Model-based and Experimental Analysis of Transient Electrodialysis Processes

Matthias Johannink

doi:10.51202/9783186949035

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Bibliographic data

Copyright year: 2016
ISBN-Print: 978-3-18-394903-8
ISBN-Online: 978-3-18-694903-5
Publisher: VDI Verlag, Düsseldorf
Series: Verfahrenstechnik
Volume: 949
Language: German
Pages: 177
Product type: Book Titles

Titelei/Inhaltsverzeichnis Partial access Pages I - 3 Download chapter (PDF)
1. 1. Ion exchange membranes No access
  2. Spacer-filled flow channels No access
  3. Secondary transport effects No access
2. 1. Module and spacer design No access
  2. Transient electrodialysis processes No access
3. 1. Investigation of spacers by CFD methods No access
  2. Modeling of ion exchange membranes No access
  3. Electrodialysis process modeling No access
  4. Modeling ionic mass-transport in a homogenous phase No access
4. Conclusions and scope of this work No access
1. 1. Experimental set-up No access
  2. Batch desalination experiments No access
  3. Current-voltage experiments No access
  4. Degrees of freedom, measurements and performance measures No access
2. Scope of the experimental study No access
3. Current-voltage behavior No access
4. 1. Applied current No access
  2. Volumetric flow rate No access
  3. Comparison of different spacers No access
  4. Discussion No access
5. Operation with transient applied currents No access
6. 1. Desalination of NaCl solution using a pulsed applied current No access
  2. Desalination of NaCl - Na2SO4 solution using a pulsed applied current No access
  3. Discussion No access
7. Conclusions No access
1. Introduction No access
2. 1. Index concepts for DAE systems No access
  2. Index concepts for PDAE systems No access
  3. Comparison of the index concepts for PDAE systems No access
3. 1. Differential index No access
  2. Index analysis No access
  3. Generalization of the index reduction algorithm No access
  4. Systematic procedure for the index analysis and reduction No access
4. 1. Physical interpretation of the reformulated model No access
  2. Identification of consistent initial and boundary conditions No access
5. Conclusions No access
1. 1. Species balance equations and definition of the reference velocity No access
  2. Constitutive equations No access
  3. Momentum balance equation and hydrodynamics No access
  4. Complete mathematical models No access
2. 1. Index with respect to time No access
  2. Index with respect to the spatial coordinates No access
  3. Reformulated low index model No access
3. 1. Reformulation into a reduced system of PDE No access
  2. Initial and boundary conditions No access
4. Conclusions No access
1. 1. General modeling assumptions No access
  2. Spacer-filled flow channels and ion exchange membranes No access
  3. Electrodes and plant periphery No access
  4. Interface models and coupling of model components No access
2. 1. Degrees of freedom and model parameters No access
  2. Implementation No access
3. 1. Dynamics in pulsed-current electrodialysis No access
  2. Discrimination of transport resistances No access
  3. Competitive transport in pulsed current experiments No access
  4. Discussion No access
4. 1. Current-voltage experiments No access
  2. Batch desalination experiments No access
5. Conclusions No access
1. Towards an integrated description of hydrodynamics and ionic mass transport No access
2. 1. Pressure drop experiments No access
  2. Geometric modeling of the spacer and simulation scenario No access
  3. Software and implementation No access
  4. Semi-empirical modeling of pressure drop in spacer-filled channels No access
  5. Work flow for model identification No access
  6. Parameter estimation, identifiability analysis and design of experiments No access
3. 1. Velocity profiles No access
  2. Pressure drop profiles No access
  3. Comparison with experimental data No access
4. 1. Non-woven spacers No access
  2. Woven spacer No access
  3. Predictive capabilities of the identified pressure drop models No access
5. Summary and Discussion No access
1. Summary No access
2. Outlook No access
1. 1. Geometric properties of the lab-scale ED plant No access
  2. 1. Pulsed current No access
    2. Mixture experiments No access
    3. Current-voltage experiments No access
  3. Overview current-voltage experiments No access
  4. Desalination experiments No access
2. 1. Conversion of different reference velocities No access
  2. Conversion of activity coefficients No access
  3. Multi-component density model No access
  4. 1. MS coefficients of ion-ion pairs No access
    2. MS coefficients of ion-water pairs No access
  5. Model parameters No access
3. 1. Geometric parameters of the spacer geometries in the basis data set No access
  2. Parameter estimates for the final friction coefficient model for the non-woven and woven spacer No access
  3. Model candidates for the identification of a generalized pressure drop model No access
Bibliography No access Pages 161 - 177