The ion exclusion .process is based on the phenomenon that certain types of ion exchange resins possess a significantly different absorptive capacity for non- ionizable compounds, such as sugar, than for ionizable compounds, such as inorganic salts. On elution from an ion exclusion column, ash and certain other impurities will emerge first, followed by sugar, which can be collected as a separate fraction.
Since no chemical reaction between resin and sugar or salts occurs, no chemical regeneration is theoretically required. This makes the process economically attractive.
A recycling technique has been devised and extensively tried out, which affords a high degree of purification of sugar products of greatly varying composition, ranging from affination syrup to both cane and beet molasses.
Theory and technique of semi-continuous and continuous systems are discussed in detail. The tabulated experimental results are critically examined.
Proceedings: CITS 1971
pdf download: CITS1971-445-465.pdf