Method of converting brines to useful products

Details Method of converting brines to useful products Method of converting brines to useful products

1987-01-30

1988-07-05

Wyse, Tom

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, 210726, 210737, 210912, 423184, C02F 152

Patent

active

047553030

ABSTRACT:
A method for recovering useful animal feed supplements and a purefied brine from saline waters, such as oil and gas field brine wastes, involving the steps of adding an oxidizing agent to the brine to convert the divalent ferrous ions in the brine to ferric ions, then adding phosphoric acid in an amount approaching the stoicheometric equivalent of the divalent calcium ion the brine, then raising the pH of the brine to between 9 and 10 utilizing a material selected from the group consisting of sodium hydroxide or a mixture of sodium hydroxide and sodium carbonate followed by filtration to extract the feed supplement and thereafter adding a sufficient amount of hydrochloric acid to bring the pH to 7 and then crystallizing the sodium chloride from the resultant purefied brine solution.

REFERENCES:
patent: 3262865 (1966-07-01), Waters
patent: 4016075 (1977-04-01), Wilkins
patent: 4405463 (1983-09-01), Jost et al.
patent: 4465598 (1984-08-01), Dorlington et al.
patent: 4634533 (1987-01-01), Somerville et al.

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