white end refinery

The "white end refinery" refers to a sugar refinery that further purifies raw sugar to produce high-quality white sugar. This process typically involves dissolving the raw sugar, clarifying and decolorizing it, and then recrystallizing it. Small "white end" refineries are sometimes built adjacent to cane-processing plants, utilizing excess energy from bagasse burning. Most large-scale refining occurs in consuming regions, producing various sugar products like granulated, powdered, and brown sugars.12

The initial step in refining is affination, where raw sugar crystals are mixed with a heavy syrup to remove the molasses coating. This is followed by melting the sugar into a liquor. Clarification uses processes like phosphatation or carbonatation to remove impurities. Decolorization employs adsorbents like activated carbon or ion-exchange resins. Finally, the purified liquor is boiled to crystallize into white sugar, which is then dried and packaged.13