Determination of the rate of formation of solids from hypersaline geothermal brine as a function of pH
Preliminary results obtained in the analysis of the effluent brine from the LLL four-stage flash system are reported. Of principal interest was the rate of formation of suspended solids and the rate of decrease of dissolved silicon (or silica) in the solution as a function of the pH of the effluent brine. The experiments were conducted using Magmamax No. 1 brine at the LLL Test Facility near Calipatria, California. The wellhead brine (having a pH of approximately 5.7) was acidified in the flash system to pH values of 5.0, 4.0, and 3.0, +- 0.2 pH unit, and the solids and silica in the effluent at approximately 90/sup 0/C were measured, respectively, by filtration and atomic absorption spectrophotometry. Changes in solids and silica concentration were determined after holding the brine at 90 +- 5/sup 0/C for periods of time up to one week. Data from studies of the size distribution of suspended particles in three solutions are summarized.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7080659
- Report Number(s):
- UCID-17596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
152003* -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ACIDIFICATION
BRINES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
DILUTION
DISPERSIONS
FILTRATION
FLASHED STEAM SYSTEMS
FLUIDS
GEOTHERMAL FLUIDS
Geothermal Legacy
KINETICS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PH VALUE
PHASE TRANSFORMATIONS
PRECIPITATION
REACTION KINETICS
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SOLIDIFICATION
SOLIDS
SPECTROPHOTOMETRY
SPECTROSCOPY
SUSPENSIONS