Process for removing boron from brines

Details Process for removing boron from brines Process for removing boron from brines

1997-02-20

1999-08-17

Langel, Wayne

Chemistry of inorganic compounds

Boron or compound thereof

423157, C01B 3500

Patent

active

059390387

ABSTRACT:
Boron is effectively removed from brine, including lithium-containing brines, by acidifying the brine to a pH of 0.1 to 6.0 and then contacting the brine with an extraction medium comprising at least a diol having 6 to 20 carbon atoms in an aromatic solvent. The extraction medium may also contain high aliphatic alcohols and/or a phase modifier. The boron can be stripped from the boron rich extractant medium by a re-extraction stage utilizing an aqueous alkaline solution.

REFERENCES:
patent: 2969275 (1961-01-01), Garrett
patent: 3111383 (1963-11-01), Garrett et al.
patent: 3424563 (1969-01-01), Grinstead
patent: 3493349 (1970-02-01), Schiappa et al.
patent: 3855392 (1974-12-01), Folkestad et al.

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