Calculation of sedimentation equilibrium using a modified flash algorithm

M. Castier, R. O. Espósito, F. W. Tavares, R. P. Peçanha

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We solved the sedimentation equilibrium problem using a generalized flash algorithm, in which we specify the temperature, global particle number density, total volume, and height of the system. The minimization of a thermodynamic potential that takes into account the effect of the gravitational field yields the equilibrium distribution profiles. We used a hard-sphere-mixture equation of state as the thermodynamic model. The results showed to be in good agreement with both experimental data for identical spheres and Monte Carlo simulations for binary systems. We also present a methodology suitable to calculate sedimentation equilibrium in more complex systems, containing more than one solid, each of them characterized by its own size distribution.

Original languageEnglish
Pages (from-to)3771-3779
Number of pages9
JournalChemical Engineering Science
Volume56
Issue number12
DOIs
Publication statusPublished - 21 Jun 2001
Externally publishedYes

Fingerprint

Sedimentation
Flash
Thermodynamics
Binary System
Equilibrium Distribution
Equilibrium Problem
Hard Spheres
Gravitational Field
Equations of state
Equation of State
Large scale systems
Complex Systems
Monte Carlo Simulation
Experimental Data
Calculate
Methodology
Temperature
Model
Profile
Monte Carlo simulation

Keywords

  • Colloidal suspensions
  • Equations of state
  • Mixtures
  • Phase equilibria
  • Sedimentataion
  • Spheres

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Calculation of sedimentation equilibrium using a modified flash algorithm. / Castier, M.; Espósito, R. O.; Tavares, F. W.; Peçanha, R. P.

In: Chemical Engineering Science, Vol. 56, No. 12, 21.06.2001, p. 3771-3779.

Research output: Contribution to journalArticle

Castier, M. ; Espósito, R. O. ; Tavares, F. W. ; Peçanha, R. P. / Calculation of sedimentation equilibrium using a modified flash algorithm. In: Chemical Engineering Science. 2001 ; Vol. 56, No. 12. pp. 3771-3779.
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