Disc Stack Centrifuge for Clarification and Concentration of Plant Extract
Plant extracts are widely used in food, health care products and cosmetic industries. The crude extract after leaching contains a large amount of fine suspended residues, colloids and macromolecular impurities, which affect the clarity, stability and subsequent membrane filtration load. Disc stack centrifuge is a high-speed phase separation equipment relying on centrifugal force to realize rapid solid-liquid separation. This paper introduces its separation principle, process configuration, operating points, advantages compared with plate frame filter press, and its combined application with membrane system. It also summarizes the control strategies for reducing extract loss and improving product quality.
Application of Hollow Fiber PVDF Membrane for Wastewater Recovery in Food Processing
Food processing wastewater usually contains residual protein, sugar, starch and fine suspended solids. Direct discharge will cause pollution and waste of usable resources. Hollow fiber PVDF membrane has outstanding chemical resistance, good tensile strength and strong anti-fouling performance, which is widely used in wastewater recovery of food factories. This article introduces the working principle, process flow, operating parameters, pollution control methods and practical benefits of this membrane system, and compares it with traditional sedimentation and sand filtration. It also analyzes its application limitations and optimized directions for stable long-term operation.
Membrane Separation for Resveratrol Purification
Resveratrol is a heat-sensitive polyphenol antioxidant widely sourced from botanical raw materials. Traditional thermal concentration tends to destroy its active structure and lower product yield. Membrane separation technology provides an effective low-temperature purification route for resveratrol production. Combined tubular ultrafiltration and nanofiltration processes remove macromolecular impurities and concentrate target components without phase change. Tubular membrane equipment features strong anti-fouling performance, suitable for viscous plant extracts. Small and mid-pilot membrane systems enable parameter testing and process optimization. This technology reduces energy consumption, improves resveratrol recovery and purity, and supports clean manufacturing for nutraceutical and cosmetic raw material production.
