An inorganic sorbent for lithium extraction from lithium-containing natural and technological brines, which have low concentration of lithium. The sorbent has high selectivity for lithium in ion-exchange lithium-extraction processes and is expressed by the following general formula:

H.sub.xMnO.sub.y.Math.zAl.sub.2O.sub.3.Math.nH.sub.2O;

wherein: x is a number ranging from 0.5 to 2.0, y is a number ranging from 2.0 to 3.0, z is a number ranging from 0.01 to 0.1, and n is a number ranging from 1.0 to 2.0.

An inorganic sorbent for lithium extraction from lithium-containing natural and technological brines, which have low concentration of lithium. The sorbent has high selectivity for lithium in ion-exchange lithium-extraction processes and is expressed by the following general formula:

H.sub.xMnO.sub.y.Math.zAl.sub.2O.sub.3.Math.nH.sub.2O;

wherein: x is a number ranging from 0.5 to 2.0, y is a number ranging from 2.0 to 3.0, z is a number ranging from 0.01 to 0.1, and n is a number ranging from 1.0 to 2.0.

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

A process for recovery of lithium ions from a lithium-bearing brine includes contacting the lithium-bearing brine with a lithium ion sieve (where that LIS includes an oxide of titanium or niobium) in a first stirred reactor to form a lithium ion complex with the lithium ion sieve, and decomplexing the lithium ion from the lithium ion sieve in a second stirred reactor to form the lithium ion sieve and an acidic lithium salt eluate.

A process for recovery of lithium ions from a lithium-bearing brine includes contacting the lithium-bearing brine with a lithium ion sieve (where that LIS includes an oxide of titanium or niobium) in a first stirred reactor to form a lithium ion complex with the lithium ion sieve, and decomplexing the lithium ion from the lithium ion sieve in a second stirred reactor to form the lithium ion sieve and an acidic lithium salt eluate.

This invention relates to a method for preparing a lithium activated alumina intercalate solid by contacting a three-dimensional activated alumina with a lithium salt under conditions sufficient to infuse lithium salts into activated alumina for the selective extraction and recovery of lithium from lithium containing solutions, including brines.

This invention relates to a method for preparing a lithium activated alumina intercalate solid by contacting a three-dimensional activated alumina with a lithium salt under conditions sufficient to infuse lithium salts into activated alumina for the selective extraction and recovery of lithium from lithium containing solutions, including brines.

Proposed is a method of obtaining inorganic sorbents for extracting lithium from lithium-containing natural and technological brines. The method is carried by contacting a soluble niobate (V) with an acid in the presence of at least one zirconium (IV) salt to obtain a precipitate of a mixed hydrated niobium and zirconium oxide. Subsequent steps include granulating the precipitate by freezing, converting the product of granulation into a Li-form, calcining the Li-form, and converting the obtained granulated mixed lithium, niobium, and zirconium oxide into an ion-exchanger in an H-form. In the obtained H-form the inorganic sorbent is ready for use in lithium extraction processes.

Methods and devices for providing dialysis treatment are provided. The device comprises a cartridge for providing regenerative dialysis, the cartridge comprising: a body having an inlet and an outlet and defining an interior, the interior including at least a layer comprising urease, a layer comprising zirconium oxide, a layer comprising zirconium phosphate, and a layer comprising carbon, wherein at least two of the layers are blended together to provide a gradient of the two materials.

The present invention relates to recovery of lithium from liquid resources to produce lithium solutions while limiting impurity precipitation in the lithium solutions.