Centre National De La Recherche Scientifique

Universitè De Montpellier

Universite Dé Lorraine

Ecole Nationale Superieure De Chimie De Montpellier

Metaleurop S.a.

Terra Nova

Université De Chambéry

Christian Thomas

Stéphane Pellet-Rostaing

Guilhem Arrachart

Paolo Fossi

David Virieux

Raphael Turgis

Micheline Draye

Gervais Vanhelle

Pierre Mazerolles

Sophie Legeai

Elisabeth Perrier

Joël Menuet

Raphaël Turgis

A method for extracting the tantalum from an acid aqueous phase A1 comprising at least one step comprising the bringing of the aqueous phase A1 into contact with a phase A2 not miscible with water, and then the separation of the aqueous phase A1 from the phase A2, the phase A2 consisting of one ionic liquid or a mixture of ionic liquids as an extractant. A method for recovering the tantalum that implements this extraction method and to a use of an ionic liquid or of a mixture of ionic liquids as an extractant, in order to extract the tantalum from such an aqueous phase A1.

Process for extracting and recovering tantalum present in an acid aqueous phase by means of an ionic liquid, and use of such an ionic liquid for extracting the tantalum from an acid aqueous phase

The invention relates to a method for treating materials containing a mixture of plastic materials and metal materials, said method including: &#x2014;crushing the material to be treated; pyrolysis of the crushed material; a first magnetic separation performed on the pyrolysed material providing, on the one hand, a ferrous metal fraction and, on the other hand, non-ferrous residue; &#x2014;a second magnetic separation performed on the non-ferrous residue providing, on the one hand, a non-ferrous metal fraction and, on the other hand, non-magnetic residue. The invention also relates to a facility for implementing said method.

Method for recovering metals from electronic waste containing plastics materials

The present invention is a germanium compound having the following general formula I: ##STR1## in which n is a positive integer less than 50 when the general formula is linear and is between 3 and 50 when the general formula is cyclic, and preferably between 3 and 6, and the R radicals, which are identical or different, are chosen independently from hydrocarbyl radicals, or, the R radicals form a hydrocarbon chain optionally containing one or two heteroatoms, optionally substituted by one or more C.sub.1 -C.sub.3 alkyl radicals, which are optionally unsaturated, the compound of general formula I being, when it is linear, terminated by two radicals R.sub.3 Ge-- and R.sub.3 Ge--O-- respectively, provided that the different R radicals cannot simultaneously correspond to a methyl radical and when the general formula I is cyclic, the two radicals attach to the same germanium atom, cannot correspond to a divalent chain of the formula: ##STR2## Z.sub.1 and Z.sub.2 being chosen from methyl radicals or hydrogen atoms.

Germanium compounds and their use as a biocompatible oil

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Paris, France

Christian Thomas