Effects of dye additives on the ozonation process and oxidation by-products: a comparative study using hydrolyzed C.I. Reactive Red 120

Zhang, Feifang; Yediler, Ayfer; Liang, Xinmiao; Kettrup, A.

doi:10.1016/s0143-7208(03)00111-6

Cited by 161 publications

(86 citation statements)

References 35 publications

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“…Due to the possible chloride interference on dye ozonation reaction, 9,11,14,15 some experiments were performed with O 3 and Cl -solutions, without the presence of Acid Black 1. For theses tests, chloride ion was supplied from either NaCl or HCl solutions (2.8×10 -4 mol L -1 ) and its concentration was monitored by IC and ISE techniques.…”

Section: Analysesmentioning

confidence: 99%

“…The possible interferences on ozonation efficiency by the presence of additives have been reported for the treatment of the dyes, 9,11,14,15 as well as for other class of compounds. 16,17 However, the available information concerning the role of these dye additives on the kinetics and by-product formation is scarce.…”

Section: Introductionmentioning

confidence: 99%

“…According to Lyon,21 these impurities present in dyes are: (i) diluents such as inorganic salts, starch and dispersing agents; (ii) by-products formed during manufacture and (iii) dyes of different constitution and color that are added for shading. Zhang and co-workers 14 investigated the effects of impurities on the ozonation degradation of the azo dye C.I. Reactive Red 120.…”

Section: Introductionmentioning

confidence: 99%

“…These authors compared the results obtained for unpurified (75%) and purified (90%) dyes, and concluded that the presence of impurities affects mostly the biodegradability of the dye. Zhang et al 14 also suggested that dyes need to be purified before ozonation treatment if detailed information on the oxidative processes and by-production formation are required.…”

Section: Introductionmentioning

confidence: 99%

“…9,11,14,15,18,19,22 When present as additive, at relatively high concentration (0.5-5 g L -1 ), Cl -seems to play an important role on dyes degradation processes. 9,11,15,18 The possible influence of the low chloride concentration (< 50 mg L -1 , as an impurity) on dye ozonation has not been reported in literature.…”

Section: Introductionmentioning

confidence: 99%

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Ozonation of azo dye acid black 1 under the suppression effect by chloride ion

Paprocki¹,

Santos²,

Hammerschitt³

et al. 2010

J. Braz. Chem. Soc.

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O objetivo deste estudo é determinar a cinética degradação do corante Acid Black 1 por ação oxidante do ozônio e avaliar a influência da contaminação de íons cloreto na degradação deste corante. Foram observadas cinéticas de pseudo-primeira ordem, tanto para a degradação das estruturas cromóforas (620 nm), quanto das aromáticas (321 nm). A completa remoção da coloração foi verificada em 25 min ([corante] 0 = 1,8 × 10 -5 mol L -1 ), enquanto que as estruturas aromáticas foram degradadas com menor velocidade. A presença de íon cloreto, principal impureza do reagente sólido, influencia significantemente a velocidade de ozonização (-42%), mesmo em baixa concentração (5,6 × 10 -4 mol L -1 ). O mecanismo mais provável para o efeito supressor do íon cloreto envolve a direta reação entre O 3 e Cl -gerando HOCl, dentre outros subprodutos. Apesar deste aspecto, a ozonização pode ser um processo de degradação competitivo para este corante.The aim of this study is to determine the kinetics of the Acid Black 1 dye by oxidizing action of ozone and to evaluate the influence of chloride ion contamination on the dye degradation. Pseudofirst order kinetics was observed for both decolorization (620 nm) and aromatic structure (321 nm) degradations. A complete color removal was verified in 25 min ([dye] 0 = 1.8 × 10 -5 mol L -1 ), while aromatic structures degraded at slower rates. The presence of chloride ion, the principal impurity of the solid dye reagents, influences significantly the ozonation rate (-42%), even at low chloride concentration (5.6 × 10 -4 mol L -1 ). The most probable mechanism for the chloride suppression effect involves a direct reaction between O 3 and Cl -generating HOCl, among other by-products. In despite of that, ozonation could be a competitive degradation process for this dye.

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Section: Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ozonation of azo dye acid black 1 under the suppression effect by chloride ion

Paprocki¹,

Santos²,

Hammerschitt³

et al. 2010

J. Braz. Chem. Soc.

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Advanced Oxidation Processes for Removal of Dyes from Aqueous Media

Atalay¹,

Ersöz²

2015

Green Chemistry for Dyes Removal From Wastewater

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Catalytic activity of a new Cd (II) complex in the peroxidation of cyclohexane and the resulting CdO nanoparticles in the removal of Congo red

Razmara

Karimi

Shahraki

et al. 2023

Applied Organom Chemis

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A new coordination complex of [Cd (2,2′‐bipyridine)(dipic) (H2O)2]. 7H2O (dipic2− = pyridine 2,6‐dicarboxylate) was synthesized under hydrothermal conditions. The crystal structure of Cd complex was characterized by X‐ray diffraction. The results confirmed that the coordination geometry of Cd2+ is a distorted pentagonal bipyramid. The complex was evaluated as a catalyst for the peroxidation of cyclohexane. The oxidation reaction was performed under mild conditions by hydrogen peroxide at room temperature. In the absence of HNO3, Cd complex exhibits a maximum yield of 31%. CdO nanoparticles were synthesized through thermal analysis of Cd complex and identified by various techniques. The ability of CdO nanoparticles was investigated for the removal of Congo red (CR). The effects of contact time, adsorbent dosage, and pH were evaluated using batch method. Studies have shown that the uptake process is pseudo‐second order. Also, the adsorption isotherm can be well fitted by the Langmuir model, while this process is spontaneous.

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Effects of dye additives on the ozonation process and oxidation by-products: a comparative study using hydrolyzed C.I. Reactive Red 120

Cited by 161 publications

References 35 publications

Ozonation of azo dye acid black 1 under the suppression effect by chloride ion

Ozonation of azo dye acid black 1 under the suppression effect by chloride ion

Advanced Oxidation Processes for Removal of Dyes from Aqueous Media

Catalytic activity of a new Cd (II) complex in the peroxidation of cyclohexane and the resulting CdO nanoparticles in the removal of Congo red

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