Process by-products into valuable goods for reuse or sale

Sweet whey is a by-product of cheese production. It has a high mineral content of 8-10 % in TDS which results in low sensoric properties and overall low value of whey. Demineralization by electrodialysis turns the low value whey into a sweet substance ready for internal reuse or up to pharmeceutical quality for use in infant nutrition.

Acid whey is a by-product of greek yoghurt, soft cheese or quark production. The high acidity with pH 4.7 - 5.3 and high mineral content of 9 - 11 % in TDS make it difficult to process. It can’t be evaporated without using special techniques and due to very low sensoric properties can’t be reused internally either.

Electrodialysis solves all the issues. After processing, the product is the same after demineralization of sweet whey and can be used in pharmaceutical-grade or food-grade products. ED can reach pH level according to customers’ needs by removing the lactic acid.

After ultrafiltration of whey, up to 95 % of the solution is rejected as permeate despite its high lactose content. The reason for rejection is very high mineral content of up to 12 % in TDS and high acidity when acid whey is filtrated.

By electrodialysis of UF permeate you prepare an edible food-grade lactose for use in confectionery, bakery or livestock feeding. Electrodialysis process removes the evaporator and spray dryer scaling issues of an untreated UF permeate.

Delactosed whey is a byproduct of lactose production. It has a high protein, high ash and low lactose content. After demineralization it can be usedfor powder production or livestock feeding, depending on the grade of demineralization.

Lactulose syrup is a feed solution of lactulose after isomerisation by chemical catalysers. There is a high mineral content due to the agents of catalysers. Electrodialysis allows their removal to receive the final product, which is then used in pharmaceutical applications.

Mother liquor is a by-product of evaporation and crystallization in lactose production. Due to a very high mineral content its sensoric properties are unpleasant and also blocks crystallization.

Electrodialysis removes the salts, which allows you to put the demineralized mother liquor back to production and increase yield.