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Related Experiment Video

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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
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Wool-Derived Biochar via Composite Modification: Preparation and Enhanced Adsorption Performance for Methylene Blue.

Yufan An1,2, Yanli Sun1,2, Guoliang Wu1,2

  • 1School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|May 28, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel wool-based biochar (WBC) from waste wool for dye removal. This sustainable adsorbent shows high efficiency in removing methylene blue (MB) and other dyes from wastewater.

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Waste Management

Background:

  • Industrial dye discharge poses a significant environmental challenge.
  • Developing sustainable and efficient adsorbents is crucial for wastewater treatment.
  • Valorizing waste materials like wool offers a circular economy approach.

Purpose of the Study:

  • To synthesize a novel wool-based biochar (WBC) using waste wool fibers.
  • To investigate the adsorption mechanisms and capacity of WBC for methylene blue (MB).
  • To evaluate the regeneration capability and broad-spectrum applicability of WBC for dye pollutant removal.

Main Methods:

  • Hybrid modification of waste wool fibers via molten salt activation and nitrogen doping.
  • Characterization of synthesized WBC for surface area, pore structure, and morphology.
  • Adsorption experiments to determine optimal conditions and kinetics for MB removal.
  • Regeneration tests and assessment of WBC efficacy on various dye pollutants.

Main Results:

  • Synthesized WBC exhibits a high specific surface area (954.7 m²/g) and hierarchical porous structure.
  • Maximum adsorption capacity for MB reached 887.4 mg/g under optimal conditions.
  • Adsorption followed pseudo-second-order kinetics and Langmuir isotherm, indicating chemisorption.
  • WBC maintained 60.2% of its initial adsorption capacity after five regeneration cycles.
  • Demonstrated broad-spectrum applicability for diverse dye pollutants.

Conclusions:

  • Waste wool can be effectively transformed into a high-performance biochar adsorbent (WBC).
  • WBC offers a sustainable and efficient solution for removing MB and other dyes from wastewater.
  • The study highlights the potential of WBC in advancing resource recycling and environmental management.