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Novozymes launches world’s first biological foam control for sugarcane ethanol; up to 20% cost reduction
November 10, 2016
Novozymes has launched Fermax, an enzyme protease that prevents foam development during the sugarcane ethanol fermentation process, while delivering improved control and replacing chemicals. For an average size plant, trialing partners also experienced a cost reduction of up to 20% when using Fermax, as compared with use of chemicals.
Foam develops during the fermentation process as the yeast produces ethanol and carbon dioxide. The carbon dioxide creates foam, which can cause overflow of the fermentation tank and lead to production losses. Excessive foaming also forces plants to increase fermentation time and operate at lower capacity. Ethanol producers typically use a combination of anti-foam and dispersant chemicals to reduce the formation of foam, but their performance varies according to process and feedstock conditions.