Improved conditions for the aerobic reductive decolourisation of azo dyes by Candida zeylanoides

Ramalho, Patrícia A.; Scholze, Horst; Cardoso, María Helena Cabral de Almeida; Ramalho, Maria Teresa; Oliveira‐Campos, Ana M. F.

doi:10.1016/s0141-0229(02)00189-8

Cited by 78 publications

(54 citation statements)

References 30 publications

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“…Within 16-48 h of incubition the color disappeared completely without residual color on the biomass in the case of only one of these dyes, the Reactive Black 5. The metabolic profile species-specific, such as enzymatic activity (Ramalho et al, 2005;Martorell et al, 2012), media culture (Ramalho et al, 2002;Kaushik and Malik, 2010) and the structure complexity of the dye (Fu and Viraraghavan, 2001;Bergsten-Torralba et al, 2009) can greatly influence the final response of fungal degradation. In the present work, C. rugosa INCQS 71011 was much more efficient degrading RR198, a single azo class dye, than it was towards RR 141, a double azo class dye, which took longer to be degraded and towards RB 241, another double azo class dye, which was not completely degraded under the conditions established in this study.…”

Section: Discussionmentioning

confidence: 99%

Textile azo dye degradation by Candida rugosa INCQS 71011 isolated from a non-impacted area in Semi-Arid Region of Brazilian Northeast

Nascimento¹,

Nishikawa²,

Vaz³

et al. 2013

Afr. J. Biotechnol.

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The yeast Candida rugosa, deposited in the Collection of Reference Microorganisms on HealthSurveillance from Oswaldo Cruz Foundation under accession number INCQS 71011, was isolated from a sediment sample from Caldeirão Escuridão, a pristine water reservoir in the surroundings of Serra da Capivara National Park, and was identified based on molecular, physiological and morphological characterization. In addition, it was tested regarding its capacity to degrade three textile azo dyes, namely Reactive Red 198, Reactive Red 141, and Reactive Blue 214 at a concentration of 100 mg l -1 during 7 days of incubation. C. rugosa INCQS 71011 was highly efficient towards two azo dyes tested, Reactive Red 198 and Reactive Red 141, demonstrating potential as a biological treatment agent of textile effluent. These results are pioneers for the yeast C. rugosa, since its degradation capacity of textile azo dyes has not yet been described. In addition, this study provides important evidence that fungi from non-impacted areas can efficiently degrade azo dyes.

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Section: Discussionmentioning

confidence: 99%

Textile azo dye degradation by Candida rugosa INCQS 71011 isolated from a non-impacted area in Semi-Arid Region of Brazilian Northeast

Nascimento¹,

Nishikawa²,

Vaz³

et al. 2013

Afr. J. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…The use of non-conventional, economical sources as precursors for activated carbon has been proposed to achieve the cost-effectiveness in the application. As previously stated, adsorption is a non-destructive method in which there is only the change in the phase of the removed impurities and, therefore impose further problems in the form of sludge [121][122][123][124]. The high cost also necessitates the adsorbent regeneration.…”

Section: Sonolysis Processmentioning

confidence: 99%

Industrial Wastewater Treatment: A Challenging Task in the Industrial Waste Management

Mp¹

2017

Adv Recycling Waste Manag

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“…Récemment, RAMALHo et al (2002) ont testé la souche de levure Candida zeylanoides pour réduire des colorants azoïques modèles. En 2004, cette même équipe a pu caractériser l'activité enzymatique responsable de la dégradation des colorants azoïques chez Issatchenkia occidentalis et présenter un an plus tard le système enzymatique d'azoréduction impliqué dans un travail avec Saccharomyces cerevisiae (RAMALHo, 2005).…”

Section: Décoloration Par Les Levuresunclassified

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

Mansour¹,

Boughzala

Dridi

et al. 2011

rseau

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Les colorants sont largement utilisés dans les imprimeries, les produits alimentaires, cosmétiques et cliniques, mais en particulier dans les industries textiles pour leur stabilité chimique et la facilité de leur synthèse et leur variété de couleurs. Cependant, ces colorants sont à l’origine de la pollution une fois évacués dans l’environnement. La production mondiale des colorants est estimée à plus de 800 000 t•an-1 et les colorants azoïques sont majoritaires et représentent 60-70 %. Compte tenu de la composition très hétérogène de ces derniers, leur dégradation conduit souvent à la conception d’une chaîne de traitement physique-chimique et biologique assurant l’élimination des différents polluants par étapes successives. Dés études ont montré que plusieurs colorants azoïques sont toxiques et mutagènes et le traitement biologique de ces colorants semble présenter un intérêt scientifique majeur. Les traitements physico-chimiques communs (adsorption, coagulation/floculation, précipitation etc.) sont couramment utilisés pour les effluents industriels. Malgré leur rapidité, ces méthodes se sont avérées peu efficaces compte tenu des normes exigées sur ces rejets. Le traitement biologique constitue une alternative fiable; en effet, plusieurs microorganismes sont capables de transformer les colorants azoïques en sous-produits incolores. Les bactéries dégradent les colorants azoïques en deux étapes : un clivage de liaison azo, par l’intermédiaire de l’azoréductase, suivi d’une oxydation des amines aromatiques formées lors de la première étape. L’azoréduction constitue alors une étape clé du traitement des effluents chargés de ces colorants.Dyes are widely used for industrial, printing, food, cosmetic and clinical purposes as well as textile dyeing because of their chemical stability, ease of synthesis, and versatility. Their stability, however, causes pollution once the dyes are released into the environment in effluents. More than 800,000 tons of dyes are annually produced worldwide, of which 60 to 70% are azo dyes. Considering the heterogeneous composition of these latter dyes, their degradation usually requires a chain of physical, chemical and biological treatments assuring the elimination of different pollutants in successive steps. In addition, some azo dyes are toxic and mutagenic and thus the biological treatment of these dyes is now of major scientific interest. Physical-chemical treatments (adsorption, coagulation/flocculation precipitation, etc.) are usually used for industrial effluents. In spite of their rapidity, these methods have turned out to be ineffective in attaining the standards required for these discharges. As a viable alternative, biological processes are receiving increasing interest owing to their cost effectiveness and their ability to produce less sludge. It has been found that some microorganisms can transform azo dyes into colourless products. Bacterial degradation of azo dyes is often initiated by an enzymatic biotransformation step that involves cleavage of azo linkages with the aid of...

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Improved conditions for the aerobic reductive decolourisation of azo dyes by Candida zeylanoides

Cited by 78 publications

References 30 publications

Textile azo dye degradation by Candida rugosa INCQS 71011 isolated from a non-impacted area in Semi-Arid Region of Brazilian Northeast

Textile azo dye degradation by Candida rugosa INCQS 71011 isolated from a non-impacted area in Semi-Arid Region of Brazilian Northeast

Industrial Wastewater Treatment: A Challenging Task in the Industrial Waste Management

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

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