Application of activated carbon in sugar industry

The main purpose of activated carbon used in the food industry is to remove pigments and their precursors, adjust fragrance, deodorize, remove colloids, remove substances that hinder crystallization, and improve product stability.

Sugar decolorization is the oldest application of activated carbon. Around the 18th century, bone charcoal and charcoal were used in the sugar industry for decolorization. activated carbon granule manufacturer  Since the 20th century, bone charcoal has been gradually replaced by activated carbon. Sugar liquid contains a variety of colored substances, such as melanoidin, caramel and iron polyphenol complexes, among which melanoidin has the greatest influence on the color value of sugar crystals.

Activated carbon has a developed pore structure and the coexistence of macropores, mesopores, and micropores, so that it can effectively remove various colored substances. It has an excellent desorption effect on melanoidin, and is therefore widely used.

In addition to decolorization, activated carbon can also remove the gum and surface active impurities in the sugar solution, thereby increasing the surface tension of the sugar solution, reducing the degree of a, reducing the foam during evaporation, and improving the cleaning speed; improving the sugar crystal and molasses seperate effect.

The activated carbon used in the sugar industry is usually called sugar charcoal. buy powdered activated carbon It is characterized by relatively developed coarse micropores, mesopores and macropores, and has a greater affinity for impurities in sugar and colored substances. . Table 8-3 lists the typical pore distribution of sugar charcoal.