Decolorization of Sunzol Black DN conc. in aqueous solution by Fenton oxidation process: effect of system parameters and kinetic study

Daud, N.K.; Akpan, U.G.; Hameed, B.H.

doi:10.1080/19443994.2012.661246

Cited by 44 publications

(18 citation statements)

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“…Various techniques have been used for the removal of dyes from the aqueous medium like biodegradation and photocatalytic degradation. Reviewing the available literature indicated that the biodegradation method cannot be used to degrade azo dyes [34]. Researchers show inclination towards photocatalytic degradation these days because the reactions are carried out under ambient conditions.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles

Ravishankar

Manjunatha

Ramakrishnappa

et al. 2014

Materials Science in Semiconductor Processing

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Section: Introductionmentioning

confidence: 99%

Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles

Ravishankar

Manjunatha

Ramakrishnappa

et al. 2014

Materials Science in Semiconductor Processing

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“…The inhibition effect by CO 2À 3 and HCO À 3 is due to the scavenging of hydroxyl radicals [27] to produce carbonate radicals according to Eqs. (23) and (24). The carbonate radicals, having much lower oxidation potential (1.85 V) than hydroxyl radicals (2.80 V) are obviously less reactive and hence are responsible to bring down the decoloration to a great extent.…”

Section: Effect Of Inorganic Anionsmentioning

confidence: 99%

“…There is a slow increase in decoloration when the concentration of HP is increased up to 1.08 mM, beyond which it remains practically unchanged. This is probably due to the scavenging of hydroxyl radicals [24] as soon as they are formed beyond a certain limit (Eqs. (9)-(11)).…”

Section: Effect Of Oxidant Dosagementioning

confidence: 99%

Removal of Acid Blue 29 in aqueous solution by Fenton and Fenton-like processes

Sahoo

Sayoo

2014

Desalination and Water Treatment

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A B S T R A C TThe decoloration and mineralization of the azo dye, Acid Blue 29 (AB 29) in aqueous solution was investigated in the presence and absence of air by Fenton and Fenton-like processes using hydrogen peroxide (HP) and sodium persulfate (SPS), respectively, as oxidants. The effect of various operational parameters and presence of Cl À , CO 2À 3 , HCO À 3 , and SO 2À 4 ions on the decoloration was examined. Higher decoloration was observed at pH 3 and 5 in both the cases. On the basis of mineralization efficiency (34.1 and 28.5%, respectively, with HP and SPS in 180 min), it was concluded that HP is a better oxidant than that of SPS. The decoloration in the absence of air is decreased until a certain time period, beyond which it increases and becomes same as that in the presence of air. This is explained on the basis of in situ generation of HP and peroxyl radicals. Although all ions under study inhibit decoloration significantly, the inhibition efficiency of SO 2À 4 is less than that of others.

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“…En promedio, al año se producen 8x10 5 toneladas métricas de colorantes, de los cuales el 50% son del grupo químico azo (Bouasla, Ismail, & Samar, 2012). En Malasia el 22% del volumen total de aguas residuales corresponde a la industria textil (Daud, Akpan, & Hameed, 2012), las cuales contienen colorantes azoicos, considerados cancerígenos y mutagénicos (Grekova-Vasileva & Topalova, 2014). Para su remediación, existen algunos métodos como la oxidación avanzada y biofiltración.…”

Section: Contaminación Industrialunclassified

Coagulación natural para la descontaminación de efluentes industriales

et al. 2016

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La contaminación industrial y agrícola ha generado indudablemente un alto impacto ambiental en los recursos naturales de nuestro planeta. Se prevé carencias en la provisión de agua para consumo humano debido a la contaminación de fuentes naturales. En respuesta a esto, la aplicación de coagulantes de hierro y aluminio son la primera opción para el tratamiento de aguas residuales. No obstante, el uso abundante de aluminio es objeto de discusión debido a la posible afectación al ser humano. Por tanto, el presente artículo destaca los últimos avances en el campo de la coagulación natural, una tecnología ancestral utilizada para la descontaminación del agua. Su demostrada efectividad se fundamenta en mecanismos de desestabilización electrocinética que remueven la turbidez hasta un 99%. Evidencias experimentales coinciden que concentraciones de taninos y mucílagos permiten la remediación de efluentes de industrias químicas como textileras y de curtiembres.

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Decolorization of Sunzol Black DN conc. in aqueous solution by Fenton oxidation process: effect of system parameters and kinetic study

Cited by 44 publications

References 0 publications

Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles

Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles

Removal of Acid Blue 29 in aqueous solution by Fenton and Fenton-like processes

Coagulación natural para la descontaminación de efluentes industriales

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