15 research outputs found
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Processing of geothermal brine effluents for injection
The handling and disposal of brine effluents is a critical part of any geothermal conversion process. Brine effluents from the San Diego Gas and Electric/Department of Energy--Geothermal Loop Experimental Facility were characterized for particulate concentration and chemical composition. Bench scale tests were conducted with inorganic and organic coagulants as a means of enhancing the sedimentation process for separation and removal of suspended solids, principally amorphous silica. The effects of temperature, retention time, and pH on the precipitation of supersaturated silica, subsequent floc settling properties, and supernatant clarity were also determined. A design of a pilot scale clarifier now undergoing testing is also described
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Conditioning of geothermal brine effluents for injection: use of coagulants
The use of various chemical coagulants and flocculants with spent geothermal brine for enhancing the removal of colloidal solids prior to injection was studied. Brine at 80 to 85/sup 0/C was obtained from the injection line of the SDG and E/DOE Geothermal Loop Experimental Facility during a period of operation with Magmamax No. 1 Fluid. The solids consist primarily of an iron-rich amorphous silica and heavy metal sulfides, principally lead. Standard jar testing equipment was used to carry out the tests
Predictors of latent tuberculosis treatment initiation and completion at a U.S. public health clinic: A prospective cohort study
10.1186/1471-2458-12-468BMC Public Health12146
An Unusual Cause of Neonatal HIP Dislocation: Infantile Myofibromatosis Presenting as Developmental Dysplasia of the HIP
Stream-dominated alluvial fan and lacustrine depositional systems in Cenozoic strike-slip basins, Denali fault system, Yukon Territory, Canada
Loss of Information in Estimating Item Parameters in Incomplete Designs
incomplete designs, conditional maximum likelihood, marginal maximum likelihood, F-information, Rasch model, loss of information,