Degradation of a textile azo dye using biological treatment followed by photo-Fenton oxidation: Evaluation of toxicity and microbial community structure

Punzi, Marisa; Anbalagan, Anbarasan; Börner, Rosa Aragão; Svensson, Britt-Marie; Jonstrup, Maria; Mattìasson, Bo

doi:10.1016/j.cej.2015.02.042

Cited by 217 publications

(77 citation statements)

References 40 publications

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“…Such dye molecules are difficult to be decomposed by natural means. Various methods, such as adsorption [6], advanced oxidation processes [7], biological treatment [8], electrocatalysis [9] and photocatalysis [10], have been developed to remove organic dyes. Among them, photocatalytic degradation of organic pollutants receives increasing interest owing to the absence of secondary pollution and the low cost by using solar light.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Xiao-min

Huang

Gao

et al. 2016

Journal of Alloys and Compounds

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a b s t r a c tIn this work, Bi 2 S 3 /SnS 2 heterojunction photocatalysts were prepared by combining a hydrothermal technique and a facile in situ growth method. The nanocomposites were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma spectroscopy, X-ray photoelectron spectroscopy, UVeVis diffusion reflectance spectroscopy and roomtemperature photoluminescence spectra. Their photocatalytic performances were evaluated by degrading methyl orange (MO) in aqueous solution (50 mg/L) under visible light (l > 420 nm) irradiation. It was found that when the mass percentage of Bi 2 S 3 in Bi 2 S 3 /SnS 2 was 7.95 wt%, the as-prepared Bi 2 S 3 / SnS 2 nanocomposite showed the best photocatalytic activity for the degradation of MO. The highly improved performance of the Bi 2 S 3 /SnS 2 nanocomposite was mainly ascribed to the efficient charge separation.

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Xiao-min

Huang

Gao

et al. 2016

Journal of Alloys and Compounds

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“…The toxicity tests were performed using the nauplii of the brine shrimp A. salina as a quick, simple, and inexpensive test, which provides a good indication of the acute toxicity for several compounds and is widely used to determine the toxicity of dyes (PRASAD; RAO, 2013;IQBAL & BHATTI, 2014;PUNZI et al, 2015). The results obtained in this study showed that the decolorization products reached a lethal concentration (LC 50 ) at 17.45%.…”

Section: Biotoxicity Testsmentioning

confidence: 88%

“…Assays were performed in 250-mL Erlenmeyer flasks containing 50 mL of NDM at varying culture conditions: the dye concentration (100-500 ppm), glucose concentration (0-5%), pH (3)(4)(5)(6)(7)(8), and temperature (20-40 ºC). After incubation at 150 rpm for 24 h, 2-mL aliquots were taken from the flasks and centrifuged at 5,000 rpm for 10 min.…”

Section: Decolorization Assaysmentioning

confidence: 99%

Aerobic decolorization of azo dye orange g by a new yeast isolate Candida cylindracea SJL6

Alcântara¹,

Oliveira²,

Evangelista-Barreto³

et al. 2017

Biosci. J.

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Biodecolorization of the azo dye Orange G was investigated using a new strain of Candida cylindracea SJL6, isolated from freshwater samples of the Subaé river in Bahia state, Brazil. Strain SJL6 was identified as C. cylindracea on the basis of 26S rDNA region. The various parameters of dye decolorization and cell growth were studied, including the Orange G dye concentration (100 to 500 ppm), temperature (20 to 40 °C), glucose concentration (0 to 5%), and initial pH (3 to 8). Biotoxicity tests were performed using shrimp (Artemia salina) to determine the lethal concentration (LC 50 ) and onion bulbs (Allium cepa) to determine the cytotoxic and genotoxic effects of both Orange G dye and metabolites formed after decolorization. Up to 90% of decolorization of the Orange G dye at 500 ppm was achieved by C. cylindracea SJL6 at 30 °C, pH 3, and 1% glucose. However, the biotoxicity tests showed that there was increased toxicity after decolorization, suggesting partial Orange G dye degradation and production of toxic metabolites.

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“…These dyes are considered an environmental problem, since they strongly absorb sunlight hindering the photosynthesis and water oxygenation (Chequer et al 2013). In addition, highly recalcitrant compounds are resistant to decomposition under action of natural sunlight and chemical oxidants (Bafana et al 2011;Punzi et al 2015a). Many of the azo dyes are toxic to aquatic environment and human heath (Brillas and Martinez-Huitle 2015), carcinogenic (de Lima et al 2007), mutagenic (Chequer et al 2011), genotoxic (Chequer et al 2009), cytotoxic (Ferraz et al 2011), estrogenic, and anti-estrogenic (Bazin et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

Marson

Paiva

Gonçalves

et al. 2016

Environ Sci Pollut Res

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The role of different operational parameters related to Fenton reactions (pH, concentration of Fe and HO, and reaction time) and of Cl and SO was investigated in the degradation of the azo dye Direct Red 81, expressed in terms of its decolorization. The factorial design and Pareto's charts showed that only Fe concentration and pH influence the decolorization under the conditions evaluated. So, only these parameters were optimized using the response surface model. Under the best experimental conditions (initial pH 2.5, 11 mg L Fe, 78 mg L HO, and 20 min of reaction), 94 % of decolorization was achieved. However, even under the these conditions, but in the presence of Cl and SO , a striking loss of efficiency was observed as the concentration of these ions was increased, due the formation of chloride- and sulfate-iron complexes and less reactive inorganic radicals (Cl and SO). The results show that the presence of Cl is more deleterious, since sulfate-iron complexes are more reactive towards HO, and the SO turns out to favor the degradation. On the other hand, the negative effect of Cl can be compensated by increasing the chloride concentration up to 300 mmol L. In addition, although a high degradation level has been obtained by monitoring the dye absorbance and by HPLC-UV, a low mineralization occurred, being generated degradation products of higher ecotoxicity to Vibrio fischeri, showing the need of subsequent studies to identify these compounds as well as the application of additional treatments aiming the complete mineralization of the dye.

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Degradation of a textile azo dye using biological treatment followed by photo-Fenton oxidation: Evaluation of toxicity and microbial community structure

Cited by 217 publications

References 40 publications

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Aerobic decolorization of azo dye orange g by a new yeast isolate Candida cylindracea SJL6

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

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