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Class Information
Number: 204/529
Name: Chemistry: electrical and wave energy > Processes and products > Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere > Barrier separation (e.g., using membrane, filter paper, etc.) > Ion selective > Using both anion and cation selective membranes > Alternating anion and cation selective membranes > Metal or metal salt recovered or removed
Description: Process in which a metal or metal salt is recovered or removed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8591721 Process for mixed chemical/electrochemical treatment of a liquid medium loaded with nitrates, a device for treating such a liquid medium and applications Nov. 26, 2013
8535502 System and method for recovery of CO.sub.2 by aqueous carbonate flue gas capture and high efficiency bipolar membrane electrodialysis Sep. 17, 2013
8430946 Process for recovery of nickel and cobalt from laterite ores using ion exchange resin Apr. 30, 2013
8329042 Method of treating sludge material using electrokinetics Dec. 11, 2012
8236158 Method for desalinating saltwater using concentration difference energy Aug. 7, 2012
8137522 Method for desalinating saltwater using concentration difference energy Mar. 20, 2012
7901577 Brackish and sea water desalination using a hybrid ion exchange-nanofiltration process Mar. 8, 2011
7807032 Boron separation and recovery Oct. 5, 2010
7722751 Apparatus for regulating salt concentration using electrodialysis, lab-on-a-chip including the same, and method of regulating salt concentration using the apparatus May. 25, 2010
7691246 Advanced electrodeionization for fluid recycling Apr. 6, 2010
7632387 Electrodialysis operation with buffer solution Dec. 15, 2009
7544278 Ion exchange membranes, methods and processes for production thereof and uses in specific applications Jun. 9, 2009
7214301 Filter or filter-element for modified electro-dialysis (MED) purposes May. 8, 2007
7083772 Aqueous solution of zinc nitrite and method for production thereof Aug. 1, 2006
6984300 Method for recovering useful components from electrolytic phosphate chemical treatment bath Jan. 10, 2006
6878258 Apparatus and method for removing contaminants from semiconductor copper electroplating baths Apr. 12, 2005
6824662 Electrodeionization apparatus and method Nov. 30, 2004
6764584 Process for producing lithium concentrate from brine or seawater Jul. 20, 2004
6755951 Electrodialysis of salts for producing acids and bases Jun. 29, 2004
6712946 Electrodialysis of multivalent metal salts Mar. 30, 2004
6569301 Cation exchange membrane selectively permeable to monovalent cations and method for its production May. 27, 2003
6565725 Method for producing deionized water May. 20, 2003
6471844 Process for the isolation of aromatic hydroxycarboxylic acids Oct. 29, 2002
6461491 Method and apparatus for electrodialysis processing Oct. 8, 2002
6391177 High temperature continuous electrodialysis of electroless plating solutions May. 21, 2002
6340420 Methods of treating the oxidation mixture of hydrocarbons to respective dibasic acids Jan. 22, 2002
6221225 Apparatus and process for electrodialysis of salts Apr. 24, 2001
6214190 Method for separating a catalyst by membrane electrodialysis Apr. 10, 2001
6200448 Method of manufacturing nickel hypophosphite by the electro-membrane technique Mar. 13, 2001
6187201 System for producing ultra-pure water Feb. 13, 2001
6045684 Process and apparatus for the production of an aqueous solution of hydrogen peroxide Apr. 4, 2000
6036830 Desalination of aqueous sulphonamide solutions Mar. 14, 2000
6030844 Method and apparatus for pre-analyzing treatment for subsequent analysis of metal components in volatile alkali solution and non-volatile anion in volatine acid solution and method and apparat Feb. 29, 2000
6017433 Desalting aqueous streams via filled cell electrodialysis Jan. 25, 2000
5961803 Leaching process Oct. 5, 1999
5961805 Method and apparatus for producing deionized water Oct. 5, 1999
5948230 Electrodialysis including filled cell electrodialysis (Electrodeionization) Sep. 7, 1999
5858191 Electrodeionization apparatus and method Jan. 12, 1999
5851372 Process for demineralizing a liquid containing organic matter and salts in solution Dec. 22, 1998
5792315 Purifying aqueous effluent from a pulp mill using electro chemical membrane device Aug. 11, 1998
5762774 Apparatus for the purification of liquids and a method of manufacturing and of operating same Jun. 9, 1998
5705046 Process for treating effluent from flue-gas desulfurization system and apparatus therefor Jan. 6, 1998
5702579 Process for making ascorbic acid Dec. 30, 1997
5679229 Electrodialysis including filled cell electrodialysis (electrodeionization) Oct. 21, 1997
5626733 Process for the preparation of keto compounds May. 6, 1997
5597466 Preparation of substantially salt-free aqueous solutions of bisaminoxyalkanes Jan. 28, 1997
5578181 Method for treating waste water containing neutral salts comprising monovalent ions Nov. 26, 1996
5567293 Electromembrane processes for the treatment of kraft mill electrostatic precipitator catch Oct. 22, 1996
5547542 Process for purification and recycle of solutions Aug. 20, 1996
5523201 Method for desalting silver halide emulsion and silver halide emulsion prepared thereby Jun. 4, 1996

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