Boron recovery from geothermal brines

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United States of America Patent

PATENT NO 5236491
SERIAL NO

07967811

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Abstract

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Geothermal brines are passed through a bed of an anionic resin selective to the removal of boron while maintaining a pH value between about 4 to 5.5 to load the boron on the resin from which the boron is thereafter recovered. If the brine contains large quantities of constituents have Lewis acidities greater than boric acid, these constituents are preferably removed before the boron is recovered. The invention is particularly applicable to geothermal brines of temperature above ambient, e.g., 90.degree. C. and above, such as 95.degree. C. and above.

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Patent Owner(s)

Patent OwnerAddress
BHP MINERALS INTERNATIONAL INC1190 BORDEAUX DRIVE SUNNYVALE CA 94086

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Duyvesteyn, Willem P C San Jose, CA 62 1088
Lastra, Manuel R Sunnyvale, CA 4 66
Liu, Houyuan Sunnyvale, CA 27 155

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