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A Theoretical Model of Flotation Deinking Efficiency

Bloom1, Heindel

  • 1Department of Mathematical Sciences, Northern Illinois University, DeKalb, Illinois, 60115

Journal of Colloid and Interface Science
|June 1, 1997
PubMed
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A new kinetic model for flotation deinking uses probabilities to predict ink particle removal. This model defines flotation efficiency based on two kinetic constants, k1 and k2, influenced by particle and fluid properties.

Area of Science:

  • Chemical Engineering
  • Environmental Science
  • Materials Science

Background:

  • Flotation deinking is crucial for recycling paper.
  • Existing models may not fully capture the microprocess dynamics of ink particle removal.

Purpose of the Study:

  • To develop a kinetic or population balance model for the overall flotation deinking process.
  • To define theoretical flotation efficiency and other system performance parameters.

Main Methods:

  • The model incorporates probabilities of microprocesses occurring during flotation.
  • It utilizes two key kinetic constants: k1 (adhesion probability) and k2 (aggregate instability probability).

Main Results:

  • The kinetic model's solution is presented in terms of k1 and k2.

Related Experiment Videos

  • These constants are shown to be functions of physical properties (bubble/particle size, density) and fluid properties (viscosity, surface tension).

    • Conclusions:

    • The developed model provides a theoretical framework for flotation deinking efficiency.
    • It offers insights into how system parameters influence the deinking process and performance.