Effect of Aluminum-Based Colloid Solutions on Purification of Products of Sugar Production

Abstract

The work was aimed at the evaluation of possibility of using the additional reagents in preparation of a feed water for extraction of sucrose from the beet slices. As an additional reagent, a stable high-viscosity suspension applying aluminum nanoparticles as a precursor was used. At the first stage, the aluminum nanopowder was produced by the joint deposition of metal and alkali metal halogenide (NaCl) from the gas phase. Then, the method of dispersion of these powders into composition of PEGs, developed by the authors, was used for the long-time stabilization of nanoaluminum in the form of a colloid solution. As the given system, like any colloid, will try to agglomerate under the effect of external factors or time, then to prevent this phenomenon, a rapid cooling of the colloid solution is used at the last stage, thus producing the colloid solution of a high viscosity.

At the second stage, the feed water, produced in the laboratory conditions by extraction of desugarized slices, was used as an object of investigations. The main characteristics of quality were determined in it: content of solids, sucrose, and the purity (ratio of sucrose content to content of solids, in %) was calculated. The content of protein and pectin (as main components of water colloid fraction) was also determined.

During experiments the effectiveness of agents, containing aluminum in nanoform on the degree of removal of elements of the colloid dispersity, was shown in the process of preparation of the feed water for repeated application in the process of sucrose extraction from the beet slices.