Use of Ozone in the Decolorization of Sugar Industry Liquors

Abstract

A method that uses ozone for the decolorization step in cane sugar refining is presented. It concerns an important and new application of ozone in the field in the cane sugar industry. Very efficient decolorization of clarified liquors was obtained at different scales. To obtain satisfactory decolorization, suitable treatment operation conditions were established. In the pilot plant study, refined sugar of high purity was obtained, which fulfilled the international quality requirements. At the laboratory scale, a kinetic study for the process has been developed in a continuous system with the use of Danckwert's model. The effective kinetic coefficient (βO₃) values were between 10⁵ and 10⁶ L/mol·s.

Keywords:

• Ozone
• Liquor Decolorization
• Sugar Industry
• Kinetics
• Rate Constants
• Pilot Plant Study
• Color Removal

Notes

15. Norma Cubana de Azúcar Refino NC: 377 2005