Cane Sugar Refining - Purolite

47
SWELLING: The expansion of an ion
exchange bed which occurs when the
reactive groups on the resin are converted
into certain forms.
THROUGHPUT VOLUME: The amount of solution
passed through an exchange bed before
exhaustion of the
UPFLOW: The operation of an ion exchange
unit in which solutions are passed in at the
bottom and out at the top of the container.
VALANCE: A measurement of the number
of atoms or ions of hydrogen it takes to
combine with or be replaced by an element
or radical. In short, the number of positive
or negative charges of an ion.
VOID VOLUME: The space between particles
of ion exchange resins in a settled bed, also
called interstitial volume.
WEAK ELECTROLYTE: The equivalent of weakly
acidic or weakly basic resins not capable of
splitting neutral salts.
ZEOLITE: A mineral composed of hydrated
silicates of aluminum and sodium or
calcium. The term has been used, sometimes
improperly, to describe softening
done by synthetic ion exchange resins.
Cane Sugar Refining with Ion Exchange Resins