Whey Protein Concentration & Desalination By Membrane Separation

Membrane separation technology has become a preferred solution for whey protein processing in modern food industry. It efficiently completes concentration, desalination and purification for whey liquid without high‑temperature evaporation, protecting natural protein activity.

In whey processing, after membrane filtration, feed liquid is divided into two streams: retentate (concentrate) and permeate (filtrate).

The retentate is the whey protein concentrate, milky white liquid with enriched protein content. Most protein molecules are intercepted by the membrane layer. Salts, small‑molecule ash and water pass through the membrane to form clear permeate filtrate.

Traditional evaporation process consumes large amounts of steam and may cause protein denaturation under long‑time heating. Nanofiltration / ultrafiltration membrane system works at room temperature. It removes excess mineral salt while concentrating whey protein. It cuts energy cost and keeps original protein quality.

This membrane process is widely used for whey protein production, also applicable for soybean peptide, plant protein extract and other food liquid purification. Manufacturers can get higher‑value protein concentrate and reduce wastewater discharge at the same time.

Our membrane system supports custom flux and membrane configuration according to customers’ lab test sample results. Lab pilot test is available to verify concentration factor, desalination rate and final protein content before full‑scale factory equipment investment.