Effect of textile auxiliaries on the biodegradation of dyehouse effluent in activated sludge

Alaton, İdil Arslan; İnsel, Güçlü; Eremektar, Gülen; Babuna, Fatoş Germirli; Orhon, Derin

doi:10.1016/j.chemosphere.2005.06.010

Cited by 46 publications

(13 citation statements)

References 16 publications

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“…Chemical structure of dimethoate, active species of the commercial pesticide Laition. they are expected to predict more reliably the real biodegradation of the effluents [10].…”

Section: Introductionmentioning

confidence: 99%

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Arqués

Amat

García-Ripoll

et al. 2007

Journal of Hazardous Materials

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“…Chemical structure of dimethoate, active species of the commercial pesticide Laition. they are expected to predict more reliably the real biodegradation of the effluents [10].…”

Section: Introductionmentioning

confidence: 99%

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Arqués

Amat

García-Ripoll

et al. 2007

Journal of Hazardous Materials

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“…[3][4][5] Physical treatment methods tend to simply transfer the pollutant to a different phase and biological methods can be prolonged and are not always efficient in removing color. Chemical methods are interesting as they are often capable of removing color and can include such techniques as oxidation by ozone, UV radiation, 7 hydrogen peroxide, 8 hypochlorite, 9 Fenton's reagent 10 and activated sludge 11 amongst others. Recently, there has been growing interest in the use of electrochemical techniques in the treatment of pollutants 12 including textile dyes.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical degradation of the dye reactive orange 16 using electrochemical flow-cell

Gomes¹,

Miwa²,

Malpass³

et al. 2011

J. Braz. Chem. Soc.

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As remoções eletroquímicas de cor e do conteúdo orgânico de soluções do corante laranja reativo 16 (RO16) foram efetuadas usando uma célula em fluxo e um eletrodo de trabalho de Pt. As influências das variáveis do sistema, tais como fluxo, concentração de NaCl, potencial aplicado e pH da solução, foram estudadas. A melhor remoção de cor foi de 93% (l = 493 nm) após 60 min de eletrólise potentiostática a 2,2 V vs. ERH, usando 1,00 g L -1 NaCl como eletrólito suporte. Os aumentos na concentração de NaCl e do potencial aumentam a velocidade de remoção de cor. A melhor remoção de carbono orgânico total (57%) foi obtida com a aplicação de 1,8 V, sem membrana de separação, indicando que as melhores condições para remoção de cor não são necessariamente as melhores para remover conteúdo orgânico. A eficiência de degradação diminui com a diminuição do pH da solução.Electrochemical removals of color and organic load from solutions containing the dye reactive orange 16 (RO16) were performed in an electrochemical flow-cell, using a platinum working electrode. The influence of the process variables flow-rate, such as NaCl concentration, applied potential and solution pH, were studied. The best color removal achieved was 93% (l = 493 nm) after 60 min at 2.2 V vs. RHE electrolysis, using 1.00 g L -1 NaCl as supporting electrolyte. The rises in the concentration of NaCl and applied potential increased the color removal rate. The best total organic carbon removal (57%) was obtained at 1.8 V, without the separating membrane, indicating that the ideal conditions for the color removal are not necessarily the same as those to remove the total organic carbon. The degradation efficiency decreased with the solution pH decrease.Keywords: decolorization, textile effluent, electrochemical degradation, reactive dye, Pt electrode IntroductionWhen untreated textile effluents are discharged into receiving water bodies many environmental problems can occur. The principal problems are that the presence of dyes (even at concentrations of < 1 ppm) that can cause considerable coloration in water courses, affect transparency to natural light (reducing photosynthesis), reduce gas solubility and may also present carcinogenic and mutagenic properties. 1,2Wide varieties of dyes are used in the textile industry and can be classified according to the manner in which they are fixed to the textile fiber (e.g., direct, reactive) or by their chemical structure (e.g., azo, anthraquinone). In the textile industry, reactive dyes are widely used due to their relatively easy application in the dyeing process and stability during wear. As a result of this stability, reactive dyes may require more complicated systems to achieve their removal from effluent flows. A number of methods presented in the literature are traditionally used to treat textile effluent and they are generally based on physical, chemical and biological treatments.3-5 Physical treatment methods tend to simply transfer the pollutant to a different phase and biological methods can be prolonged and ...

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“…1 A large percentage of the total emission load is attributable to salts, detergents and organic acids applied during the process with a mean value of 46%, 5% and 4%, respectively. 2 Although dyestuffs do not represent a significant load in comparison, they are responsible for the colour of the effluent, and concentrations as low as 1 mg L −1 can give rise to public complaint.…”

Section: Introductionmentioning

confidence: 99%

Effect of dye auxiliaries on the kinetics of advanced oxidation UV/H₂O₂ of Acid Orange 7 (AO7)

Anglada

Rivero

Ortíz

et al. 2008

J of Chemical Tech & Biotech

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BACKGROUND: The effect of four dye-auxiliary chemicals, typically employed in acid dyeing, on the performance of UV/H 2 O 2 decolouration of the model non-biodegradable dye C.I. Acid Orange 7 (AO7) was investigated. The initial concentration of AO7 was 0.150 g L −1 , while the concentration of the auxiliary compounds (NaCl, Na 2 SO 4 , Na 2 CO 3 and CH 3 COOH) was varied in the range 1-10 g L −1 .

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Effect of textile auxiliaries on the biodegradation of dyehouse effluent in activated sludge

Cited by 46 publications

References 16 publications

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Electrochemical degradation of the dye reactive orange 16 using electrochemical flow-cell

Effect of dye auxiliaries on the kinetics of advanced oxidation UV/H₂O₂ of Acid Orange 7 (AO7)

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Effect of textile auxiliaries on the biodegradation of dyehouse effluent in activated sludge

Cited by 46 publications

References 16 publications

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Detoxification and/or increase of the biodegradability of aqueous solutions of dimethoate by means of solar photocatalysis

Electrochemical degradation of the dye reactive orange 16 using electrochemical flow-cell

Effect of dye auxiliaries on the kinetics of advanced oxidation UV/H2O2 of Acid Orange 7 (AO7)

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Effect of dye auxiliaries on the kinetics of advanced oxidation UV/H₂O₂ of Acid Orange 7 (AO7)