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Process optimization for efficient dye removal by Aspergillus lentulus FJ172995.

Prachi Kaushik1, Anushree Malik

  • 1Applied Microbiology Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.

Journal of Hazardous Materials
|October 26, 2010
PubMed
Summary

This study optimized dye removal using Aspergillus lentulus FJ172995, achieving 99.97% efficiency. Urea and glucose levels were key factors for dye removal and biomass production, respectively.

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Area of Science:

  • Environmental Microbiology
  • Biotechnology
  • Wastewater Treatment

Background:

  • Textile dyes pose environmental risks.
  • Bioremediation offers a sustainable solution for dye removal.
  • Aspergillus lentulus FJ172995 shows potential for dye decolorization.

Purpose of the Study:

  • To optimize conditions for maximum dye removal by Aspergillus lentulus FJ172995.
  • To investigate the influence of glucose, urea, and initial dye concentration on dye removal and biomass production.
  • To model the interactions between process variables and their effects on bioremediation efficiency.

Main Methods:

  • Response surface methodology (RSM) with a central composite design (CCD).
  • Optimization of three variables: glucose, urea, and initial dye concentration.

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  • Monitoring of two responses: dye removal efficiency and biomass production.

    • Main Results:

    • Urea significantly influenced dye removal, while glucose was crucial for biomass production.
    • Initial dye concentration negatively impacted dye removal efficiency.
    • Optimal conditions yielded 99.97% dye removal and 97.54 mg/g uptake capacity within 24 hours.

    Conclusions:

    • Bioremediation using Aspergillus lentulus FJ172995 is highly effective for dye removal.
    • Nutrient supplementation (urea and glucose) is critical for enhancing dye removal and biomass production, especially for high-dye-concentration effluents.
    • Optimized RSM parameters provide a robust framework for industrial wastewater treatment.