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Diffusion dialysis cation & anion exchange membrane

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Diffusion dialysis (DD) is an ion-exchange membrane (IEM) separation process driven by concentration gradient and has been applied for separation and recovery of acid/alkali waste solutions in a cost-effective and environmentally friendly manner.

Diffusion dialysis with ion-exchange membranes is mainly used today to recover acids or bases from a mixture with salts. The process is based on the fact that ion-exchange membranes generally show a high permeability for counterions while being more or less impermeable for co-ions. Exceptions are protons and hydroxide ions which can easily permeate both cation- and anion-exchange membranes. The transport mechanism in diffusion dialysis is more complex than in conventional dialysis due to the electrostatic interaction between positive and negative charges and the electroneutrality requirement。

 

 

 

 Main technical indexes of diffusion dialysis CEM for alkali separation

Diffusion dialysis CEM for alkali separation

Product type

TWDDC1

Standard

TWDDC2

High Flux

Thickness

(mm)

0.25~0.28

0.15~0.25

Water content

(%)

50~70

40~80

OH- Diffusion Coefficient

(10-7m/s)

≥1

≥2

OH-/AlO2+

Separation factor

≥10

≥15

Application: alkali/salt separation in aluminum oxide, tungsten oxide, viscose fiber, etc.

 

Main technical indexes of  diffusion dialysis AEM for acid separation

Diffusion dialysis AEM for acid separation

Product type

TWDDA1

Standard

TWDDA2

High Flux

Thickness

(mm)

0.30~0.32

0.20~0.30

Water content

(%)

40~70

20~50

H+ Diffusion Coefficient

(10-7m/s)

≥5

≥5

H+/Fe2+

Separation factor

≥15

≥15

Application: acid/salt separation in wet metallurgy,

Formed Fool  , steel processing and storage battery ,etc.

Contact:

Tel:+86 592 6514970

Skype:18060902001

WhatsApp:18060902001

WeChat:18060902001

TM: guochukeji

QQ:1641011431

  • Product Details
  • Brand :
  • Place of Origin : FUJIAN
  • FOB Price : On Request
  • Minimum Order Quantity : Not Given
  • Supply Ability :
  • Packaging & Delivery
  • Packaging Detail : Not Given
  • Delivery Detail : Not Given

Diffusion dialysis (DD) is an ion-exchange membrane (IEM) separation process driven by concentration gradient and has been applied for separation and recovery of acid/alkali waste solutions in a cost-effective and environmentally friendly manner.

Diffusion dialysis with ion-exchange membranes is mainly used today to recover acids or bases from a mixture with salts. The process is based on the fact that ion-exchange membranes generally show a high permeability for counterions while being more or less impermeable for co-ions. Exceptions are protons and hydroxide ions which can easily permeate both cation- and anion-exchange membranes. The transport mechanism in diffusion dialysis is more complex than in conventional dialysis due to the electrostatic interaction between positive and negative charges and the electroneutrality requirement。

 

 

 

 Main technical indexes of diffusion dialysis CEM for alkali separation

Diffusion dialysis CEM for alkali separation

Product type

TWDDC1

Standard

TWDDC2

High Flux

Thickness

(mm)

0.25~0.28

0.15~0.25

Water content

(%)

50~70

40~80

OH- Diffusion Coefficient

(10-7m/s)

≥1

≥2

OH-/AlO2+

Separation factor

≥10

≥15

Application: alkali/salt separation in aluminum oxide, tungsten oxide, viscose fiber, etc.

 

Main technical indexes of  diffusion dialysis AEM for acid separation

Diffusion dialysis AEM for acid separation

Product type

TWDDA1

Standard

TWDDA2

High Flux

Thickness

(mm)

0.30~0.32

0.20~0.30

Water content

(%)

40~70

20~50

H+ Diffusion Coefficient

(10-7m/s)

≥5

≥5

H+/Fe2+

Separation factor

≥15

≥15

Application: acid/salt separation in wet metallurgy,

Formed Fool  , steel processing and storage battery ,etc.

Contact:

Tel:+86 592 6514970

Skype:18060902001

WhatsApp:18060902001

WeChat:18060902001

TM: guochukeji

QQ:1641011431

 
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