The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a novel process for preparing a solid crystalline material formed preferably in extrudate form, of formula (LiCl).sub.x.2Al(OH).sub.3,nH.sub.2O with n being between 0.01 and 10, x being between 0.4 and 1, comprising a step a) to precipitate boehmite under specific conditions of temperature and pH, a step to place the precipitate obtained in contact with a specific quantity of LiCl, at least one forming step preferably via extrusion, said process also comprising a final hydrothermal treatment step, all allowing an increase in lithium adsorption capacity and in the adsorption kinetics of the materials obtained compared to prior art materials, when used in a process to extract lithium from saline solutions.

A method for separating, purifying, and recovering components from a liquid feedstock. The method steps include (i) commingling the liquid feedstock with a sorbent whereby one or more components in the liquid feedstock are bound onto the sorbent, thereby producing a loaded sorbent; (ii) packing the loaded sorbent into a first temperature-controlled pressure-resistant column; (iii) sealably engaging the first temperature-controlled pressure-resistant column with a supply of water, and cooling equipment for receiving a flow of an eluate from the temperature-controlled pressure-resistant column; (iv) from the supply of water, producing a first flow of PLP water at a first selected temperature; (v) flowing the first flow of PLP water through the temperature-controlled pressure-resistant column thereby producing a first flow of the eluate therefrom, said eluate containing the one or more components; (vi) cooling the first flow of the eluate; and (vii) collecting the cooled first flow of the eluate.

The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a novel process for preparing a solid crystalline material formed preferably in extrudate form, of formula (LiCl).sub.x.2Al(OH).sub.3,nH.sub.2O with n being between 0.01 and 10, x being between 0.4 and 1, comprising a step a) to precipitate boehmite under specific conditions of temperature and pH, a step to place the precipitate obtained in contact with a specific quantity of LiCl, at least one forming step preferably via extrusion, said process also comprising a final hydrothermal treatment step, all allowing an increase in lithium adsorption capacity and in the adsorption kinetics of the materials obtained compared to prior art materials, when used in a process to extract lithium from saline solutions.

The present invention describes a method to remove metals present in a mixture comprising one or more organic amines comprising the step of contacting the mixture with a silica-polyethyleneimine adsorbent.

The present invention describes a method to remove metals present in a mixture comprising one or more organic amines comprising the step of contacting the mixture with a silica-polyethyleneimine adsorbent.