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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Related Experiment Video

Updated: Jan 13, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

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Polymer Crosslinked Activated Carbon Pellets for Dye Adsorption.

Muhammad Hadi1, Sungho Yoon1

  • 1Department of Chemistry, Chung Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.

Materials (Basel, Switzerland)
|January 10, 2026
PubMed
Summary

Researchers developed stable activated carbon (AC) pellets using a novel crosslinked polymer matrix. This eco-friendly method enhances AC handling for water purification and environmental applications, overcoming powder dispersal issues.

Keywords:
adsorptioncrosslinked polyvinyl alcohol–diglycidyl ether of bisphenol a matrixdisintegrationmethylene bluepelletization

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Area of Science:

  • Materials Science
  • Environmental Engineering
  • Chemical Engineering

Background:

  • Powdered activated carbon (AC) offers excellent adsorption properties for water and air purification.
  • Handling powdered AC in industrial settings is challenging due to dispersion and environmental risks.
  • Developing stable, pelletized AC forms is crucial for practical applications.

Purpose of the Study:

  • To create structurally stable activated carbon pellets.
  • To overcome limitations of traditional AC pelletization methods.
  • To develop an eco-friendly, low-temperature pelletization strategy for AC.

Main Methods:

  • Pelletizing AC within a crosslinked polyvinyl alcohol-diglycidyl ether of bisphenol A (PVA-DGEBA) matrix.
  • Utilizing a robust three-dimensional polymeric network for structural stability.
  • Characterizing pellet properties through hardness tests, swelling behavior, and Brunauer-Emmett-Teller analysis.

Main Results:

  • Structurally stable cylindrical AC pellets were successfully produced.
  • Pellets demonstrated significant methylene blue (MB) adsorption capacity (~14.8 mg/g).
  • Pellets exhibited excellent structural integrity in aqueous solutions and stability in organic solvents (methanol, ethanol, acetone).
  • Mechanical strength reached 3.37 ± 0.46 MPa, with an adsorption volume of ~250 cm³/g.

Conclusions:

  • The PVA-DGEBA matrix provides an effective, low-temperature method for producing stable AC pellets.
  • This pelletization strategy enhances AC usability in demanding applications like wastewater treatment.
  • The developed AC pellets offer a promising, eco-friendly alternative to traditional powdered AC.