Membrane based technologies for lithium recovery from water lithium

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interfering salts such as high Mg2+/Li+ salt-lake brines. Furthermore, this method uses a large number of chemicals and generates large quantities of sludge. The solvent extraction method can selectively extract lithium in the presence of other metal ions by using a specific chelating agent such as trioctylphosphine oxide and tributyl phosphate [13]. However, this method is only applicable to low Mg2+/Li+ brines. More seriously, the high-volume usage of organic solvents as the extractants not only corrodes the process equipment but also pollutes the environment. Therefore, the development of sustainable technologies for lithium extraction from water resources is crucial. Membrane-based separation technology is considered a promising and environmentally friendly alternative for the recovery of lithium, owing to its advantages of high energy efficiency and easy operation in a continuous process [14–16]. A nanofiltration membrane can extract monovalent ions without any chemicals with the mechanisms of Donnan exclusion, dielectric exclusion, and steric hindrance. Membrane distillation crystallization can simultaneously produce fresh water and recover minerals from high-concentration brine by using low-grade heat. The supported liquid membrane, ion-imprinted membrane, and ion-sieve membrane immobilise highly selective adsorbents towards Li+ such as ionic liquids, ion-imprinted polymers, and ion sieves onto the membrane carriers, respectively. Compared with the conventional solvent extraction methods, these adsorption membrane-based processes can increase adsorption capacity, decrease energy consumption, and facilitate continuous operation (easy regeneration). Further, electricity-driven membrane-based technologies involving selective electrodialysis and the capacitive deionization of permselective exchange membranes use monovalent selective ion-exchange membranes as the separation media to efficiently separate the monovalent cations/anions under the electric field. Thus far, almost no comprehensive reviews concerning membrane-based separation 3

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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)