Regeneration compositions for cationic exchange resins
AssigneeJacam Chemical Partners, Ltd.
InventorNajib H. Zaid
Life of this patent
Estimating the term…
Abstract
Improved compositions for the treatment and regeneration of ion exchange resin beds typically used in water softening systems are provided, which possess enhanced iron sequestering capabilities. The compositions include citric acid and a salt of citric acid, together with an iron sequestration-enhancing amount of an agent including a quantity of a source of gluconic acid or salt of gluconic acid. Preferred agents include gluconic acid, the alkali metal gluconates, glucono lactone and mixtures thereof. The compositions are advantageously formulated as dry products, which can be mixed with a preponderant amount of sodium chloride to yield regenerating media.
Claims25
In a composition for addition to sodium chloride to give a regenerating medium for cation exchange resin including individual quantities of citric acid and a salt of citric acid, the improvement which comprises an agent present in an amount for enhancing the iron sequestering capability of said composition, said agent including a quantity of a source of gluconic acid or salt of gluconic acid.
A composition for regenerating a cation exchange resin comprising:
- a quantity of sodium chloride;
- and
- respective minor amounts of citric acid, a salt of citric acid and an agent including a quantity of a source of gluconic acid or salt of gluconic acid, all of the foregoing being mixed with said sodium chloride.
Dependencies are inferred from the claim text.