Перенос ионов в мембранах - Заболоцкий В.И.
ISBN 5-02-001677-2
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. 226
5.4.2. Counterion self-
diffusion................................................................
232
5.4.3. Conon self-
diffusion................................................................
..... 233
5.5. Microheterogeneous membrane model
identification........................................... 239
5.5.1. Model
parameters...............................................................
.......... 239
5.5.2. Parameter determination
scheme........................................................... 240
5.5.3. Determining optimal DA and a parameters from electrolyte diffusion
experiment 242
5.5.4. The initial approximation of a° and DAand the results of an
optimization................. 245
5.5.5. Confidence interval and the influence of the experimental error
upon the a and DA parameters determination
precision............................................................
247
5.5.6. The identification problem solution
examples............................................. 249
5.5.7. Membrane normalization
problems.......................................................... 250
5.58. Data bases and
modelling................................................................
.. 251
5.6. Water
transport................................................................
.......... 252
5.6.1.
Filtration...............................................................
................ 253
5.6.2. Osmotic
permeability.............................................................
........ 255
5.6.3. Electroosmotic
permeability.............................................................
. 255
5.6.4. Water transport in electrodialytic concentration
process................................. 259
Chapter 6. STEADY-STATE ELECTROLYTE ELECTRODIFFUSION THROUGH
AN ION-EXCHANGE MEMBRANE. DIFFUSION LAYERS INFLUENCE 263
6.1. Boundary diffusion layer
concept........................................................... 264
6.2. Diffusion layer
thickness................................................................
.. 266
6.3. "Mild" current modes. Formulating the boundary
problem..................................... 272
6.4. Methods for
solution.................................................................
...... 276
6.4.1. Analytical
solutions................................................................
..... 278
6.4.2. Numerical solution
techniques............................................................
280
6.5. Binary electrolyte
electrodiffusion........................................................
282
391
6.5.1. Concentration profiles in the diffusion layers and the limiting
current....................... 282
6.5.2. Concentration profile in the
membrane......................................................... 284
6.5.3. Effective transport
numbers..................................................................
. 286
6.5.4. Current-voltage
characteristics..........................................................
..... 289
6.5.5. An approximate solution of the boundary
problem............................................... 291
6.5.6. A homogeneous membrane
model..................................................................
292
6.6. Ternary electrolyte
electrodiffusion.........................................................
... 294
6.6.1. The problem formulation and the dimentionless
parameters...................................... 295
6.7. Competitive ion transport through modified-surface
membranes.................................... 309
6.8. Volume charge in the diffustion
layer........................................................... 315
6.8.1. Stating and simplifying the
problem........................................................... 317
6.8.2. Field
distribution.............................................................
............... 319
6.8.3. Concentrations
distribution.............................................................
...... 322
6.8.4. Bulh charge
distribution.............................................................
......... 324
6.8.5. Current-voltage
characteristics..........................................................
..... 326
6.8.6. The quasiuniform charge distribution
condition................................................ 327
6.9. Intensification of the electrodialysis of dilute
solutions...................................... 331
6.9.1. Hydrodynamic intensification techniques
restriction........................................... 331
6.9.2. Gravitational
convection...............................................................
....... 333
6.9.3.
Electroconvection........................................................
..................... 336
6.9.4. The exaltation
effect...................................................................
...... 340
6.10.
Conclusion...............................................................
