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Hollow Biomass Adsorbent Derived from Platanus Officinalis Grafted with Polydopamine-Mediated Polyethyleneimine for the Removal of Eriochrome Black T from Water

  • 0School of Water and Environment, Chang'an University, Xi'an 710054, China.
Molecules (basel, Switzerland) +

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December 17, 2024

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December 17, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Magnetic Platanus officinalis fibers modified with polyethyleneimine and polydopamine (PEI-PDA@M-PFs) effectively remove anionic dyes from water. This eco-friendly adsorbent shows high capacity, stability, and reusability for sustainable water treatment applications.

Area Of Science

  • Biomaterials Science
  • Environmental Chemistry
  • Materials Science

Background

  • Platanus officinalis fibers (PFs) are eco-friendly, low-cost, and readily available biomass materials.
  • Developing efficient adsorbents for anionic dye removal is crucial for water purification.

Purpose Of The Study

  • To synthesize and characterize magnetic Platanus officinalis fibers grafted with polyethyleneimine and polydopamine (PEI-PDA@M-PFs).
  • To evaluate the adsorption performance of PEI-PDA@M-PFs for anionic dye removal from aqueous solutions.

Main Methods

  • PEI-PDA@M-PFs were prepared using mussel-inspired coating and Michael addition reactions.
  • Adsorption experiments were conducted to determine adsorption isotherms, kinetics, thermodynamics, and reusability.
  • The adsorption capacity for Eriochrome Black T (EBT) dye was measured under various conditions.

Main Results

  • PEI-PDA@M-PFs exhibited excellent hydrophilicity, magnetism, and a positive surface charge.
  • The maximum adsorption capacity for EBT dye reached 166.11 mg/g under optimal conditions (pH 7.0).
  • Adsorption followed pseudo-second-order kinetics and the Langmuir model, indicating chemisorption.
  • The adsorbent demonstrated high stability and recyclability over five adsorption-desorption cycles.

Conclusions

  • PEI-PDA@M-PFs are effective, reusable, and sustainable adsorbents for anionic dye removal.
  • The developed material offers a promising solution for wastewater treatment and environmental remediation.
  • This study provides insights into the application of functionalized biomass for pollutant removal.

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