The more than 60-year membrane technology continues to contribute to innovation. Combined with Tetra Pak’s initiatives such as a water competence center and strategic partnerships, the technology can help improve dairies’ and other food producers' green profile and create new, highly refined products.
Since the Danish Sugar Factories began experimenting with membrane filtration in the 1960s, the technology has undergone rapid development. Today, the technology is an integral part of many dairy processes because it can precisely separate the milk components, thus offering the dairies opportunities to combine them into new products and expand their markets.
Lactose-free milk, cost-efficient production of skyr, concentrated yogurt, feta cheese, and a wide range of ingredients have seen the light of day due to membrane filtration. And the development continues.
We are going to see even more specialty products, e.g. with increased protein content, and further refinement of ingredients for the food industry based on whey and milk, which is our core business – and a fast-growing market. Also, we examine the possibilities of filtrating plant-based foods and beverages.
In-house Water Competence Center
The dairy industry is a heavy user of water. The old, small dairies, which in most cases are history now, were located close to streams for easy access to fresh water and drainage of sewage. However, as dairies grow and are challenged by more environmental requirements, focus on sustainability is increasing.
Milk consists of 87 % water, and the Nordic dairies are now good at exploiting the surplus water they generate. Worldwide, however, there are untapped opportunities for saving water; especially in countries where the cost of drinking water and wastewater is high.
Food safety legislation in relation to water recycling in the production is, however, a challenge in many countries, as the legislation has not kept up with the technological development. Therefore, we have established a water competence center, which focuses on servicing our customers with sustainable solutions, an important part of which is optimizing water consumption.
Continuous optimization creates new opportunities
The heart of the filtration technology is the membranes. In the 1960s, plate and frame membranes were the preferred solution. Today, they are used primarily for high-viscosity products, while spiral-wound membranes, which were introduced a few decades later, generally is the preferred solution.
Both types are continuously tested and optimized.
Part of the test is to install different suppliers' membranes with customers and follow the output over time. The test provides Tetra Pak with the data needed to choose the right membrane and thereby optimize the utilization of the raw material and membrane life. In the future, we will see even more precise membrane pores leading to higher efficiency.
There is no indication that competing technologies will replace the membrane technology. In return, there is a need to complement the technology with others such as chromatography and electrodialysis to offer the food industry opportunities to develop still more sophisticated products. In other words, projects are becoming more complex. Therefore, we have established strategic partnerships with other technology suppliers.
As part of Tetra Pak, we also provide end-to-end solutions and thus have a large interface with the market. This is an advantage both when it comes to building new dairies as well as in connection with counseling of existing dairies. And on all fronts, Tetra Pak is working on innovation and sustainability along the value chain.
Various types of membrane filtration
Membrane filtration can be installed in all dairies and in plant-based food productions, either for production of specialty recipes or for reuse of water from various product streams.
About Tetra Pak
Tetra Pak has more than 25,000 employees.
Customers are served locally by more than 30 market companies and 93 sales offices in Europe, the Middle East, Asia, Oceania, and the Americas.
At Tetra Pak, our approach to sustainability is shaped by our brand promise: PROTECTS WHAT'S GOOD™
We bring this promise to life by committing to protect food, to protect people, and to protect futures.
Learn more about Tetra Pak's sustainability approach.