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Selective Recovery of Lithium from Geothermal Brines

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Selective Recovery of Lithium from Geothermal Brines ( selective-recovery-lithium-from-geothermal-brines )

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CHAPTER 4: Technology/Knowledge/Market Transfer Activities Process Benefits SRI’s lithium-extraction technology will lower the cost of geothermal production by co- producing lithium carbonate from geothermal fluids. Revenue will be produced from the sale of the metal, and the scaling and re-injection issues associated with high-solid-content brines will be minimized. The efficient separation of metals from geothermal brines promises to make the production of geothermal power economically favorable, even from lower-temperature geothermal fluids. Demand for lithium is fueled by the growing market for lithium batteries used in electric vehicles and the current price of lithium carbonate, which is about $12,000 per ton. The Salton Sea Known Geothermal Resource Area is thought to be capable of producing more than 600,000 tons per year of lithium carbonate (Besseling, E. 2018) corresponding to a value of $7.2 billion. Furthermore, developing additional geothermal energy sources is an important part of the Imperial Irrigation District’s (IID) Salton Sea Restoration and Renewable Energy Initiative, which will provide environmental benefits to the region, including reduced greenhouse gas air emissions which may benefit the health of people in affected zones. In addition, projects sited on exposed lakebeds will produce renewable energy and provide groundcover that will also help mitigate harmful air emissions (http://www.iid.com/energy/salton-sea-initiative). Revenue from the land leases and mineral recovery is expected to support restoration projects, which some sources estimate may cost about $3 to $9 billion (California Energy Commission, Public Interest Energy Research 2014 Annual Report, March 2015, p.B4). This technology enables new geothermal plants to be built and natural gas-fired power plants to be replaced, which will also reduce greenhouse gas emissions. The 2010 weighted average CO2 emission of California geothermal power plants was 180 pounds per MWh, whereas according to the EPA, the average rate of CO2 emissions for natural gas power plants was 1,135 pounds per MWh (Holm, A et al. 2012). In geothermal power plants, CO2 is not a product of combustion but is a minor natural constituent of the geothermal reservoirs. If lithium-recovery-enabled geothermal plants are built and displace electricity generated by natural gas, an average of 955 pounds of CO2 emissions per MWh of power could be avoided or eliminated. According to a 2008 feasibility study sponsored by the IID, developing geothermal resources could result in the creation of some 7,000 to 9,000 jobs, many of which would likely be higher paying than typical jobs in the county (Renewable Energy Feasibility Study Final Report, 2008). Many of these jobs are likely to be in communities to the north, east, and south of the Salton Sea, areas that meet the CalEnviroScreen designation as disadvantaged communities. 22

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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.

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