Efficient extraction of alginate and carrageenan from seaweed
Seaweed is rapidly emerging as a key ingredient in sustainable food products, functional ingredients, and eco-friendly packaging solutions. Rich in hydrocolloids such as alginate and carrageenan, it offers a versatile source of gelling, thickening, and stabilising for the food and beverage industry. The global seaweed market is projected to grow from $9.39 billion in 2025 to $23.92 billion by 2035 (CAGR ~9.8%), driven by demand for plant-based nutrition, bio-based chemicals, and sustainable food additives. This growth is an opportunity but extracting these valuable compounds remains a significant challenge for processors.
After hydrocolloid extraction, the residual biomass is a slimy, fibrous pulp that quickly clogs traditional static screens. This screen blinding leads to production slowdowns, lower yields, and increased product loss. Maintaining consistent product quality is also critical, as interruptions in hydrocolloid extraction can affect gel strength, viscosity, and purity, a key factor for both food-grade and industrial applications.
Our Russell Liquid Solid Separator™ is designed to optimize seaweed extraction and hydrocolloid recovery. Using high-speed centrifugal action, the separator continuously rotates and drives the product towards the mesh. The flexible properties of the mesh prevents blockages and maintains a constant flow of liquid extraction. This ensures maximum recovery of high-value alginate and carrageenan without interruption, helping manufacturers meet both production targets and quality standards.
In addition to liquid extraction, the liquid solid separator efficiently dewaters the remaining seaweed pulp. This extracted biomass can be re-purposed as a co-product like fertiliser, animal feed, or a base for bio-based packaging materials. This approach supports sustainability goals while adding additional revenue streams for seaweed processors.
With its food-grade construction, hygienic design, and easy-to-clean components, our Russell Liquid Solid Separator™ is built for continuous operation in demanding food and beverage environments. Its robust performance ensures long-term reliability even with high-volume, viscous seaweed slurries, reducing downtime and maintenance costs.
For seaweed processors, investing in advanced seaweed extraction equipment delivers measurable benefits and additional value from by-products. By combining efficiency, sustainability, and reliability, our Russell Liquid Solid Separator™ ensures that every part of the seaweed production is optimally utilised.
Speak to our experienced sales engineers about how our equipment can improve your seaweed extraction process and by-product value. Contact Russell Finex today.
