Sheiko T. Improving the process of adsorptive purification of red beet juice

Dissertation is dedicated to the improvement of the process of adsorptive purification of red beet juice from unwanted impurities with the help of natural adsorbents. Effective adsorbent - shungite - has been selected. Reasonable parameters for its usage, when purifying red beet juice from pectin substances, nitrate ions, heavy metals ions and harmful microorganisms, have been determined. Kinetic dependencies have been obtained and physical constants of impurities from red beet juice adsorbed by shungite have been calculated. They can be used when designing adsorption devices. The dependency of coefficients of external and internal diffusion on temperature when adsorbing pectin substances by shungite has been researched. The optimal parameters for regenerating shungite by overheated water steam have been chosen and its frequency rate has been determined. The mathematical model for calculating a period for the beginning of phase equilibrium, when adsorbing pectin substances from red beet juice by shungite, has been elaborated, its adequacy has been established and the program for its solving has been selected. Instrument and technological schemes for producing red beet juice as well as its food grade dye have been improved; their economic efficiency has been grounded. Key words: red beet juice, food grade dye, natural dispersive minerals, shungite, adsorptive purification, kinetic dependencies, physical constants, diffusion coefficient, mathematical modeling, optimization.