SUPRA Depth Filtration Technologies

We understand the challenges of filtering hard seltzer. The base product of hard seltzer is usually from neutral spirits, wine, malt or sugar. Most hard seltzers are clear, colorless beverages. But achieving a colorless, flavorless base is a crucial step that poses considerable challenges:

• Hard seltzer can be hazy and have a slight color after fermentation.
• Fermentation by-products can negatively affect flavor and odor
• Traditional Powdered Activated Carbon (PAC) beds, although effective at decolorization, odor and, trace impurity removal, are labor intensive, have a long contact time, and have significant cleaning costs.

Each of these factors influences the taste profile of hard seltzer. Therefore, the selection of the right filtration technology is crucial.

Filtration of various bases is possible with Pall's SUPRA lenticular module solutions. Our SUPRApak™ lenticular modules offer sheet-based filtration with a filter area higher than most lenticular modules and a unique flow configuration that maximizes filtration and adsorption.

The use of bulk powdered activated carbon (PAC) has significant drawbacks due to the handling of bulk carbon powder, equipment cleaning, and time and costs associated with carbon removal from the process.  The new Seitz® AKS FB immobilized carbon filter media addresses these concerns and increases the throughput of your hard seltzer by incorporating activated carbon within a matrix of cellulosic fibers.

Carbon particles are protected from shedding downstream by pairing immobilized carbon media with downstream protective filter papers.

Additionally, our activated carbon filtration fixes color and flavor issues, so that the intermediate product can be blended and added with aroma to produce a crystal clear and pure seltzer that offers great taste and refreshens in the absence of disturbing off-flavors.

SUPRApak Depth Filter Module

AKS FB Depth Filter Technologies