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Related Experiment Videos

Plastic deformation in cake consolidation.

Jin Zhao1, Chi-Hwa Wang, Duu-Jong Lee

  • 1Department of Chemical and Environmental Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576.

Journal of Colloid and Interface Science
|May 3, 2003
PubMed
Summary

This study models stress, strain, and void ratio in cake filtration dewatering using a plasticity model. Finite plasticity significantly impacts dewatering performance for medium and highly compressible cakes.

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Area of Science:

  • Environmental Engineering
  • Chemical Engineering
  • Materials Science

Background:

  • Cake filtration is crucial for solid/liquid separation in wastewater treatment.
  • Understanding filter cake properties is essential for efficient dewatering.
  • The Compression-Permeability Cell (C-P Cell) is used to analyze filter cake behavior.

Purpose of the Study:

  • To develop a mathematical model for transient stress, strain, and void ratio distribution in a C-P Cell.
  • To investigate the role of finite plasticity in cake dewatering.
  • To analyze dewatering performance for different cake compressibilities.

Main Methods:

  • A mathematical model was developed to simulate C-P Cell conditions.
  • Simulations employed a plasticity model.

Related Experiment Videos

  • Sensitivity analysis was performed to assess the impact of finite plasticity.

    • Main Results:

    • The model successfully studied transient distributions of stresses, strains, and void ratios.
    • Finite plasticity was shown to influence dewatering outcomes.
    • The study identified distinct effects of finite plasticity on medium and high compressibility cakes.

    Conclusions:

    • The proposed plasticity model provides insights into dewatering mechanisms within a C-P Cell.
    • Finite plasticity is a significant factor affecting the efficiency of cake dewatering.
    • This research contributes to optimizing solid/liquid separation processes in wastewater treatment.