Microbial decolorization of synthetic dyes and reactive dyes of industrial effluents by using a novel fungus Aspergillus proliferans

Paulraj Kanmani, R. Satish Kumar, N. Yuvaraj, K. A. Paari, V. Pattukumar, Venkatesan Arul

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    A decolorizing fungal strain was isolated and identified by the morphology and genotypic characterization as Aspergillus proliferans. The effect of A. proliferans on decolorization of synthetic dyes (70mg ml-1) and colored effluent was evaluated in liquid culture medium. A. proliferans expressed their effective decolorization activity in effectual decolorization of synthetic dyes and industrial effluent. Synthetic dyes were decolorized by 76 to 89% within 6 days of treatment and 73.5% of color was removed in industrial effluent within 8 days. The addition of optimum carbon and nitrogen sources were effectively stimulated the decolorization activity. The high concentration of glucose repressed the decolorization activity and supplementation of yeast extract has significantly enhanced the effluent decolorization at p < 0.05. Laccase enzyme was isolated from liquid state fermentation, which showed significant enzyme activity (10,200 Uml-1) at p < 0.005. The crude enzyme decolorizes the dyes aniline blue and congo red in 14 hours (40.9 to 70%) and the effluent in 14 hours (88.6%). Moreover, the culture free supernatant without the fungal biomass has also effectively decolorized the effluent and synthetic dyes. The fungi Aspergillus proliferans was used not only for decolorization but also for better bioremediation of industrial effluent.

    Original languageEnglish
    Pages (from-to)2099-2106
    Number of pages8
    JournalWater Environment Research
    Volume83
    Issue number11
    DOIs
    Publication statusPublished - 2011 Nov

    Keywords

    • Aspergillus proliferans
    • Azo dyes
    • Decolorization
    • Effluent
    • Liquid state fermentation

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Ecological Modelling
    • Water Science and Technology
    • Waste Management and Disposal
    • Pollution

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