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Class 204/516 - Barrier separation (e.g., using membrane, filter paper, etc.)


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Process in which a barrier (e.g., membrane, filter paper,
No. of patents: 35
Last issue date: 11/14/2006


NumberTitleIssue Date
7135102Method and system for dewatering particulate materials
A system and method for dewatering particulate materials employs an improved dewatering probe generally including a single non-conducting pipe having a plurality of holes or slots, an anode mounted on the pipe adjacent one end of the pipe, and a cathode mounted on t...
11/14/2006
6922330Implantable medical device having flat electrolytic capacitor fabricated with laser welded anode sheets
Implantable medical devices (IMDs) and components, including flat electrolytic capacitors and methods of making and using same, particularly an improved electrolytic capacitor fabricated of an electrode stack assembly comprising a plurality of capacitor layers stack...
07/26/2005
6899832Installation of flexible lining with flexible collar for lining lateral pipelines
A method for installation of a flexible resin impregnable liner for lining a lateral pipe which leads into a main pipe having at one end a flexible collar for installation at the location where the lateral liner meets the main, wherein after installation the collar ...
05/31/2005
6863833Microfabricated apertures for supporting bilayer lipid membranes
The invention provides microfabricated silicon substrates and devices having extremely small apertures (termed “nanoapertures”) and methods for producing such nanoapertures. The devices have a nanoaperture (which may have a diameter ranging from about a few mill...
03/08/2005
6221237Electrokinetic removal of charged contaminant species from soil and other media using moderately conductive adsorptive materials
Method for collecting and concentrating charged species, specifically, contaminant species in a medium, preferably soil. The method utilizes electrokinesis to drive contaminant species into and through a bed adjacent to a drive electrode. The bed comprise...
04/24/2001
6193867Management of soil conditions and electroosmotic flow in electrokinetic remediation
Methods for controlling electroosmotic flow through a porous medium by applying an electric field between a plurality of electrodes positioned in a porous medium, supplying an acid solution to at least one of the electrodes and/or the soil, and supplying ...
02/27/2001
6086739Electrokinetic remediation prefield test methods
Methods for determining the parameters critical in designing an electrokinetic soil remediation process including electrode well spacing, operating current/voltage, electroosmotic flow rate, electrode well wall design, and amount of buffering or neutraliz...
07/11/2000
5944979Electrokinetic transfer of contaminants from a thin layer of soil to a thin porous medium
To decontaminate soil, a generally thin porous medium is used. A cathode is applied to one face of the porous medium and an anode is spaced apart from the other face of that porous medium to define a generally thin spacing for receiving a generally thin l...
08/31/1999
5919351Method of in-situ cleaning by means of microorganisms of a polluted soil portion
A method is described for the in-situ cleaning by means of microorganisms of a polluted soil portion which contains ground water. In this method, the soil portion to be cleaned is enclosed, and one or several electrodes which are permeable to liquid are p...
07/06/1999
5725752Electrokinetic decontamination of land
A method is provided for the electrokinetic decontamination of land or other material comprising soil in which a direct current is applied between at least one cathode (2) and at least one anode (4) positioned in or on said soil. The anode (4) is a carbon...
03/10/1998
5656144Ion emplasement in soil with chim electrodes
An apparatus and method for soil remediation replaces specific ions in the soil electrochemically, using a DC voltage source and special multicompartment anodes and cathodes, each comprising an inner compartment containing electrolyte and a submerged elec...
08/12/1997
5584980Electric field method and apparatus for decontaminating soil
Disclosed is an electrokinetic soil decontamination method using closely spaced like electrode assemblies, special panel electrode configurations, an electrode emplacement process which leaves the soil in-situ, and a purge fluid conditioning and circulati...
12/17/1996
5435895Electrokinetic electrode system for extraction of soil contaminants from unsaturated soils
There is presented an electrokinetic electrode assembly for use in extraction of soil contaminants from unsaturated soil in situ. The assembly includes a housing for retaining a liquid comprising an electrolyte solution, pure water, and soil water, the ho...
07/25/1995
5427664Free solution electrophoresis-membrane filters trapping assay apparatus and method
A free solution electrophones-membrane filter trapping assay apparatus includes a container and at least one porous membrane. The porous membrane and container define a chamber capable of holding run solution. A specimen containing particles to be classif...
06/27/1995
5344533Apparatus and method for removing liquid from liquid bearing material
An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrode units having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet fro...
09/06/1994
5279718Method of electroosmotically dehydrating sludge
This disclosure relates to a process and apparatus for electroosmotic dehydration of sludge with aluminum salt added to the sludge to reduce the clogging of the filter cloths of the dehydrator, and to improve the cake release. The aluminum salt is prefera...
01/18/1994
5259940Apparatus and method for removing liquid from liquid bearing material
An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrode units having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet fro...
11/09/1993
5173164Multi-modality electrical separator apparatus and method
A preparative scale multi-mode electrical separator, which is matrix-free and may be operated in both a batch mode and a continuous, flow-through mode is provided. It may be scaled according to the solution quantities which are to be processed. An interna...
12/22/1992
5171409Continuous process of separating electrically charged solid, pulverulent particles by electrophoresis and electroosmosis
Process of continuously separating electrically charged, solid pulverulent materials in the form of a suspension in an electrophoresis and electroosmosis cell, characterized in that a fraction of the catholyte is drained off, that a portion thereof is tre...
12/15/1992
5080770Apparatus and method for separating particles
A method and apparatus for separating particles mixed with liquid utilizing a container for holding the same. The system also employs at least one separation membrane, which is permeable to the heterogeneous particles mixed with the liquid, divides the co...
01/14/1992
5019230Apparatus and method for removing liquid from liquid bearing material
An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrodes having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet from the...
05/28/1991
4975166Apparatus and method for removing liquid from liquid bearing material
An apparatus and method for removing liquid from liquid bearing material are provided, the apparatus comprising a pair of electrodes having portions thereof disposed adjacent each other and defining an inlet to the adjacent portions and an outlet from the...
12/04/1990
4786386Process and apparatus for the treatment of water and effluents by ultra-filtration and electrolysis
Disclosed are a process and apparatus for the treatment of such fluids as ter and effluents by ultra-filtration and electrolysis, useful in particular for the continuous recovery and separation of metallic cations from diluted solutions of their salts and...
11/22/1988
4759835Method for discharging cake formed on an electrode structure
A method and apparatus for discharging a cake of suspended solids formed on an electrode structure, the electrode structure comprising an electrode, a membrane wall, an electrolyte chamber formed by the membrane wall, and means for increasing the pressure...
07/26/1988
4639300Method and apparatus for electrofiltration
This invention relates to a system and method for rapidly and efficiently dewatering or separating particles by electrofiltration in which the suspension of solids is first demineralized. The suspension of solids may be demineralized by electrodialysis, dialys...
01/27/1987
4619747Electrofilter process using recirculating electrolyte
An electrofiltering process for dewatering or separating particles from a liquid or a colloidal suspension, which comprises the use of an electrofilter with separated, submerged electrodes, consisting of a cathode assembly and an anode assembly, wherein t...
10/28/1986
4600486Electro-osmotic movement of polar liquid in a porous structural material
Reinforcing or carrier elements for plaster are used as electrodes in electro-osmotic dehumidification installations. The elements comprise a carrier body constituted by a flexible net having a surface of synthetic resin in contact with the plaster and th...
07/15/1986
4395337Treatment of brackish water
Brackish water resulting from steam extraction of heavy crude oils, including oil sands bitumen, is processed for reuse by removing hydrocarbon contamination and removing mineral contamination. The purified water can be boiled in conventional boilers with...
07/26/1983
4376022Method and apparatus for concentrating an aqueous sludge by electro-osmosis
A method for concentrating aqueous sludges. The sludge circulates through an electro-osmosis enclosure (1), of which the porous walls (2, 3) retain the sludge particles but allow the liquid which separates and the gas which forms under the influence of th...
03/08/1983
4207158Electrically augmented vacuum filtration
A process for dewatering a suspension of solids in an electric field controllably maintained between opposing electrode structures, causing the solids to migrate relative to the carrier liquid to form a layer or cake on one set of electrode structures whi...
06/10/1980
4170529System and method for electric dewatering of solids suspension
A system and method for dewatering of a suspension of solids in an electric field controllably maintained between a pair of opposing self-contained electrode structures, to cause the solids to migrate relative to the carrier liquid to form a layer or cake...
10/09/1979
4110189Electro-osmotic/phoretic process for concentrating clay
A process for the electrokinetic separation of finely divided clay particles from an aqueous suspension thereof, the suspension being contained in an electrokinetic cell equipped with an anode and cathode separated by a semi-permeable membrane impermeable...
08/29/1978
4101400Method for dewatering sludge
Sludge is dewatered to a dry content of more than 25% by a combination of (a) pre-conditioning the sludge by flocculation with polymeric flocculants; (b) pre-dewatering the conditioned sludge to a certain solid content corresponding with shovel consistency; (c) the...
07/18/1978
4048038Electroflocculation cell
An electroflocculation cell for the separation of clay particles from an aqueous suspension thereof, the cell being equipped with an anode and cathode separated by a first semipermeable membrane impermeable to clay particles which divides the cell into an...
09/13/1977
4003811Electrokinetic separation of solid particles from aqueous suspensions thereof
A process for the electrokinetic separation of finely divided clay particles from an aqueous suspension thereof, the suspension being contained in an electrokinetic cell equipped with an anode and cathode separated by a semi-permeable membrane impermeable...
01/18/1977
 
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