タイトルまたは説明
The principle of bipolar membrane
electrodialysis
By using the potential difference as the driving force, the
selective permeability of anion and cation exchange membranes, and
the role of bipolar membranes to decompose water to produce H + and
OH- to prepare acid and alkali separation operations.
The water is catalytically active to force dissociation of water
into OH- and H+ ions when exceeding a potential difference of
approximately 0.8 V In the intermediate layer between Anion
Exchange Layer (AEM) and Cation Exchange Layer (CEM). The membrane
should be operated under forward bias conditions which may cause
blistering. The CEM must be directed towards the cathode, the AEM
must be directed towards the anode. If the membrane is used in the
opposite position at high current density even for short term, the
interim layer may degrade (blistering), and the monolayers may
delaminate.
The electro-catalytically forced water dissociation produces in
contrast to the classical electrolysis of water no reaction gases.
Therefore, one Mol of OH- and H+ ions can be achieved at an energy
value of approximately *2 Wh (Electrolysis: approximately *5 Wh per
Mol).
Properties of bipolar ion exchange membranes :
| Physical
Properties |
Units |
Index
Values |
| Thickness |
mm |
0.*4—0.*5 |
| Water content |
% |
*****0 |
| Ion-exchange
capacity |
mol/kg |
(Cation
side)0.**1.8
(Anion side)0.**1.0 |
| Selective
permeability |
% |
****5 |
| Breaking Strength,
max. |
MPa |
>0.*5 |
Working Principle:
The bipolar membrane is a kind of electrically driven membrane. Its
main function is to provide H+ ions and OH- ions under the electric
field force. The membrane has one side of the cathode and the other
side of the membrane. The middle layer of the cathode and the
cathode is an aqueous layer. Under the action of external DC
electric force, the H2O in the water layer is split into H+ ions
and OH- ions, and migrates through the positive and negative sides
of the subject solution respectively. Therefore, the role of the
bipolar membrane is to provide H+ under the action of the electric
field force. Ion and OH-ion sources,
Applications:
·Treatment and recycling of salty wastewater
· Direct production of hydrochloric acid and sodium hydroxide from
salt (sodium chloride)
· Direct production of vitamin C from vitamin C sodium salt
· Direct production of tartaric acid from sodium tartrate
· Direct production of lactic acid from sodium lactate
· Direct production of gluconic acid from sodium gluconate
· Direct production of methanesulfonic acid from sodium
methanesulfonate
· Direct separation of amino acids from fermentation broth
·Return from sodium acetate wastewater
Packing Size
**0***0mm per sheet
**0****0mm per sheet
| 国: |
China |
| モデル番号: |
-
|
| 离岸价格: |
300 ~ 600 / Piece ( Negotiable ) （交渉可能）
Get Latest Price
|
| ロケーション: |
China |
| 最低注文量の価格: |
300 per Piece |
| 最低注文量: |
1 Piece |
| パッケージの詳細: |
carton |
| 納期: |
5--15 days |
| 供給能力: |
20000 Piece per Month |
| 支払いタイプ: |
T/T, L/C, Western Union, Money Gram, PayPal |
| 製品グループ : |
Membrane
|
