Oxidative removal of brilliant green by UV/S2O82‒, UV/HSO5‒ and UV/H2O2 processes in aqueous media: A comparative study

Rehman, Fahad; Sayed, Murtaza; Khan, Javed Ali; Shah, Noor S.; Khan, Hasan M.; Dionysiou, Dionysios D.

doi:10.1016/j.jhazmat.2018.06.012

Cited by 178 publications

(42 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…•radical [36]. These results obtained in our study was in agreement with literature [37]. In order to investigate the effect of initial pH on degradation, A pH of the dye solution was also change from 3 to 9.…”

Section: Uv/ Pms(hso 5 − )/Fe 2+ Processsupporting

confidence: 92%

Inquest of efficient photo-assist advanced oxidation processes (AOPs) for removal of azo dye (acid yellow 17) in aqueous medium: a comprehensive study on oxidative decomposition of AY 17

Tariq

Khan

2020

SN Appl. Sci.

View full text Add to dashboard Cite

In this study, the photo-assist degradation of acid yellow (AY 17) dye is reported in detail by applying various UV radiation supported advanced oxidation processes (AOPs). The AY 17 dye in water solution (model and natural) is decomposed by direct photolysis, UV/oxidant, photo-Fenton, photo-Fenton-like, UV/HSO 5-/Fe 2+ , and UV/S 2 O 8 2− /Fe 2+ system. All applied processes are found to be the comparably effective at pH 3.0. It is observed that the efficiency of AY 17 degradation increased with the initial concentration of the oxidants (H 2 O 2 , HSO 5 and S 2 O 8 2-) and catalyst (Fe 2+ and Fe 3+). Moreover, the initial concentration of the dye solution has inverse effect on the efficiency of applied AOPs. It is also reported that decomposition of dye through photo-assist AOPs followed pseudo-first-order kinetic while the efficiency of all processes increased with temperature. The activation energy (E a) has been determined in the range of between 10 to 20 kJ/mol. The entropy of degradation is also calculated and has found to be positive. Finally, it is concluded that photo-Fenton process (UV/H 2 O 2 /Fe 2+) is comparably more efficient method for the removal of AY 17 dye from natural water sample.

show abstract

Section: Uv/ Pms(hso 5 − )/Fe 2+ Processsupporting

confidence: 92%

Inquest of efficient photo-assist advanced oxidation processes (AOPs) for removal of azo dye (acid yellow 17) in aqueous medium: a comprehensive study on oxidative decomposition of AY 17

Tariq

Khan

2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…The concentration and type of the oxidant in the AOP prominently affects the degradation of the contaminants (Zarei et al, ), while the pH of the reaction system influences the properties of the contaminant and the photocatalyst (Daghrir, Drogui, & El Khakani, ). Inorganic anions present in the ground and surface water resources were also reported to influence the degradation efficiency of UV/chlorine and UV/PS processes (Huang, Wang, Xu, Wu, & Hu, ; Rehman et al, ). Although humic acid (HA) has been reported to impact photodegradation of organic compounds (Carlos et al, ), few studies have evaluated the influence of HA in UV‐based AOPs (Tan et al, ).…”

Section: Introductionmentioning

confidence: 99%

Comparison of ciprofloxacin degradation in reclaimed water by UV/chlorine and UV/persulfate advanced oxidation processes

Yang

Chen

et al. 2019

Water Environment Research

View full text Add to dashboard Cite

This study analyzed the ciprofloxacin (CIP) degradation in real reclaimed water through UV/chlorine and UV/persulfate (UV/PS) advanced oxidation processes. The influence of oxidant dosage, pH, inorganic anions, and humic acid (HA) on the oxidation capacity and performances of various UV‐based processes was investigated. The results revealed that the CIP degradation rate constants in the UV/chlorine and UV/PS processes were higher than that in UV/H2O2, direct‐UV, NaClO, and K2S2O8 processes. The removal rate peaked at 0.1 mM oxidant dosage for 1 μM CIP, while the rate constant was highest at pH 5 (UV/chlorine) and pH 7 (UV/PS). The presence of Cl−, HCO3−, and HA inhibited CIP removal in both processes. The degradation rate observed in reclaimed water was high, but still lower than that in laboratory water by 9.2 (UV/chlorine) and 9 (UV/PS) times. The UV/chlorine and UV/PS processes were found to be more cost‐effective and hence more feasible in removing refractory compounds in reclaimed water. Practitioner points The addition of oxidant and UV irradiation together had a pronounced promotion in the degradation of CIP. Cl· and SO4·− had potential importance for enhancing CIP degradation in UV/chlorine and UV/PS process, respectively. UV/chlorine and UV/PS processes exhibited effective removal capability to CIP in real reclaimed water.

show abstract

“…22 In general, both the positive and negative impact of bicarbonate and carbonate on the performances of advanced oxidation processes have been reported in the literature. 36,37 The negative effect was mainly ascribed to the scavenging action of the anions to the main oxidizing species, whereas the role of carbonate radicals was emphasized to explain the positive influence of carbonate/ /bicarbonate. The effect of carbonate and bicarbonate anions on the removal efficiency of RB 19 dye was studied at different concentrations (0, 10, 20, 50, 100 and 200 mmol•L -1 ).…”

Section: Influence Of Inorganic Anionsmentioning

confidence: 99%

Sulfate radicals-based degradation of antraquinone textile dye in a plug flow photoreactor

Mitrović

Vučić

Kostić

et al. 2019

JSCS

View full text Add to dashboard Cite

The study evaluated the degradation of the antraquinone textile dye reactive blue 19, a frequently used dye in the textile industry, by means of sulfate radicals. Sulfate radicals were generated by activation of peroxydisulfate with UV-C (254 nm) irradiation. UV irradiation alone did not affect the removal efficiency, while with the addition of an oxidant, the removal efficiency was significantly improved. The degradation rates of the textile dye increased at higher initial dosages of oxidant, while the opposite trend was observed in the case of increasing initial dye concentration. Acidic conditions were more convenient for degradation of the dye then neutral or basic. Degradation of the textile dye was not affected by the presence of bicarbonate and chloride anions within the concentrations range from 1 to 200 mmol•L-1. The presence of carbonate showed a suppressing effect on the removal efficiency, especially at carbonate levels below 20 mmol•L-1. However, at carbonate levels greater than 20 mmol•L-1 , the dye removal efficiency increased. The use of methanol and tert-butanol as scavengers revealed that both radicals, HO • and SO 4 •-, would be generated depending on initial pH value of the dye solution.

show abstract

Oxidative removal of brilliant green by UV/S2O82‒, UV/HSO5‒ and UV/H2O2 processes in aqueous media: A comparative study

Cited by 178 publications

References 44 publications

Inquest of efficient photo-assist advanced oxidation processes (AOPs) for removal of azo dye (acid yellow 17) in aqueous medium: a comprehensive study on oxidative decomposition of AY 17

Inquest of efficient photo-assist advanced oxidation processes (AOPs) for removal of azo dye (acid yellow 17) in aqueous medium: a comprehensive study on oxidative decomposition of AY 17

Comparison of ciprofloxacin degradation in reclaimed water by UV/chlorine and UV/persulfate advanced oxidation processes

Sulfate radicals-based degradation of antraquinone textile dye in a plug flow photoreactor

Contact Info

Product

Resources

About