The membrane separation process treats substance mixtures with different membrane pore sizes permeating them to separate and purify them. At CD BioSciences-GreenChemistry, we have extensive sophisticated R&D facilities and qualified personnel allowing the company to meet every client's requirement to achieve perfect chemical separation and purification.
Membrane separation is a technique in which a mixture of molecules of different particle sizes is selectively separated at the molecular level when passing through a semi-permeable membrane (also known as a separation or filtration membrane). Semi-permeable membrane walls are covered with small holes, the pore size of these holes determines which molecules can pass through and which molecules are retained. Membrane separation technology is highly selective, simple to operate, widely applicable, and low in energy consumption. At the same time, it is also a typical physical separation process, without chemical reagents and additives, the product is not contaminated.
Fig.1 Conceptual overview diagram for dehydration of biomaterials by membrane separation. (Diepenbroek, et al., 2024)
| Classification | Membrane Separation Types | Applications |
| By separation precision | Microfiltration (MF) membrane separation | For the removal of suspended solids, small particles, bacteria, etc. from water. |
| Ultrafiltration (UF) membrane separation | For the removal of macromolecules such as suspended solids, colloids, proteins, and microorganisms in solution. | |
| Nanofiltration (NF) membrane separation | For the removal of divalent and trivalent ions, organic matter, microorganisms, colloids, heat sources, viruses, etc. | |
| Reverse osmosis (RO) membrane separation | For the removal of dissolved salts or contaminated impurities in water. | |
| By membrane structure | Porous membrane separation | For removing suspended matter, macromolecular substances, and minute particles in solution. |
| Dense membrane separation | For electrodialysis. |
As a leader in the field of green chemistry, CD BioSciences-GreenChemistry has mastered a series of advanced membrane separation technologies and is committed to providing clients with precise and customized chemical separation and purification services to ensure the quality of their products and production efficiency. Below are the precise steps we take to separate and purify chemicals using membrane separation:
Preliminary Preparation
First, we conduct a detailed analysis of the chemicals to be separated to understand their physical and chemical properties, as well as the specific requirements for separation and purification. Based on this information, we then select the appropriate membrane material and membrane separation technology.
Selection of Membrane Materials
We select appropriate membrane materials, such as polymer, metal, or ceramic membranes, based on the nature of the chemicals (e.g., corrosivity, temperature sensitivity, etc.). Polymer membranes are usually used for general separation tasks, while metal and ceramic membranes are suitable for special environments due to their high temperature and corrosion resistance.
Membrane Separation Process
We pre-treat the chemical substances to be separated before separating them. Depending on the nature of the chemicals, we offer suitable membrane separation methods such as microfiltration, ultrafiltration, reverse osmosis, dialysis, electrodialysis, or nanofiltration. In the membrane separation process, chemicals are selectively permeated or retained by the membrane depending on their molecular size and polarity.
Quality Assessment
We perform rigorous quality assessments of separated and purified chemicals, including purity testing, impurity analysis, and performance testing. These test data are used to evaluate whether the membrane separation results meet client needs.
As a leading green chemistry company, CD BioSciences-GreenChemistry specializes in providing several innovative services including membrane separation. Not only do we have a professional team and advanced technology, but we are also committed to providing customized solutions according to the specific needs of clients to promote green and sustainable development. We invite clients from all walks of life to contact us at any time to explore the infinite possibilities of green chemistry.
Reference
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