Liqui-Cel® Membrane Contactors are widely used in the soft drink and brewing industries to Control dissolved gasses
Gas control is an important concern in the beverage industry. Oxygen in the water can oxidize flavor components and shorten the shelf life of the product. Carbon dioxide can also have an impact on taste and pH of the product. Liqui-Cel Membrane Contactors utilize a hydrophobic polypropylene membrane to remove dissolved gasses from water. Water flows on one side of the membrane and a vacuum or strip gas is passed on the other side of the membrane. By controlling the pressures of gasses in contact with the water, a highly efficient method for gas control can be achieved. Membrane contactors are widely accepted to control gas levels in liquids used in the soft drink and brewing industries. Some of the applications that membranes have been used for in these industries are listed below.

Brewing
O2 removal from blending water • Oxygen can break down the final product if it is not removed from the water used in the blending process. For this reason, O2 specifications are typically less than or equal to 10-ppb. O2 removal of pushing water • In breweries, large volumes of product is left in DE filters and piping. In order to collect and use the product, the brewery will pump water through the system to “push out” the beer. • The O2 specification here is also less than or equal to 10-ppb. Low O2 concentrations are important because the product will absorb any gasses present in the pushing water.

Soft Drinks/Coffee/Teas
Deoxygenation/Carbonation of blending water • In packaging plants, water and syrup are mixed prior to being bottled or canned. In this application, oxygen is removed from blending water prior to blending. • Carbon dioxide can also be added to liquids for precise control the CO2 levels prior to packaging. Deoxygenation of water used to brew