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Biomimetic dynamic membrane for aquatic dye removal.

Wensong Chen1, Jiahao Mo1, Xing Du2

  • 1School of Environmental Science and Engineering, Guangzhou, 510006, China.

Water Research
|January 2, 2019
PubMed
Summary

This study developed a biomimetic dynamic membrane (BDM) using carbon nanotubes (CNTs) and laccases for effective dye wastewater treatment. The BDM shows high pollutant removal, stable flux, and antifouling capabilities for sustainable water purification.

Keywords:
AdsorptionAdsorptive dynamic membrane (ADM)Biomimetic dynamic membrane (BDM)Dye removalEnzymatic degradation

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemical Engineering

Background:

  • Wastewater treatment remains a significant environmental challenge.
  • Advanced membrane technologies are crucial for efficient pollutant removal.
  • Biomimetic approaches offer novel solutions for water purification.

Purpose of the Study:

  • To fabricate and optimize a biomimetic dynamic membrane (BDM) for advanced dye wastewater treatment.
  • To investigate the synergistic effects of carbon nanotubes (CNTs) and laccases in the BDM.
  • To evaluate the performance and stability of the BDM under various operating conditions.

Main Methods:

  • Fabrication of BDM using physical adsorption and filtration of CNTs and laccases.
  • Investigated mixed vs. stepwise filtration methods for BDM fabrication.
  • Optimized operational parameters including CNT/laccase loading, dye concentration, agitation speed, and transmembrane pressure (TMP).

Main Results:

  • Mixed filtration method showed superior performance in BDM fabrication.
  • Optimized BDM achieved high dye removal rates and stable flux (>120 L m⁻² h⁻¹).
  • BDM demonstrated excellent antifouling capacity due to in-situ enzymatic degradation and easy backwash cleaning.

Conclusions:

  • BDM integrates adsorption, enzymatic degradation, and membrane separation for synergistic pollutant removal.
  • Optimized BDM offers a stable, efficient, and reusable solution for dye wastewater treatment.
  • BDM presents a promising functional membrane material for future water treatment applications.