Kinetics of reduction of ICUMSA color of sugarcane juice by ozonation in reactor RPA/CSTR to produce sulfur-free of white sugar

• Grant number: 14/03295-4
• Support Opportunities: Scholarships in Brazil - Master
• Effective date (Start): December 01, 2014
• Effective date (End): February 29, 2016
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Claudio Lima de Aguiar
• Grantee: Nathália Torres Corrêa Magri
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The clarification of sugarcane juice is one of the most important steps in the whole process of sugar production, this because the color of the final sugar determines your sales price in the market as well as its quality. However, besides having a color reduction process which ultimately makes a sugar quality, it is necessary that this process does not generate waste or to the environment, and no toxic residues are present in the final product. Thus, the search for alternative processes sulfitation - which is the current procedure for clarification of sugarcane juice production and sugar crystal white - became more frequent and between these alternative processes are called POA oxidative processes alternative). In this sense, the Research Group Hugot-Bioenergy ESALQ - USP, for nearly five years has studied the impact of the adoption of new technologies in the process of clarification of sugarcane juice, especially those involving industrial use ozone and hydrogen peroxide with or without combination with metal catalysts. Therefore, this research project aims to bring additional contribution to the information previously obtained in other research projects such as FAPESP 2009/54635-1, FAPESP 2009/54371-4, FAPESP 2010/15895-5, FAPESP 2011/12384- 2, FAPESP 2012/15618-7, FAPESP 2013/04047-1 and verify the compositional changes possibly occurring when using ozone reactors RPA/CSTR (Perfectly Stirred Reactor/Continuous Stirred-Tank Reactor) as an alternative process to clarify the broth sugarcane by eliminating or reducing the amount of sulfite (generated from the burning of sulfur), in what has been called sulfur-free processes. (AU)