Purification of brines with hydrous metal oxide ion exchangers

Details Purification of brines with hydrous metal oxide ion exchangers Purification of brines with hydrous metal oxide ion exchangers

1988-07-19

1989-08-08

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210679, 210687, 4231795, 423181, B01D 1504

Patent

active

048550590

ABSTRACT:
A process for the substantial removal of calcium or other divalent ions from natural or industrial brines containing high levels of another ion comprising (a) adjusting the pH of the brine to an alkaline pH of 9 to 11 with an alkaline material; and (b) contacting the brine for at least 5 minutes with an ion exchanger consisting essentially of a hydrous oxide selected from hydrous oxides of zirconium, titanium, tin, molybdenum, tungsten, thorium, niobium or tantalum and mixed hydrous oxides of these aforementioned metals at a temperature between ambient and about the boiling point of the brine being treated.

REFERENCES:
patent: 3382034 (1968-05-01), Kraus
patent: 4405574 (1983-09-01), Lee et al.
patent: 4569765 (1986-02-01), Beale

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