Commissariat a L'energie Atomique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Luc Schrive

Philip Nouvel

St&eacute;phane Sarrade

Alain Grasmick

Florent Gandi

Christian Perre

Guy Lumia

Anne Julbe

Christian Guizard

Florian Pujol

The invention relates to a device () for the treatment by a pulsed electric field of a product intended to circulate through this device, comprising first and second electrodes () forming parallel plates between which a treatment zone (), is defined, and also comprising a pulse generator () electrically connected to at least said first electrode () so as to be able to apply a pulsed electric field in the treatment zone (), the device also comprising a product inlet conduit () into the treatment zone and a product outlet conduit (). According to the invention, the first electrode () is electrically connected to the pulse generator () through either of the two conduits (), arranged in contact with this first electrode.

Device for the treatment of a product by a pulsed electric field

This invention discloses the treatment of effluents in which a flow of the said effluents is subjected to a pulsed electric field that modifies physicochemical and biologic characteristics of the medium, this modification being used during a solid/liquid separation operation, of the settlement or membrane filtration type. The solid/liquid separation operation () and the application of a pulsed electric field () are operations carried out at different locations along the effluent flow. The pulsed electric field has voltage value, current value, pulse repetition frequency and voltage front shape characteristics chosen such that the required effluent treatment can be achieved as a function of the locations at which these membrane filtration operations are carried out and a pulsed electric field is applied.

Method for treatment of effluents using pulsed electric fields and solid/liquid separation

The treatment of effluents in which a flow of the effluents is subjected to a pulsed electric field that modifies physicochemical and biologic characteristics of the medium, this modification being used during a solid/liquid separation operation, of the settlement or membrane filtration type. The solid/liquid separation operation and the application of a pulsed electric field are operations carried out at different locations along the effluent flow. The pulsed electric field has voltage value, current value, pulse repetition frequency, and voltage front shape characteristics chosen such that the required effluent treatment can be achieved as a function of the locations at which these membrane filtration operations are carried out and a pulsed electric field is applied.

Effluent treatment combining solid/liquid separation and pulsed electric fields

This invention relates to a method of manufacturing a product based on a simple or mixed metal oxide, or silicon oxide, from a charge of one or more precursors comprising one or more organic precursors. These oxides can be, for example, oxides of Ti, Al, Mg, Th, Si, Ba, Bc or Zr etc. The method comprises bringing the charge of organo-metallic precursors into contact with a reaction medium that comprises supercritical C0 , at a temperature of from 31 to 100&deg; C. and a supercritical pressure of from 3&times;10 to 5&times;10 Pa, in order to form from the precursor, a product based on a simple or mixed metal oxide, or silicon oxide, from the reaction medium by reducing the pressure of the supercritical C0 to a pressure lower than the supercritical pressure.

Method for making single or mixed metal oxides or silicon oxide

The invention relates to a method of tangential filtration of a viscous fluid or liquid in which a supercritical substance is dissolved in a supercritical state in this viscous fluid or liquid so as to lower the viscosity. The invention also relates to the installation for the implementation of the method. The invention is applicable particularly to the filtration of heat sensitive organic liquids and used motor oils.

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Pont Saint Esprit, France

Luc Schrive