3)), S2O82- dosage (0-3 mmol dm-3) and lamp power (0-16 W) were explored. It was found that initial pH of RR239 solution had no considerable effect on decolorization efficiency. Experimental results demonstrated that decolorization efficiency enhanced with increasing S2O82- dosage and lamp power and decreasing initial dye concentration. Quenching experiments were performed with alcohols to determine the dominant radical. Under the conditions tested in this study, 98% and 70% decolorization and aromatic degradation efficiencies were obtained within 120 min of irradiation time, respectively. Decolorization and aromatic degradation efficiencies of RR239 in PS/UV-C and PMS/UV-C systems were evaluated in terms of electrical energy consumption per order by figure of merit approach.
Açıklama
Anahtar Kelimeler
azo dye, sulfate radical, decolorization, quenching, electrical energy consumption
Kaynak
Polish Journal of Environmental Studies
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
28
Sayı
5
