Decolourization of Congo Red Dye using Solar/H2O2 Process

Raja, R.; Venis, A. Rose; Selvan, R. Tamil; Mohandas, Twinkle Vinu

doi:10.14233/ajchem.2021.22924

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Similarly in the lower concentration of H 2 O 2 , production of hydroxyl radicals was lower and so there was a very lower concentration of hydroxyl radicals to react with an excess concentration of dye molecules to degrade them according to the following equations [8,[14][15][16][17]…”

Section: Effect Of Initial H 2 O 2 Concentrationmentioning

confidence: 99%

“…]. Similar results have been reported by A.Riga et al in the case of Procion H-exl dyes which were treated by TiO 2 /UV/ H 2 O 2 , Xuanmo Liu in the case of Reactive Black 5 dye treated by Fenton and Fenton-like system, Reza Marandi et al in the case of Reactive Black B dye treated by UV/ H 2 O 2 /biosorbent system, Hang Xu et al in case of Reactive Red SBE treated by Fenton process, Azam Aleboyeh et al in case of Acid Blue 74 treated by UV/ H 2 O 2 process, Fatima H.AlHamedi et al in case of Rhodamine B treated by UV/ H 2 O 2 process, Silvia Gabriela Schrank et al in case of Vat Green 01 dye treated by UV/ H 2 O 2 process, Raja et al in case of Reactive Red-180 by solar/ H 2 O 2 process, Raja et al in case of Congo Red by Solar/ H 2 O 2 process etc.,[7,8,10,12,14,[16][17][18][19].…”

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confidence: 99%

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Solar expedited photodegradation of orange-g using H2O2

Raja¹,

Venis²,

Kalaivanan³

et al. 2022

JOBM

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Decolourisation and degradation of azo dye Orange G was carried out by using the solarassisted photodegradation process using H2O2 and the effect of various parameters on decolourisation and degradation were analysed. Dye solutions of concentration 100 mg/L treated with 30% H2O2 were taken in 250 ml conical flasks and they were exposed to sunlight in the lux intensity range of 60,000 to 90,000 lux to study its decolourisation and degradation. Effect of various parameters on decolourisation and degradation of dye like the effect of initial pH, the effect of initial H2O2concentration, the effect of initial dye concentration, the effect of additives like chloride and dihydrogen phosphate of concentration 1 M, the effect of solar light intensity, the effect of temperature were studied as kinetic studies. Optimum pH was found to be 11 and optimum H2O2 concentration was found to be 250 mM to achieve 100 % decolourisation of the dye within the shortest time duration of 1.5 hours. Kinetic studies done on the effect of pH and the effect of H2O2 concentration also provided evidence for that. Effect of chloride ion has lead to enhancement in the rate of decolourisation whereas addition of dihydrogen phosphate ion inhibits the rate of decolourisation. An increase in solar light intensity has lead to increase in the rate of decolourisation. An increase in temperature has lead to increase in the rate of decolourisation. UV spectrum was taken for the dye and degraded dye to study the extent of degradation of the dye. COD and TOC removal were also studied to know about the mineralisation of the dye.

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Section: Effect Of Initial H 2 O 2 Concentrationmentioning

confidence: 99%

mentioning

confidence: 99%

Solar expedited photodegradation of orange-g using H2O2

Raja¹,

Venis²,

Kalaivanan³

et al. 2022

JOBM

Self Cite

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Kinetic Studies on Decolourization of Amaranth Dye by Solar/H2O2 Process

Raja

Venis

R³

et al. 2022

Orient. J. Chem

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Decolourisation of Anionic cum acidic azo dye Amaranth was carried out by an Advanced Oxidation Process Solar/H2O2. Dye samples of concentration 100 mg/L was taken in 250 ml conical flasks that were treated with 30% H2O2 and exposed to sun light in the intensity range of 60,000-90,000 lux. The impact of various parameters in decolourisation of dye like initial H2O2 concentration, initial dye concentration, initial pH, solar light intensity, additives and temperature was studied in view of kinetics. All the reactions carried out by the impact of system parameters follow pseudo-first order kinetics. Conditions were optimized, and the optimum pH was found to be 12 with an optimum H2O2 concentration of 650 mM to achieve 100% decolourization in 30 minutes. Impact of additives can be studied by adding chloride and dihydrogen phosphate ion of 1 M concentration. Then, mineralization is studied by COD removal. UV-visible spectrometric analysis is done to study degradation level.

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Decolourization of Congo Red Dye using Solar/H2O2 Process

Cited by 2 publications

References 15 publications

Solar expedited photodegradation of orange-g using H2O2

Solar expedited photodegradation of orange-g using H2O2

Kinetic Studies on Decolourization of Amaranth Dye by Solar/H2O2 Process

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