SEPARATION OF LITHIUM FROM BRINES

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SEPARATION OF LITHIUM FROM BRINES ( separation-lithium-from-brines )

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The slope gives 1/n, n value was found as 2.14, which means high tendency of lithium ions towards manganese oxide particles. The intercept value was equal to log (Kf) which gives Kf as 45.7 L/mg. The Freundlich isotherm actually works for dilute systems, thus fits to the concerning system with R2 value of 0.95. 3.3.5 Stability experiments In order to understand the stability of lithium manganese oxides, a cycle of adsorption and desorption with lithium chloride feed solution and hydrochloric acid leaching solution was repeated. The experiment was started with the adsorption of 5 ppm lithium chloride following by the desorption with 0.5 M HCl and continues with the adsorption of lithium chloride. This cycle was repeated for six times and the loss of capacity in the adsorbents was tabulated in Table 3.29. Table 3.29 The stability of lithium manganese oxide particles in lithium recovery Cycle no 1 2 3 4 5 6 Capacity (mg Li/g ads.) Capacity change with respect to first cycle (%) 21.1 100 20.7 98.1 20.1 95.3 19.8 93.8 19.6 92.9 19.4 92 As it can be deduced from Table 3.29, the capacity of the adsorbents was decreased by around 1 % in each additional cycle. If these values were extrapolated linearly, the half-life of the adsorbents was found at 50th. adsorption-desorption cycle. The mechanism of adsorption in lithium manganese oxides is explained by ion exchange or redox reactions occurring in crystal structure. The exchange of ions in the crystal is happening in tapotactic way which means there is no distortion of the crystal lattice due to interchange of the ions. Treatment of LiMnO with acid causes the removal of nearly all the lithium from the tetrahedral sites while maintaining a spinel-type structure stable. However it is also known that, Mn (IV) atoms are placed in octahedral sites of the adsorbent crystal and transition metal atoms at octahedral 93

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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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