Course

Ion Exchange Separation and Purification Methods

Basics and Applications in Chemistry and Chemical Industry

 

Goals

To provide students with:


Syllabus 2008

1. Introduction
   1.1. History note

2. Chemical background of ion exchange separation
   2.1. Ion exchange reactions
   2.2. Ion exchangers
   2.3. Ionic form
   2.4. Hydrocarbon structure
   2.5. Functional groups
   2.6. Ion exchange capacity
   2.7. Physical structure
   2.8. Properties - Summary

3. Interactions with solutions
   3.1. Simple models
   3.2. Swelling
   3.3. Water structure and sorption isotherms
   3.4. Quantitative Treatment of swelling
   3.5. Distribution of ions between ion exchanger and solution
   3.6. Donnan potential

4. Physico-chemical background of ion exchange processes
   4.1. Ion exchange equilibria
   4.2. Equivalent fraction
   4.3. Ion-exchange Isotherm
   4.4. Selectivity and selectivity characteristics
   4.5. Thermodynamics of ion exchange
   4.6. Phenomena affecting selectivity
   4.7. Modern physico-chemical models

5. Specific interactions in ion exchange systems
   5.1. Chelating resins
   5.2. Ligand exchange
   5.3. Chiral Recognition with ligand exchangers
   5.4. Imprinted functional polymers

6. Kinetics
   6.1. Mechanism of ion exchange processes
   6.2. Rite-determining step and quantitative approaches
   6.3. Examples of kinetic models
   6.4. Approaches to enhance the rate of ion exchnage
   6.5. Diffusion in porous media

7. Column processes

nbsp;  7.1. Ion exchange in columns
   7.2.Breakthrough curve
   7.3. Performance of column
   7.4. Sorption front
   7.5. Hydrodynamic effects
   7.6. Simple quantitative treatment of column processes
   7.7. More advanced quantitative treatment of column processes

8. Ion exchange purification and separation
   8.1. Elution and regeneration
   8.2. Countercurrent regeneration
   8.3. Cycles of ion exchange separation
   8.4. Removal of ionic mixture
   8.5. Extraction of ions
   8.6. Multistep deionisation
   8.7. Mixed bed deionisation

9. Treatment of gases and fumes
   9.1. Exchange reactions in gas phase
   9.2. Chemical sorption of gases
   9.3. Use of complexation
   9.4. Presssure- and temperature-reversible processes
   9.5. General approaches to the treatment of gases

10. Impregnated resins
   10.1. Methods of impregnation
   10.2. Peculiarity of impregnated materials
   10.3. Equilibria involving solvent impregnated materials
   10.4. Stability of impregnated materials
   10.5. Comparison with other separation methods

11.Electroseparation with ion exchange membranes
   11.1. Electrical current in ion exchangers
   11.2. Transference numbers and transport numbers
   11.3. Transference of solvent; convection conductivity
   11.4. Ion exchange membranes
   11.5. Electrotransport of ions through ion exchange membranes
   11.6. More about the electrotransport
   11.7. Electro-membrane separation
   11.8. Electro-purification of organic substances
   11.9. Monovalent-ion permselective membranes
   11.10. Electrochemical processes in packed beds

12. Technological schemes of ion exchange
   12.1. Multicolumn technology
   12.2. Fluidised bed and expansed bed
   12.3. Moving-bed
   12.4. Consecutive columns (Cascade)

13. Dual temperature separation
   13.1. Parametric elution
   13.2. Sirotherm process
   13.3. Parametric pumping
   13.4. Double-temperature separation with moving bed

14. Industrial separations with ion exchange resins
   14.1. Water Treatment
   14.2. Sugar processing
   14.3. Pharmaceutical and medical applications
   14.4. Hydrometallurgy
   14.5. Principles of equipment design
   14.6. Flow through fixed beds of resin
   14.7. Flow through fluidised beds of resin
   14.8. Fixed-Bed Equipment
   14.9. Moving-Bed Equipment
   14.10. Fluidised-Bed Equipment
   14.11. Removable and transportable set-ups

15. Non-chemical Economical aspects of ion exchange technology
   15.1. Economical aspects of ion exchange technology
   15.2. Environmental aspects of ion exchange technology

16. Some special applications of ion exchange resins
   16.1. Ion exchange separations in food industry
   16.2. Ion exchange synthesis
   16.3. Catalysis with ion exchange materials
   16.4. Electron exchangers and redox resins


Prerequisites: Any sucessfully complyted chemistry course or equivalent (university level)


Communications

The course is taught via Internet including:

  1. Distribution of the course material complimintary to the published media
  2. On-line Internet exercises
  3. Distribution of problems to solve

The feedback is provided with options:

  1. Direct replies via Internet (course forum)
  2. E-mail communication
  3. Conventional non-electronic communication ways

 

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