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Pectin microgel particles as high adsorption rate material for methylene blue: Performance, equilibrium, kinetic,

Li-Li Yu1, Li-Na Jiang2, Shu-Ya Wang1

  • 1College of Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, People's Republic of China.

International Journal of Biological Macromolecules
|February 7, 2018
PubMed

Insights

Pectin microgel particles (PMP) efficiently remove methylene blue (MB) with a high adsorption rate and capacity. This study highlights PMP as a promising material for effective MB cleanup from contaminated water sources.

Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Nanotechnology

Background:

  • Pectin gel is effective for methylene blue (MB) removal but suffers from a low adsorption rate.
  • Developing advanced materials is crucial for efficient water pollutant remediation.

Purpose of the Study:

  • To prepare pectin microgel particles (PMP) to enhance MB adsorption rate and capacity.
  • To investigate the adsorption mechanism, kinetics, and regeneration efficiency of PMP for MB removal.

Main Methods:

  • Synthesis and characterization of pectin microgel particles (PMP).
  • Batch adsorption experiments to determine MB adsorption kinetics and isotherms.
  • Analysis using pseudo-second-order kinetic model and electrostatic adsorption principles.
  • Regeneration and cycling tests to evaluate PMP reusability.

Main Results:

  • PMP exhibited a high adsorption rate for MB, reaching equilibrium within 20 minutes.
  • The maximum adsorption capacity of PMP was determined to be 284.09 mg/g, following monolayer adsorption.
  • Adsorption followed pseudo-second-order kinetics, controlled by film diffusion, and was electrostatic in nature.
  • Regenerated PMP maintained over 80% recovery efficiency after three cycles.

Conclusions:

  • Pectin microgel particles (PMP) demonstrate superior performance in MB removal compared to pectin gel.
  • PMP offers high adsorption capacity, rapid kinetics, and excellent reusability, making it a viable option for MB cleanup.
  • The study validates PMP as a promising adsorbent for efficient removal of methylene blue from aqueous solutions.
Keywords:
MechanismMethylene bluePectin microgel particlesRapid adsorptionRegeneration

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