NEWS CENTER

12

2024

-

08

Electrodialysis technology: Innovative application in the separation and purification of sugars and alcohols

Author：

Electrodialysis plays an important role in the separation and purification of sugars and alcohols. Here is a detailed analysis of both aspects of the technology:

I. Overview of electrodialysis technology
Electrodialysis is a kind of technology that makes use of the selective permeability of ion-exchange membrane and the action of direct current electric field, so as to achieve the purpose of desalination, concentration, purification or purification of the solution. The technology has the advantages of simple equipment, convenient operation, relatively low energy consumption and high running economy.

Second, the application of electrodialysis technology in the separation and purification of sugars
The basic principle:
Electrodialysis technology through the selective permeability of ion exchange membrane, so that the charged ions in the solution (such as sodium ions, chloride ions, etc.) under the action of electric field directional migration, and sugars and other non-electrolytes are not trapped by the ion exchange membrane, so as to achieve the purification of sugars.

Application example:

Xylose purification: In xylose production, electrodialysis technology is often used for deacidification and desalination. Through electrodialysis treatment, the inorganic acid and salt in xylose solution can be effectively removed and the purity of xylose can be improved. At the same time, electrodialysis technology can also be combined with flocculation technology to further improve the efficiency of xylose purification.
Other sugar purification: Electrodialysis technology is also widely used in the purification process of glucose, inulin, aminosaccharides and other sugars. These sugars can also be purified in the electrodialysis process by removing electrolyte impurities from the solution.
Third, the application of electrodialysis technology in alcohol separation and purification
The basic principle:
Alcohol compounds may exist as molecules in solution or may be partially ionized. Electrodialysis technology for alcohol compounds in the form of molecules, mainly by removing electrolyte impurities in the solution to achieve separation and purification. For partially ionized alcohols, electrodialysis technology can promote their ionization and separate corresponding ions to a certain extent.

Application example:

Polyol purification: such as 1, 3-propylene glycol, ethylene glycol, propylene glycol and other polyols, often contain a certain amount of electrolyte impurities in industrial production. These impurities can be removed effectively and the purity of polyols can be improved by electrodialysis treatment.
Purification of other alcohols: Electrodialysis technology can also be used for the separation and purification of other alcohols, the specific effect depends on the ionization properties of the alcohols and the type of impurities in the solution.
4. Advantages and limitations of electrodialysis technology
Advantages:

The equipment is simple and easy to operate.
The energy consumption is relatively low, and the operation economy is high.
It has a wide range of application and can be used for the separation and purification of various sugars and alcohols.
In summary, electrodialysis technology has wide application prospect and important practical value in the separation and purification of sugars and alcohols. With the continuous progress and improvement of technology, the application of electrodialysis technology in these fields will be more extensive and in-depth.

Related Products

Electrodialysis process: separation and purification of sarcosine and sodium chloride

Electrodialysis process: separation and purification of sarcosine and sodium chloride

2024-10-24

In the electrodialysis process, the removal rate of inorganic salts is greater than 99%, which means that impurities can be efficiently removed and a high-purity sarcosine product can be obtained.

Electroplating industry waste acid treatment: membrane chromatography technology for acid and metal ions efficient recycling 电镀行业废酸处理：膜析技术实现酸与金属离子高效回收再利用

Electroplating industry waste acid treatment: membrane chromatography technology for acid and metal ions efficient recycling 电镀行业废酸处理：膜析技术实现酸与金属离子高效回收再利用

2024-10-22

he application of membrane separator technology in the treatment of electroplating waste acid has obvious advantages. It not only enables the effective recovery and reuse of acids and metal ions, but also significantly reduces treatment costs and environmental risks.

Solve the problem of electroplating wastewater, and achieve near-zero discharge by homogeneous membrane electrodialysis

Solve the problem of electroplating wastewater, and achieve near-zero discharge by homogeneous membrane electrodialysis

2024-10-17

After pretreatment, the wastewater enters the electrodialysis concentration process. In this process, the wastewater is continuously concentrated until the concentration reaches 12%.

New reform of flame retardant wastewater treatment: resource recovery and cost reduction by homogeneous membrane electrodialysis

New reform of flame retardant wastewater treatment: resource recovery and cost reduction by homogeneous membrane electrodialysis

2024-10-14

The low concentration of sodium bromide wastewater from the production of flame retardants is concentrated to more than 15% by the homogeneous membrane electrodialysis unit, and then it is recycled into the evaporation unit. The salt content of the produced fresh water is reduced to 0.1% and can be recycled. The process reduces the cost and realizes the recycling of waste resources.