Purification of brines with hydrous metal oxide ion exchangers
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United States of America Patent
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Aug 8, 1989
Issued Date -
N/A
app pub date -
Jul 19, 1988
filing date -
Apr 11, 1986
priority date (Note) -
Expired
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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.
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