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CHAPTER 5: Conclusions/Recommendations SRI has demonstrated a new solid-phase extraction process to capture lithium from geothermal brines. This technology has the potential to lower the cost of geothermal production and expand the market for geothermal energy by co-producing lithium carbonate from geothermal fluids. The process is based on (1) a new hybrid sorbent made from nanostructured inorganic ion sieves embedded into a lithium-imprinted polymer, and (2) a sorbent regeneration process that uses eco-friendly carbon dioxide to form lithium carbonate. The sorbent was prepared in the form of beads that were tested in a flow-through column to demonstrate their high lithium uptake capacity and good selectivity for lithium capture even in the presence of high concentrations of other metal ions, such as sodium, potassium, magnesium, and calcium. The sorbent beads loaded with lithium were regenerated with the use of CO2 to produce an aqueous stream containing primarily lithium bicarbonate. The regenerated stream can be further polished and concentrated to produce high-purity lithium carbonate using a combination of industrially developed and commercially available technologies like ion- exchange, membrane-based separation, and crystallization. SRI demonstrated multiple lithium adsorption-desorption cycles of the sorbent using a pre- treated geothermal brine in automated system. The working capacity of the sorbent was found to be stable, thus providing an initial validation of the sorbent durability. Based on the process design, a commercial-scale plant with 20,000 ton/year production of lithium-carbonate equivalent (LCE) was designed to demonstrate process economics including CAPEX and OPEX. The estimated cost of production of lithium carbonate is less than $4,000 per ton, with a projected CAPEX of $52.3 M, OPEX of $76.9 M and revenue of $240 M for a price of $12,000 per ton of lithium carbonate. SRI technology is expected to lower the cost of geothermal production by co-producing lithium carbonate from geothermal fluids. Demand for lithium is fueled by the growing market of lithium batteries for electric vehicles and the current price of lithium carbonate, which is about $12,000 per ton. It is estimated that the Salton Sea Known Geothermal Resource Area is capable of producing more than 600,000 tons per year of lithium carbonate, corresponding to a value of $7.2 billion. To the extent this technology enables new geothermal plants to be built instead of, or to replace, natural-gas-fired power plants, greenhouse gas emissions will be avoided. Furthermore, developing additional geothermal energy sources will bring additional jobs to the Imperial Irrigation District and provide needed revenues to enable environmental restoration projects of the dry lakebed. 25PDF Image | Selective Recovery of Lithium from Geothermal Brines
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Product and Development Focus for Infinity Turbine
ORC Waste Heat Turbine and ORC System Build Plans: All turbine plans are $10,000 each. This allows you to build a system and then consider licensing for production after you have completed and tested a unit.Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our turbines for manufacturing.| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |