Industrial Decanter Centrifuges for Separation of Crude Glycerol and Fatty Acids in Biodiesel Production


Industrial Decanter Centrifuges for Separation of Crude Glycerol and Fatty Acids in Biodiesel Production


Biodiesel production has gained significant momentum in recent years as a sustainable and environmentally friendly alternative to traditional fossil fuels. One crucial step in the production process is the separation of crude glycerol and fatty acids from the biodiesel mixture. This separation is achieved using industrial decanter centrifuges. These centrifuges play a pivotal role in ensuring the high purity and quality of the final biodiesel product. In this article, we will explore the working principle, benefits, and applications of industrial decanter centrifuges in the separation of crude glycerol and fatty acids in biodiesel production.

I. Working Principle of Industrial Decanter Centrifuges

Industrial decanter centrifuges rely on the principle of sedimentation and centrifugal force to separate different components in a mixture based on their density. The equipment consists of a rotating drum that is accelerated to high speeds. When the crude glycerol and fatty acid mixture is introduced into the decanter centrifuge, the denser components such as glycerol settle at the bottom while the lighter components like fatty acids move towards the periphery due to the centrifugal force. This differential separation allows for the efficient extraction of crude glycerol and fatty acids from the biodiesel feedstock.

II. Benefits of Industrial Decanter Centrifuges

1. High Separation Efficiency: Industrial decanter centrifuges offer excellent separation efficiency, ensuring the production of biodiesel with minimal impurities. The centrifugal force generated inside the equipment enables rapid and effective separation of crude glycerol and fatty acids, leading to high-quality biodiesel.

2. Continuous Operation: Unlike other separation methods, decanter centrifuges facilitate continuous operation. This feature is particularly valuable in large-scale biodiesel production plants where uninterrupted processing is essential. Continuous operation minimizes downtime and increases overall productivity.

3. Scalability: Industrial decanter centrifuges are available in a range of sizes, allowing for scalability based on production requirements. Whether it is a small-scale biodiesel production facility or a large industrial plant, decanter centrifuges can be tailored to meet specific production demands.

4. Energy Efficiency: Decanter centrifuges have been designed with energy efficiency in mind. These machines are equipped with advanced control systems and optimized designs that reduce power consumption and operating costs. The energy-efficient nature of industrial decanter centrifuges makes them a sustainable choice for biodiesel producers.

5. Versatile Applications: Industrial decanter centrifuges have a wide range of applications beyond biodiesel production. They are extensively used in industries such as oil and gas, chemical, food processing, and wastewater treatment. This versatility makes these centrifuges a valuable investment with multiple areas of utilization.

III. Applications in Biodiesel Production

Industrial decanter centrifuges find widespread use in various stages of biodiesel production. Some key applications include:

1. Crude Glycerol Separation: The primary role of decanter centrifuges in biodiesel production is the separation of crude glycerol from the reaction mixture. This step ensures the isolation of pure glycerol, which can be further processed for various applications like pharmaceuticals and cosmetics.

2. Fatty Acid Recovery: Decanter centrifuges facilitate the recovery of fatty acids generated during transesterification, the process involved in converting fats or oils into biodiesel. The separation of fatty acids allows for their reuse or potential marketing as valuable byproducts.

3. Water Removal: Biodiesel production often involves the presence of water in the reaction mixture. Decanter centrifuges aid in efficient water removal, ensuring the production of high-quality biodiesel with low water content.

4. Purification: Industrial decanter centrifuges are instrumental in the purification of biodiesel by removing impurities such as soap, methanol, catalyst residues, and glycerol traces. This purification step enhances the overall quality and stability of the biodiesel product.

5. Process Optimization: Biodiesel producers can optimize their processes by integrating decanter centrifuges at critical stages. The efficient separation provided by these centrifuges allows for enhanced process control and productivity, contributing to overall cost-effectiveness.


Industrial decanter centrifuges play a crucial role in the separation of crude glycerol and fatty acids in biodiesel production. With their high separation efficiency, continuous operation, scalability, energy efficiency, and versatile applications, these centrifuges have become an essential component of biodiesel production plants. Their ability to efficiently extract glycerol and fatty acids ensures the production of high-quality biodiesel with minimal impurities. As the demand for sustainable energy solutions continues to rise, industrial decanter centrifuges will undoubtedly remain an integral part of the biodiesel industry, contributing to a more eco-friendly future.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English