Simulation algorithm
The equations were solved by the finite difference method using Matlabs
software. The basic parameters used in the model calculation are
summarized in Table 1 . The simulation methodology, summarized
schematically in Figure 2 , was as follows:
- The operating conditions (P , ωo ,Cf , T ) and membrane properties
(Rp , εm , τ ,S ) were input in the Matlab program.
- The initial permeate flux J (0) at t =0 was calculated
using eq. (2) without deposition of foulants.
- The average Mw of dextran was determined based on the kinetics of
dextran degradation using eq. (1).
- The deposition possibility of particles was determined by the force
balance model using eq. (22) to achieve the calculation of the total
membrane filtration resistance Rt .
- The permeate flux and solute flux at any time could be calculated
step-by-step using the above procedures.
Figure 2. Schematic diagram of the methodology used in this
work.
Table 1. Parameters used for model simulation