The use of ion exchange resin for sugar decolorization process is cost-effective.
At the same time, it can meet the color value requirements of different feed sugar liquids, and it is more flexible and efficient.
It is the process technology for the decolorization of the sugar industry.
Lanlang's Ion Exchange Resins are widely used for the cane sugar decolorization process, for cane syrups up to 2000 ICU in color. These resins have high capacity and an internal surface area designed for efficient low- and high-molecular-weight color bodies.
Lanlang sugar decolorization resin also has excellent physical strength and can withstand harsh operating conditions, offering longer operating lifetimes and few complications such as increased pressure drop due to bead breakage.
Ion exchange resins are an excellent choice for the final cane sugar decolorization step, offering system flexibility, as well as low cost to operate.
Many of the color bodies remaining after the cane pretreatment steps are hydrophobic and anionic. This makes macroporous strong base anion exchange resins an excellent choice to remove color, as color bodies bind to the beads through both ionic and hydrophobic interactions. Ion exchange resins offer exceptional performance and advantages in process efficiency compared to other options such as activated carbon and bone char.
Acrylic and Styrenic anion resins offer different advantages:
Acrylic resins – can remove high levels of color from syrup. The acrylic groups are only moderately selective for cane color components, enabling the adsorbed color to be efficiently removed during regeneration, leading to minimal long-term fouling. Because of this moderate selectivity, however, acrylics are typically not used to achieve very low exit color.
Styrenic resins – the best choice for the lowest colored syrup. The styrenic backbone gives high selectivity for cane sugar color components, enabling very efficient color removal and lower final color than can be achieved with acrylic resins. Multiple passes through styrenic resin beds may be needed depending on the color level of the feed sugar and exit color requirements. Styrenic resins are more prone to organic fouling because of their higher selectivity for color components, so good regeneration is key to maintaining resin performance.
While macroporous ion exchange resins are the most common choice for decolorization, gel resins can be used for decolorization in applications in which very low color syrup is required, such as liquid sugar production. The less porous internal bead structure leads to efficient decolorization but also lower decolorization capacity, so gel resins are best only for polishing of low-color feed syrup.
Get in touch with experts to help you choose the ion exchange sugar decolorization resin.