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Title: Modelling of the displacement washing of pulp fibre bed
Authors: Arora, Shelly
Dhaliwal, S S
Kukreja, V K
Keywords: Langmuir isotherm
Peclet number
Axial dispersion model
Orthogonal collocation on finite elements
Exit solute concentration
Issue Date: Sep-2006
Publisher: CSIR
Series/Report no.: D21C9/02
Abstract: The mechanism of the displacement washing of the bed of pulp fibres is mathematically modelled using a single parameter namely, Peclet number. The bulk fluid concentration is assumed to be the function of washing period and position in the bed. The effect of Peclet number on exit solute concentration is shown using the breakthrough curves. A non-linear adsorption isotherm (Langmuir) is used to describe the relationship between bulk fluid concentration and the concentration of solute accumulated on the particle surface. The validity of the model is shown using the literature data. A comparison of washing behaviour of pulp fibres and static bed of glass beads is also presented.
Description: 433-439
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.13(5) [September 2006]

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