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The regeneration of the sorbent was carried out using water and a positive pressure of CO2. The TDS of the exit stream indicates completion of the regeneration step as the amount of lithium desorbed from the sorbent progressively decreases. Eluate samples were collected during adsorption and the wash and regeneration steps to monitor the actual lithium concentration, and those of other metals present in the exit stream. A DionexTM AquionTM ion chromatography system from Thermo Fisher (Figure 6) was used for the analysis of lithium and other metal cations with a concentration down to a few mg/L. Figure 6: DionexTM AquionTM Ion Chromatography System Source: SRI International The instrument was periodically calibrated to maintain its accuracy and sensitivity. Based on the metal ion analysis and the amount of fluid collected at each step, the team determined the amount of lithium captured and regenerated, along with any other metal ion species present in solution. The sorbent was first cycled 25 times through a sequence of adsorption/wash/regeneration steps using the synthetic brine (Table 4). Then the pre-treated geothermal brine (Table 5) was cycled through the sorbent bed for an additional 24 cycles. The spent brine, wash water, and regenerated solution were collected over three cycles before analyzing the average ionic composition. The adsorption and regeneration times for each test cycle were adjusted to a fixed value. Figure 7 shows the lithium working capacity after sorbent regeneration as an average over three consecutive cycles. Following the 24-cycle adsorption/desorption test using the pre- treated geothermal brine, the sorbent performance was stable and showed only minor capacity variation (less than +/- 10 percent), thus supporting its promising durability under repeated cycling. 20PDF 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 (Standard Web Page)