Recovery of heavy metals from high salinity geothermal brine.
Farley EP; Watson EL; MacDonald DD; Bartlett RW; Krishnan GN
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, Contract J0188076, 1980 Jan; :1-130
Large quantities of high salinity geothermal brine from the Salton Sea Geothermal Area, California, contain significant amount of PB, ZN, FE, and MN. A simple method of treating large volumes of spent brine is required to economically recover the valuable nonferrous metals. Results from a 2-year laboratory investigation of sulfide precipitation are discussed, including the condition for achieving maximum precipitation of the valuable heavy metals while minimizing precipitation of FE and MN, which have little economic value. In the first year, the study was initiated and guided by computer thermodynamic modeling. The second year has been devoted to the operation and optimization of the sulfidation process at a continuous bench scale.
Mining-industry; Geology; Geophysics; Thermal-properties; Lead-compounds; Zinc-compounds; Iron-compounds; Manganese-compounds; Sea-water; Nonferrous-metals; Thermodynamics; Heavy-metals
7439-92-1; 7440-66-6; 7439-89-6; 7439-96-5
CP; Final Contract Report
NTIS Accession No.
OFR 91-81; Contract-J0188076
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, Contract J0188076
SRI International, Menlo Park, California