This work evaluates, develops and demonstrates flexible, scalable mineral extraction technology for geothermal brines based upon solid phase sorbent materials with a specific focus upon rare earth elements (REEs). The selected organic and inorganic sorbent materials demonstrated high performance for collection of trace REEs, precious and valuable metals beyond commercially available sorbents. This report details the organic and inorganic sorbent uptake, performance, and collection efficiency results for La, Eu, Ho, Ag, Cu and Zn, as well as the characterization of these select sorbent materials. The report also contains estimated costs from an in-depth techno-economic analysis of a scaled up separation process. The estimated financial payback period for installing this equipment varies between 3.3 to 5.7 years depending on the brine flow rate of the geothermal resource.

The work evaluates, develops and demonstrates flexible, scalable mineral extraction technology for geothermal brines based upon solid phase sorbent materials with a specific focus upon rare earth elements (REEs). The selected organic and inorganic sorbent materials (silica and MOF) demonstrated high performance for collection of trace REEs, precious and valuable metals beyond commercially available sorbents. This report details the silica and MOF sorbent uptake, percent removal, and distribution coefficient results for Nd, Eu, Dy, Y and Ce, as well as the characterization of these select sorbent materials. The report also contains estimated costs from an in-depth technoeconomic analysis of a scaled up separation process. The estimated financial payback period for installing this equipment varies between 3.3 to 5.7 years depending on the brine flow rate of the geothermal resource.

The work evaluates, develops and demonstrates flexible, scalable mineral extraction technology for geothermal brines based upon solid phase sorbent materials with a specific focus upon rare earth elements (REEs). The selected organic and inorganic sorbent materials (silica and MOF) demonstrated high performance for collection of trace REEs, precious and valuable metals beyond commercially available sorbents. This report details the silica and MOF sorbent uptake, percent removal, and distribution coefficient results for Nd, Eu, Dy, Y and Ce, as well as the characterization of these select sorbent materials. The report also contains estimated costs from an in-depth technoeconomic analysis of a scaled up separation process. The estimated financial payback period for installing this equipment varies between 3.3 to 5.7 years depending on the brine flow rate of the geothermal resource.

The work evaluates, develops and demonstrates flexible, scalable mineral extraction technology for geothermal brines based upon solid phase sorbent materials with a specific focus upon rare earth elements (REEs). The selected organic and inorganic sorbent materials demonstrated high performance for collection of trace REEs, precious and valuable metals. The nanostructured materials typically performed better than commercially available sorbents. Data contains organic and inorganic sorbent removal efficiency, Sharkey Hot Springs (Idaho) water chemistry analysis, and rare earth removal efficiency from select sorbents. The Sharkley Hot Springs water chemistry presented includes spiked levels of REEs.

The work evaluates, develops and demonstrates flexible, scalable mineral extraction technology for geothermal brines based upon solid phase sorbent materials with a specific focus upon rare earth elements (REEs). The selected organic and inorganic sorbent materials demonstrated high performance for collection of trace REEs, precious and valuable metals. The nanostructured materials typically performed better than commercially available sorbents. Data contains organic and inorganic sorbent removal efficiency, Sharkey Hot Springs (Idaho) water chemistry analysis, and rare earth removal efficiency from select sorbents. The Sharkley Hot Springs water chemistry presented includes spiked levels of REEs.

Study of rare earth element (REE) uptake from geothermal brine simulant by column loading, metal recovery through stripping, and regeneration of column for re-loading. Simulated brine testing.

Solution chemical analysis data for magnetic core shell sorbent materials. Deionized water and brine solutions were spiked with five rare earth elements and the solutions analyzed after approximately 5 minutes exposure to the sorbent particles.

Solution chemical analysis data for magnetic core shell sorbent materials. Deionized water and brine solutions were spiked with five rare earth elements and the solutions analyzed after approximately 5 minutes exposure to the sorbent particles.

A study comparing the REE sorption characteristics of fresh ligand-based sorption media and media partially loaded with REEs when exposed to a simulated geothermal brine with known mineral concentrations, REE7. Sorption rates were tested using microcosm shaker tests. Results suggest that preferential REE sorption is greater for fresh media, but this preference differs between elements.

A study comparing the REE sorption characteristics of fresh ligand-based sorption media and media partially loaded with REEs when exposed to a simulated geothermal brine with known mineral concentrations, REE7. Sorption rates were tested using microcosm shaker tests. Results suggest that preferential REE sorption is greater for fresh media, but this preference differs between elements.