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Numerical and experimental analysis of flow by Capacitive Deionization System

Thank you for your attention

supervisors: Dr. Mokhtar Bidi and Dr. Mohammad Mojaddam

Advisor: Dr Habib Kazemi

Referees:Dr. Taghizadeh Manzari, Dr. Aghanajafi, Dr. Haghighi Khoshkhou and Dr. Majidi

By: Sajjad Bouzari

8/7/2019

Simulations

New Systems

THERMODYNAMIC

CFD

30

50

29

31

51

28

49

GOUY CHAPMAN STERN

CIRCUIT MODELING

MODIFIED DONNAN

36

37

35

Flow By CDI

Flow Through CDI

Flow Electrode CDI

33

45

44

40

46

42

34

39

47

43

Assumptions:

- Electroosmetic flow

- Fully developed

- Advection neclected within electrode

- Constant diffusion coeffiecient

- Identical monovalent Ions

- Constant micropore capacity

- Surface elements were neglected

48

41

38

32

Future challenges

- Surface charge

- redox functionalities

- Fluid flow vortices

- Asymmetric salts

-Scaling

- Temperature

- Electroosmotic flow

- Effect of protons

52

27

Surface Treatment

25

24

26

21

Introduction

22

20

23

19

what is capacitive deionization?

Literature review

Applications

- Literature survey

- Electrodes

- Applications

- Surface Treatment and Temperature

- New Systems

- Simulations

RO - CDI

Selective Deionization

Proposal

Water softening

7

18

14

CDI Cell Structures

13

17

16

15

12

1

2

- Flow By CDI

- Flow Throw CDI

- Flow CDI

- Membrane CDI

- Cylindrical CDI

3

8

Applications

Innovations

Time Table

Electrodes

- Brackish water Desalination

- RO-CDI

- Water Softening

- Selective Deionization

Model Developing including

Thermodynamic analysis of system utilizing developed model

Surface treatment

Electroosmotic flow

Variable volume specific

micropore capacitance

65

Electrode Materials

Temperature

5

Experimental Setup

60

- Activated Carbon

68

8

Data

Diagram

Equipment

Total Equilibrium

adsorption salt

- Ordered mesoporous carbon

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64

63

61

69

67

- Carbid derived Carbon

59

Cell Type

- Carbon Aerogel

- multi-walled carbon nanotubes

- Graphene

4

10

Boundary condition

Governing Equitions

11

9

54

57

6

53

58

56

55

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