Silica Extraction at Mammoth Lakes, California

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The purpose of this project is to develop a cost-effective method to extract marketable silica (SiO{sub 2}) from fluids at the Mammoth Lakes, California geothermal power plant. Silica provides an additional revenue source for the geothermal power industry and therefore lowers the costs of geothermal power production. The use of this type of ''solution mining'' to extract resources eliminates the need for acquiring these resources through energy intensive and environmentally damaging mining technologies. We have demonstrated that both precipitated and colloidal silica can be produced from the geothermal fluids at Mammoth Lakes by first concentrating the silica to over 600 ... continued below

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6 p. (0.4 MB)

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Bourcier, W; Ralph, W; Johnson, M; Bruton, C & Gutierrez, P June 7, 2006.

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Description

The purpose of this project is to develop a cost-effective method to extract marketable silica (SiO{sub 2}) from fluids at the Mammoth Lakes, California geothermal power plant. Silica provides an additional revenue source for the geothermal power industry and therefore lowers the costs of geothermal power production. The use of this type of ''solution mining'' to extract resources eliminates the need for acquiring these resources through energy intensive and environmentally damaging mining technologies. We have demonstrated that both precipitated and colloidal silica can be produced from the geothermal fluids at Mammoth Lakes by first concentrating the silica to over 600 ppm using reverse osmosis (RO). The RO permeate can be used in evaporative cooling at the plant; the RO concentrate is used for silica and potentially other resource extraction (Li, Cs, Rb). Preliminary results suggest that silica recovery at Mammoth Lakes could reduce the cost of geothermal electricity production by 1.0 cents/kWh.

Physical Description

6 p. (0.4 MB)

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PDF-file: 6 pages; size: 0.4 Mbytes

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  • Presented at: International Mineral Extraction from Geothermal Brines Conference, Tiscon, AZ, United States, Sep 04 - Sep 06, 2006

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  • Report No.: UCRL-PROC-224427
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 894007
  • Archival Resource Key: ark:/67531/metadc883081

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 7, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • April 17, 2017, 12:21 p.m.

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Bourcier, W; Ralph, W; Johnson, M; Bruton, C & Gutierrez, P. Silica Extraction at Mammoth Lakes, California, article, June 7, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc883081/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.