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Silicone Antifoams Help Soft Drink Industry Conserve Water
Food-grade foam control agents increase productivity
The soft drink industry may have cheered the news when analysts estimated
that global per capita consumption of soft drinks will reach a record 84.5
liters in 2012, but water conservationists may not share their view given the
amount of water needed in the soft drink manufacturing and bottling processes.
In fact, the world’s largest soft drink manufacturer, Coca-Cola, says that to
produce one liter of beverage it takes approximately 1.25 liters of water for
manufacturing processes such as rinsing, cleaning, and cooling.
Considering that UNICEF estimates that 884 million people worldwide lack
access to safe drinking water, and 1.8 billion people are expected to be living
in countries or regions with absolute water scarcity by 2025, Coca-Cola,
PepsiCo and other major food and beverage corporations recognize the need to
conserve water by implementing more efficient production methods.
Coca-Cola says it is nearly halfway to its 2012 goal of a 20 percent
improvement in water consumption that it set in 2007. By 2010, PepsiCo had
achieved a more than 15 percent improvement in water use efficiency as compared
with its 2006 baseline, on its way to meeting its global goal 20 percent
reduction per unit of production by 2015.
One way to reduce water consumption is to reduce the amount of foam produced
in the manufacturing process.
“Foam can cause vessels to overflow and can require longer cleaning of
processing equipment, which not only raises maintenance costs, it takes water
to clean up,” said Don Buchalski, global marketing manager for
Dow Corning's XIAMETER® brand. “In addition, capacity is lost, making
production less efficient. Food processing time increases, productivity
decreases, and larger, more expensive equipment may be required to compensate
for the foam.”
Silicone antifoams from the XIAMETER brand are designed to safely and
efficiently eliminate problem foam in food processing applications. Eliminating
process foam can reduce water consumption, increase productivity, reduce
production costs and, consequently, save money.
Foam is made up of bubbles. Silicone antifoams disperse rapidly through the
liquid film that makes the bubble wall and, because silicone has lower surface
tension, the bubble collapses and foam disappears. Silicone antifoams have
shown to be more effective at lower use rates than some organic antifoaming
In addition to soft drink manufacturing, silicone antifoams are used in a
variety of food and beverage applications. For example, they are used during
cleaning of tanks used for process water such as at breweries; in fermentation
tanks to increase capacity, reducing foam in the resultant wastewater; during
dilution of drinks prior to and during bottling stage, reducing spillage or
loss of product; and added to powdered beverage products to prevent foaming
when mixed with liquids.
To learn more about matching the right XIAMETER brand food-grade silicone
antifoam product to a specific application, view the new selection guide.
Want to follow the XIAMETER brand online? Check us out on Facebook and Twitter.
About Dow Corning
Dow Corning (dowcorning.com) provides
performance-enhancing solutions to serve the diverse needs of more than 25,000
customers worldwide. A global leader in silicones, silicon-based technology and
innovation, Dow Corning offers more than 7,000 products and services via
® and XIAMETER® brands.
Dow Corning is equally owned by The Dow Chemical Company and Corning,
Incorporated. More than half of Dow Corning’s annual sales are outside the
United States. Dow Corning’s global operations adhere to the American Chemistry Council’s Responsible Care® initiative,
a stringent set of standards designed to advance the safe and secure management
of chemical products and processes.