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Remediation of Dyes Using Supramolecular Material Derived from Carbohydrate Based π-Gelator Using the Bottom-Up

Vandana Singh1, Krishnamoorthy Lalitha1, C Uma Maheswari1

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Researchers developed a novel carbohydrate-based gelator for efficient dye removal from industrial wastewater. This sustainable material offers a promising solution for mitigating water pollution caused by textile dyeing processes.

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Green Chemistry

Background:

  • Industrialization drives population growth, leading to environmental sustainability crises, notably water pollution from industrial effluents.
  • Dyeing industries are significant contributors to water pollution, discharging large volumes of effluents containing various dyes annually.
  • Effective and sustainable methods are crucial for treating dye-contaminated wastewater to conserve environmental quality.

Purpose of the Study:

  • To develop a simple protocol for generating a carbohydrate-based amphiphile with gelation properties.
  • To investigate the dye adsorption and desorption characteristics of the synthesized gelator.
  • To demonstrate the application of the gelator in a cartridge for removing specific dyes from water.

Main Methods:

  • Synthesis of a carbohydrate-based π-gelator using D-sorbitol and pyrene-1-carboxaldehyde.
  • Characterization of the gelator's self-assembly using optical microscopy and Scanning Electron Microscopy (SEM).
  • Evaluation of gel properties via rheology and assessment of dye adsorption/desorption capabilities.
  • Fabrication of a cellulose-based cartridge utilizing template-assisted assembly for dye removal.

Main Results:

  • A carbohydrate-based π-gelator was successfully synthesized in good yield.
  • The gelator demonstrated the ability to form gels in various solvents and oils through bottom-up assembly.
  • The gel exhibited significant dye adsorption capabilities for methylene blue, crystal violet, rhodamine B, and Congo red.
  • A functional cartridge was developed, showcasing potential for practical dye removal applications.

Conclusions:

  • The developed carbohydrate-based gelator is an effective material for adsorbing various dyes from aqueous solutions.
  • The cellulose-based cartridge demonstrates a viable approach for wastewater treatment in dyeing industries.
  • This research contributes to sustainable environmental management by offering a novel solution for dye pollution mitigation.