Ion Exchange Membrane

Ion Exchange Membrane

ion exchange membrane

Ion membrane is a kind of polymeric membrane which contained ionic group and has the ability of selective permeability for the ion in the solution, can show high electrolytic performance, all materials are composed of fluorine resin, has a strong chemical stability for a variety of chemicals.Generally in the application of the main use of its ion selective permeability (membrane allows cation through, and the exclusion of anion movement), so also known as the ion selective permeable membrane.



Features:
1) High ion selective permeable performance. The standard membrane has a good permeability to the selection of cation and anion. There are monatomic and divalent ion selective permeability membranes, which can separate univalent ions and multivalent ions.
2) Low resistance. Thin ion exchange membrane, low resistance and power consumption.
3) With supporting materials, high mechanical strength, easy to use.
4) Strong chemical stability, long service life.
5) Excellent dimensional stability. Small size change under the influence of temperature, composition, concentration and other changes.   
6) Small diffusion coefficient. The diffusion movement of solute and solvent is controlled to a minimum.
7) Univalent ions and multivalent ions can be separated. The monovalent ions and polyvalent ions in solution can be separated by choosing different kinds of films.

Application:
1) Water treatment: removal of all kinds of cation and anion in water, pure water treatment, etc
2) Food industry: can be used for sugar, monosodium glutamate, wine refining, biological products and other industrial devices
3) Pharmaceutical industry: It plays an important role in the development of a new generation of antimicrobials and the quality improvement of original antimicrobials. The successful development of streptomycin is a prominent example. In recent years, some researches have been made on Chinese medicine component extraction.
4) Synthetic chemistry and petrochemical industry: Acids and alkaline are commonly used as catalysts for esterification, hydrolysis, transesterification, hydration and other reactions in organic synthesis. Ion exchange resin instead of inorganic acid, alkali, can also carry out the above reaction, and more advantages. Such as resin can be used repeatedly, the product is easy to separate, the reactor will not be corroded, does not pollute the environment, the reaction is easy to control and so on.
5) Environmental protection: aqueous solution or non-aqueous solution contains toxic ions or non-ionic substances, which can be recycled using resin. For example, metal ions in electroplating waste liquid are removed, and useful substances in film production waste liquid are recovered.
6) Hydrometallurgy and other: ion-exchange resin can be used to separate, concentrate, purify uranium and extract rare earth elements and precious metals from depleted uranium ore.

 

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 22 Wh (Electrolysis: approximately 55 Wh per Mol).
Properties of bipolar ion exchange membranes :
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.

 

 

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CNNE Technology (Dongguan) Co., LTD

Founded in 2006, CNNE Technology (Dongguan) Co., LTD is a national high-tech enterprise integrating R&D, manufacturing and sales of green and healthy energy industry application solutions.

Since its establishment, the company has been committed to scientific research and innovation, bravely climbed the technological peak,  and maintained its core competitiveness for many years in the key technologies of green and healthy energy equipment manufacturing.

In 2018,  the first "electrode research institute" in China was established by investment under the name of the company.  As of April 2022, in the institute there are 2 full-time doctors and more than 20 full-time postgraduates, moreover,  more than 10 doctors and more than 50 postgraduates who cooperate with domestic and foreign universities and scientific research institutions. Meanwhile the company has established long-term scientific research cooperation with more than 100 enterprises,  and obtained 38 patents.

The company has strong R&D power in product design, material selection, construction of engineering prototypes, effect verification and functional improvement, also is capable to provide customers with comprehensive solutions,  mainly including: precious metal electrodes,  proton exchange membranes, PEM membrane electrodes, electrolytic cells, and one-stop solutions for electrolysis systems.

Service industries include: hydrogen energy,  fuel cells,  environmental protection,  medical care,  health care,  disinfection,  agriculture,  food,  water and gas purification,  green electricity etc.

The company has served more than 10,000 customers in dozens of countries and regions around the world,  such as the United States,  Germany,  Canada,  Japan,  and South Korea.

After years of hard work, the company has obtained "ISO9000: 2015 Quality Management System" certification,  "Intellectual Property Management System" certification,  and has been awarded honor certificates such as "National High-tech Enterprise",  "Above Scale Enterprise",  "Contract-honoring and Promise-keeping"  for consecutive years.

CNNE Technology (Dongguan) Co., LTD shoulders the noble mission of "Refining the national energy engine and protecting life on earth" and makes contribute to realizing the country's dual-carbon goal.  We CNNE team will always been assisting with the country,  chasing the Chinese dream!

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FAQ of electrolyzer electrolytic cell Titanium Electrode
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