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Related Experiment Videos

Highly dense beaded sorbents suitable for fluidized bed applications.

N Voute1, E Boschetti

  • 1BioSepra s.a., Villeneuve la Garenne, France.

Bioseparation
|March 29, 2000
PubMed
Summary
This summary is machine-generated.

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New dense beaded sorbents using mineral oxides and hydrogels enable efficient protein separations in fluidized beds. These high-density beads offer reduced mass transfer resistance and high protein adsorption capacities for advanced bioprocessing.

Area of Science:

  • Biochemical Engineering
  • Materials Science
  • Separation Science

Background:

  • Fluidized bed chromatography is crucial for large-scale protein purification.
  • Developing high-density sorbents is key to improving fluidized bed efficiency.
  • Mass transfer resistance in small beads can limit adsorption rates.

Purpose of the Study:

  • To develop and characterize novel, highly dense beaded sorbents for fluidized bed protein separations.
  • To evaluate the performance of these composite sorbents in terms of adsorption capacity and separation resolution.
  • To optimize sorbent properties for high fluidizing velocities and moderate bed expansion.

Main Methods:

  • Preparation of composite beads using porous mineral oxides (zirconium oxide) supporting functional hydrogels.

Related Experiment Videos

  • Characterization of bead density and size (70 microns).
  • Evaluation of protein adsorption dynamics in fluidized beds and separation resolution in packed beds.

    • Main Results:

    • High-density (5.9 g/ml) zirconium oxide beads enabled high fluidizing velocities (up to 900 cm/h) with moderate bed expansion (<3).
    • Composite sorbents demonstrated rapid protein adsorption capabilities in fluidized beds.
    • Lysozyme dynamic capacities reached 68 and 53 mg/ml at fluidizing velocities of 450 and 900 cm/h, respectively.

    Conclusions:

    • The developed mineral-hydrogel composite beads are highly suitable for fluidized bed applications in protein separations.
    • These sorbents offer significant advantages in terms of density, fluidization behavior, and dynamic binding capacity.
    • The findings pave the way for more efficient and scalable bioseparation processes.