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01.09.2015 | Original Article | Ausgabe 3/2015

Sustainable Water Resources Management 3/2015

Evaluation of the efficacy of a fungal consortium for degradation of azo dyes and simulated textile dye effluents

Zeitschrift:
Sustainable Water Resources Management > Ausgabe 3/2015
Autoren:
Samta Saroj, Swati Dubey, Pragati Agarwal, R. Prasad, R. P. Singh
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s40899-015-0027-2) contains supplementary material, which is available to authorized users.

Abstract

Azo dyes are widely prevalent environmental contaminants that are recalcitrant to biodegradation processes and have detrimental biological effects. Hence, exploring the novel microbial agents and to develop ecofriendly cost-effective process is pertinent for treatment of textile effluents. A fungal consortium comprising three strains Penicillium oxalicum SAR-3, Aspergillus niger SAR-6 and Aspergillus flavus SAB-3 has been developed. The consortium exhibited remarkably high potential to degrade azo dyes (Acid Red 183, Direct Blue 15 and Direct Red 75) at various initial concentrations. The consortium used was found to decolorize all the three dyes almost completely at lower initial concentrations (200–400 mg L−1). The consortium was able to effectively decolorize simulated textile wastewater. UV–Visible and FTIR spectroscopic analysis had denoted the degradation of dyes. Furthermore, toxicity analysis of metabolites generated following degradation had shown significant reduction in the toxicity of dyes.

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Zusatzmaterial
Supplementary material 1 (JPEG 74 kb) Supplementary Fig. 1. UV–Vis spectral analysis during decolorization of (a), AR 183; (b), DB 15 and (c), DR 75 by consortium
40899_2015_27_MOESM1_ESM.jpg
Supplementary material 2 (JPEG 159 kb) Supplementary Fig. 2. FTIR spectra of products extracted with ethyl acetate formed following degradation of AR 183 (a, control; b, products); DB 15 (c, control; d, products) and DR 75 (e, control; f, products) by consortium
40899_2015_27_MOESM2_ESM.jpg
Supplementary material 3 (JPEG 93 kb) Supplementary Fig. 3. FTIR spectra of (a), mixture of AR183, DB 15, DR75 and products extracted with ethyl acetate formed after degradation of simulated wastewater by (b), P. oxalicum SAR-3 alone and (c), by consortium
40899_2015_27_MOESM3_ESM.jpg
Supplementary material 4 (DOCX 64 kb)
40899_2015_27_MOESM4_ESM.docx
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