USE CELLULOSE FOR CLEANING CONCENTRATED SUGAR SOLUTIONS

• Main Authors: N. G. Kul’neva, Y. I. Posledova, A. A. Efremov, Y. S. Kutsenko
• Format: Article
• Language: Russian
• Published: Voronezh state university of engineering technologies 2015-07-01
• Series: Vestnik Voronežskogo Gosudarstvennogo Universiteta Inženernyh Tehnologij
• Subjects: beet sugar production; syrup; cellulose; dyes
• Online Access: https://www.vestnik-vsuet.ru/vguit/article/view/647

Summary. Producing high quality intermediate products in the boiling-crystallization station is an actual problem of sugar production. In the production of white sugar brown sugar syrup is not further purified that decreases the quality of the end product. Studies have been conducted using cellulose as an adsorbent for the purification of concentrated sugar solutions, having affinity to dyes and other impurities. Research have been carried out with the intermediate products of the Lebedyan sugar plant. Test results have shown cellulose ability to adsorb the dyes in sugar production. The influence of the adsorbent concentration and the mass fraction of solids in the syrup on the decolorization effect has been studied; rational process parameters have been obtained. It has been found that proceeding an additional adsorption purification of brown sugars syrup allows to reduce the solution color, increase the amount and quality of the end product. Adsorbing means, received from production wastes on the basis of organic resources, have many advantages: economical, environmentally friendly for disposal, safe to use, reliable and efficient in use. Conducted research on using cellulose as adsorbent for treatment of concentrated sugar solutions, having an affinity for colouring matter and other impurities. The experiments were carried out on the intermediates Lebedyanskiy sugar factory. The test results showed the ability of cellulose to adsorb coloring matter of sugar production. To evaluate the effect of bleaching depending on the mass fraction of dry substances prepared yellow juice filtration of sugar concentration of 55, 60, 65 % with subsequent adsorption purification of cellulose. The results of the experiment built adsorption isotherm of dyestuffs. The influence of the concentration of the adsorbent and a mass fraction of solids of juice filtration on the efficiency of decolorization obtained by rational parameters of the process. It is established that the effect of bleaching decreases with increasing concentration of juice filtration due to high viscosity of the solution. Constructed a nomogram for determining the flow rate of the adsorbent depending on the concentration of the production of furniture, which is of practical importance. Studies have shown that the additional adsorption purification of sugar juice filtration yellow reduces color solutions, to improve the yield and quality of finished products.