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WO/1997/013568A2 |
A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair (1). The electrodes (1) are formed of high surface...
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WO/1997/013580A1 |
The invention provides a metathetic process of the type M'X + M"Y = M'Y + M"X, where M' differs from M" and the reagents and the products are water-soluble salts, comprising the steps of (a) transferring a solution of M"Y through at leas...
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WO/1997/002308A1 |
The invention pertains to phosphonium ionomers built up as statistical copolymers from the units (1) -Ar-X- and (2) in which: Ar- stands for a phenylene, biphenylene, naphthylene, anthrylene or other divalent aromatic group and within th...
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WO/1997/000830A1 |
A waste solution containing electroactive species, e.g., metal ions, can be remediated to very low levels of contaminant by an electrolysis method including the steps of introducing an electrolyte containing an electroactive species into...
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WO/1997/000715A1 |
A separation device provided with an inlet (4, 14) for a fluid to be filtered or separated, an outlet (5, 15) for the resulting filtered fluid, and a filter material (3, 11) arranged in the fluid path between the inlet and the outlet. Th...
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WO/1997/000770A1 |
A process for preparing a composite particulate material includes the steps of providing a particulate primary material (16) having a primary softening temperature; providing a particulate support material (18) having a support softening...
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WO/1996/032194A1 |
A composition, in unit dosage form, for the batchwise purification for drinking purposes of a relatively small predetermined volume of contaminated water includes: (a) an organo-chlorine compound serving as a disinfectant-sanitizing agen...
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WO/1996/029133A1 |
An integral, monolithic frame-membrane (10) is disclosed. Frame-membrane (10) has a semi-permeable membrane portion and integral therewith a frame portion (18) having one or more cavities (11a, 11b). Each cavity (11a, 11b) is juxtaposed ...
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WO/1996/028252A1 |
A movable separator includes a resilient container (2, 30) containing particles (3, 38) such as ball bearings. The separator is provided in a column (1, 27, 28) between two beds of particulate material (4, 5, 9, 10, 13, 14, 19, 20) for e...
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WO/1996/022162A1 |
A porous ion exchanger which has a porous structure having ion exchange resin particles bound by a binder polymer, and which has a water permeability of at least 30 kg.cm-1.hr-1 under a pressure of 0.35 kg/cm2.
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WO/1996/017805A1 |
The invention in essence concerns a process for producing demineralised sterile water from drinking water. The process is characterised by the fact that the drinking water is drawn through a strongly acidic monospherical cation exchanger...
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WO/1996/010831A2 |
This invention relates to the use of a unique apparatus and method for extracting radioactive components from liquids, such as elctrophoresis buffers. In the present invention, the radioactive liquid is pumped or transported by other sui...
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WO/1996/007615A1 |
The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant...
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WO/1996/007462A1 |
Apparatus for use in an ion exchange unit or column comprising a riser pipe, a port (16) coupled to one end of said pipe, a first rigid cylinder (64) having apertures therein mounted concentrically on the pipe, a port coupled to the spac...
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WO/1996/006677A1 |
The process comprises the circulation through a column of the liquid to be purified and a superabsorbent, preferably of the polyacrylic type, the rising speed of the liquid being selected so that, in the column, a superabsorbent simply s...
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WO/1996/004207A1 |
An efficient, low pressure drop biocide cartridge (20, 200, 300, 400) is provided for destroying viral and bacterial pathogens in water from untreated water sources along a lengthened flow pathway (148, 392) including a critical plenum (...
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WO/1996/003350A1 |
Technical Field: pure water or ultrapure water of a reduced boron concentration used suitably for the production of a semiconductor device. Means for solving the problems: the apparatus comprises a primary pure water treatment system pro...
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WO/1996/003210A1 |
It is the aim of the invention to provide a process for separating metal ions from a solids-charged solution, in which a pre-treated commercially available ion exchanger can be used. In addition, a pre-treated ion exchanger is to be prop...
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WO/1996/001286A1 |
Bipolar membrane useable for the electrodialysis of aqueous electrolyte, comprising two ion exchange membranes, respectively anionic and cationic, juxtaposed along a common surface, and, along said common surface, a gel based on hydrated...
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WO/1996/000731A1 |
A method of effectively separating and recovering an organogermanium compound from a liquid mixture containing the same and a sugar by treating the mixture through electrification in a compartment wherein the anode side and the cathode s...
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WO/1995/032781A1 |
The invention concerns a continuously operating separation unit in which the separative material is moved under a sample feed point and past collector elements for liquid which penetrates through the separative material. The separative m...
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WO/1995/032791A1 |
Described is an electrochemical cell for the deionization of aqeuous solutions, the cell being equipped with an inlet and outlet for the solution to be deionized, plus supply and discharge pipes for the brine flow. The cell is also equip...
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WO/1995/033084A1 |
The invention concerns an electrochemical process for the production of metal hydroxides and/or metal oxide hydroxides comprising metal ions and hydroxide ions, plus a device for carrying out the process. The metal hydroxide and/or metal...
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WO/1995/032803A2 |
An electrically regeneratable electrochemical cell (30) for capacitive deionization and electrochemical purification and regeneration of electrodes includes two end plates (31, 32), one at each end of the cell (30). Two end electrodes (3...
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WO/1995/032052A1 |
Electrodeionization apparatus having a novel polarity reversal protocol designed to provide continuous, high-quality product fluid is described. The protocol involves substitution of a recirculating fluid stream established in an ion-con...
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WO/1995/032236A1 |
Fuel cells incorporating a novel ion-conducting membrane are disclosed. The membrane (1) comprises a plurality of acid-stable polymer molecules each having at least one ion-conducting component covalently bonded to at least one flexible ...
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WO/1995/031403A1 |
A device for disinfecting and purifying water, of the type comprising at least one ion exchange material. The device comprises at least one strongly basic iodine-containing ion exchange resin layer and at least one layer of a silver-cont...
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WO/1995/030467A1 |
A functionalized macroporous poly(styrene divinylbenzene) particle comprises at least one ionic functional group covalently bonded thereto, the functionalized particle having sorptive capability towards an analyte, said functional group ...
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WO/1995/029005A1 |
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group: a) cation exchange membranes having ion exchange groups predominantly sulfonic acid groups and a minor amount of weakly acidic and/...
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WO/1995/028745A1 |
A modified polymeric cation exchange membrane for use in an electrochemical cell, the said membrane having a salt selected from the group consisting of silver, tungsten, molybdenum and a mixture thereof deposited within the polymer matri...
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WO/1995/026231A1 |
A resin processing system in which a mixture of resins, preferably a mixture of anionic and cationic resins, is separated by a laminar or essentially laminar flowing fluid through a separator module, wherein the anionic particles are rem...
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WO/1995/022388A1 |
There are disclosed methods and apparatuses for the continuous treatment of a liquid to remove one or more contaminants therefrom and to recover the contaminants in a concentrated form achieved through the use of a modified screw tube re...
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WO/1995/021674A1 |
A flow-through capacitor (10) and a controlled charge chromatography column system using the capacitor (10) for the purification of a fluid-containing material, which column comprises an inlet for a fluid to be purified and an outlet for...
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WO/1995/021011A1 |
Magnetic particles which comprise a core of a magnetic material surrounded by a mixture of a fibrous material and a solid binding agent. The particles may be embedded in a polymer resin which incorporates sites, which are selective for p...
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WO/1995/017250A1 |
The present invention provides a system and a process for removing contaminants such as CO2 and mobile cations and anions from aqueous solutions. The system and the process contemplate the use of thermally sterilizable aqueous polishing ...
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WO/1995/014531A1 |
The present invention relates to particles for binding monovalent cations, in particular microcapsules, comprising a) a nucleus containing a cation exchanging material and applied thereon; b) a coating comprising a membrane being permeab...
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WO/1995/013861A1 |
A separation method comprising the steps: (i) contacting an aqueous liquid that contains a dissolved substance that is to be enriched with a polymer under conditions allowing selective partition of said substance to said polymer, whereaf...
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WO/1995/011754A1 |
Removable demineralization cartridge (1) for insertion in the water system of an appliance. Said cartridge comprises a chamber (8) located between a liquid inlet (5) and outlet (6), and containing a powder demineralization resin (7). Acc...
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WO/1995/011741A1 |
The description relates to a device for the continuous or intermittent preparation of salt-containing solutions by a combination of ion exchange and electro-dialysis processes in which there is an electrode (1) acting as an anode fitted ...
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WO/1995/006507A1 |
A filtering device, in particular for drinking water, has a filter insert (17) made up of one or several activated carbon fibres (20).
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WO/1995/005240A1 |
A composite biological-molecule-accretion material (10) is described for extracting desired target biological molecules from aqueous solution (24) and substantially permanently binding to those molecules. The material (10) includes a fir...
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WO/1994/029023A1 |
Aqueous effluents having a metallic ion charge, and especially those containing nickel, are stripped by subjecting said metallic ions to a treatment using complexing polymers, their metallic ion content then being sufficiently low for th...
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WO/1994/029525A1 |
A material, which may have a highly open structure such that it has negligible barrier properties, is treated with expandable particles. These are then caused to expand within the material, reducing its openness and improving its barrier...
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WO/1994/026684A1 |
The present invention is an improved process for the recovery of ethylene glycol from spent glycol generated in the manufacture of polyethylene terephthalate. The spent glycol typically consists of metal oxide catalyst residues, low mole...
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WO/1994/014538A1 |
The invention concerns a method of treating an aqueous solution by ion exchange and an installation for carrying out the method. The method is intended for the desalination and softening of water. The solution to be treated passes throug...
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WO/1994/009904A1 |
Method and device for treatment and disposal of spent powdered or bead ion-exchange resin. Said resin is suspended, fed into the plant where it is de-watered, dried, heat-treated and mixed with a binder and water. The resulting mixture i...
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WO/1994/007602A1 |
A water treatment apparatus has a tank that contains a resin bed through which water flows. The apparatus has a controller that occasionally measures the conductivity of the resin bed at two spaced apart locations to produce first and se...
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WO/1994/007274A1 |
An ion exchange membrane or ion exchange membrane/electrode assembly having increased efficiency in proton exchange processes as the result of membrane hydration processing comprising heating a hermetically sealed membrane or membrane/el...
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WO/1994/006548A1 |
A novel electrodeionization apparatus is disclosed. The apparatus includes a plurality of disk-shaped concentrating and diluting cell pairs which provide an apparatus which minimizes losses of ion exchange membrane efficiency due to memb...
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WO/1994/004271A1 |
Inorganic hydrated metal oxide and metal silicate gels are supported on the surface of particles of porous material by precipitation therein without significant deposit within pores of the support material and without encapsulating the p...
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