Prior To Ion Exchange Or Sorption Patents (Class 210/669)
  • Patent number: 6706193
    Abstract: Fluorinated emulsifiers can be recovered from an aqueous phase containing small amounts of fluoropolymer particles by treating the aqueous phase with a small amount of a nonionic surface-active agent, bringing the aqueous phase adjusted in this way into contact with an anionic exchanger resin, and liberating the adsorbed emulsifier from the exchanger resin. The finely divided fluoropolymer can be precipitated quantitatively in the untreated aqueous phase or the eluate using flocculating agents.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: March 16, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Georg Burkard, Klaus Hintzer, Gernot Löhr
  • Patent number: 6689400
    Abstract: The present invention concerns methods of obtaining stable lutein and its derivatives. Additionally, the invention concerns various compositions comprising lutein, lutein esters, tetrahydrocurcuminoids, and carnosic acid.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: February 10, 2004
    Assignee: Sabinsa Corporation
    Inventor: Muhammed Majeed
  • Patent number: 6685839
    Abstract: In the field of biomass extraction, there is a need for effective removal of solvent from spent biomass material. An apparatus for removing solvent residues includes a vessel (11) for containing biomass; a steam source (19) for supplying steam to contact the biomass; and a separator (24) for separating solvent from steam that has contacted the biomass. The disclosure includes a method of use of the apparatus.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: February 3, 2004
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Stuart Corr, Paul A. Dowdle, Robert E. Low, James David Morrison, Frederick Thomas Murphy
  • Patent number: 6641734
    Abstract: A process is disclosed for purifying an aqueous feed stream comprising a product organic acid, such as lactic acid, and a strong contaminant, such as pyruvic acid or oxalic acid. The molar concentration of the product organic acid in the feed stream typically is at least 20 times greater than the molar concentration of the strong contaminant. The aqueous feed stream is contacted with a first immiscible basic extractant that has at least a 3-fold greater affinity for the strong contaminant than for the product organic acid. The majority of the strong contaminant and some product organic acid become complexed with the first immiscible basic extractant. The complexed first immiscible basic extractant is separated from the aqueous stream, thereby producing a first effluent stream that comprises product organic acid and that has a greater ratio of molar product organic acid to molar strong contaminant than the aqueous feed stream did.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: November 4, 2003
    Assignee: A. E. Staley Manufacturing Co.
    Inventors: Michael Charles Milner Cockrem, Istvan Kovacs, Idris Mohamednur, David Heidel
  • Patent number: 6638429
    Abstract: Method and apparatus for processing a watery substance, such as sludge or manure, wherein in a mixer-drier (33) the watery substance to be processed, which may or may not be mechanically partly dewatered (in 31) and/or preheated (in 32), is mixed with zeolites of type A, which adsorb water from the watery substance while releasing adsorption heat which causes an amount of moisture to evaporate, while from the mixer-drier vapor and a mixture of zeolites and dried matter are discharged, whereafter the zeolites are regenerated in an oven (35) through heating, and are returned to the mixer-drier after being separated from dry matter residue formed by the heating, such as ash, and released moisture. Prior to the supply to the oven, at least a part of the dried matter can be extracted by a separation device (34) the mixture formed in the mixer-drier.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: October 28, 2003
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO
    Inventors: Paulus Josephus Theodorus Bussmann, Jacob Boot
  • Publication number: 20030196954
    Abstract: The present invention provides a method for manufacturing the activated carbon from the coffee waste. The method includes steps of immersing the coffee waste in an activator solution so that the activator adsorbs on a surface of the coffee waste, and transferring the immersed coffee waste into a high temperature-rotary reactor for proceeding a reaction of carbonization and activation to result in the activated carbon product having a high specific surface area. Therefore, the present invention can efficiently transform the coffee waste into the activated carbon product used in industries of environment engineering and foodstuff, so as to achieve the object of recycling the waste.
    Type: Application
    Filed: April 17, 2003
    Publication date: October 23, 2003
    Applicant: King Car Food Industrial Co., Ltd.
    Inventors: Nae-Wen Kuo, Pei-Chuan Wu
  • Publication number: 20030196959
    Abstract: A process for removing soluble and insoluble inorganic, organic, and microbiological contaminants from a fluid stream employing a pretreatment module, a post-treatment module, a recharge stream module or any combination thereof, and an ion exchange module, is provided. The process provided reduces the problems associated with ion exchange material fouling and increases contaminant removal capacity.
    Type: Application
    Filed: April 17, 2002
    Publication date: October 23, 2003
    Inventor: Kenneth D. Hughes
  • Publication number: 20030150810
    Abstract: An object of the present invention is to provide a water purification system capable of treating for-treatment water containing a nitrogen compound such as polluted ground water efficiently and achieving a reduction in size of the system. The water purification system comprises an electrodialyser for concentrating a nitrogen compound in polluted ground water as for-treatment water containing a nitrogen compound, a nitrogen treatment device for treating the nitrogen compound in the for-treatment water treated in the electrodialyser by electrolysis as an electrochemical process, the for-treatment water containing at least chloride ions, and a pump for returning the for-treatment water treated in the nitrogen treatment device to the electrodialyser.
    Type: Application
    Filed: January 6, 2003
    Publication date: August 14, 2003
    Inventors: Naoki Hiro, Motoki Kouchi, Tomohito Koizumi, Tsuyoshi Rakuma
  • Publication number: 20030146156
    Abstract: A process is provided for selectively removing protein aggregates from a protein solution in a normal flow (NFF) filtration process. Preferably, it relates to a process for selectively removing protein aggregates from a protein solution in a normal flow (NFF) filtration process and virus particles from a protein solution in a two-step filtration process. In a first step, a protein solution is filtered through one or more layers of adsorptive depth filters, charged or surface modified microporous membranes or a small bed of chromatography media in a normal flow filtration mode of operation, to produce a protein aggregate free stream. The aggregate free protein stream can then be filtered through one or more ultrafiltration membranes to retain virus particles at a retention level of at least 3 LRV and to allow passage therethrough of an aggregate free and virus free protein solution.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 7, 2003
    Inventors: Martin Siwak, Hong An, Jason R. Cormier, Dana Kinzlmaier
  • Publication number: 20030141247
    Abstract: The invention provides processes for treating commercial grade preservatives to remove the off-flavor and/or off-odor from the preservatives. The processes involve preparing a solution by dissolving the preservative in a suitable solvent, such as water or methanol or mixtures thereof. The preservative solution is then passed through a filter to separate and remove organic acid impurities from the preservative. The undesirable tastes and odors, principally caused by the organic acid impurities, are retained in the filter while the preservative passes through the filter. In one embodiment, the filter is a bed of anion exchange resin that reacts with and removes the organic acid impurities. In another embodiment, the filter contains a metal cation that converts the organic acid impurities into insoluble salts which remain in the filter. The solvent can be removed by evaporation after the preservative solution is passed through the filter.
    Type: Application
    Filed: January 31, 2003
    Publication date: July 31, 2003
    Inventors: Dale F. Kuhn, Bruce E. Plashko
  • Patent number: 6599428
    Abstract: An improved filter device for the removal of contaminants from water and method of using same. The present invention comprises an outer housing having an inlet at one end for water to be purified and an outlet for purified water at an opposing end thereof. An inner filter is situated within and in fluid communication with the outer housing to remove contaminants from the water. Within the inner filter is an inner filter housing. Within the inner filter housing is at least one uniform region of dispersed granular copper media. A filter pad is positioned within the inner filter housing. Further, a region of granular activated carbon is positioned opposite the uniform region by the filter pad.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: July 29, 2003
    Assignee: Paragon Water Systems, Inc.
    Inventor: John H. Douglas
  • Publication number: 20030132163
    Abstract: An electrolytic method is provided for purifying an aqueous stream, including at least one contaminant ion. In one embodiment, the eluent stream flows through a purifying flow channel, including ion exchange bed, an electric field is applied through the flowing eluent stream in the purifying flow channel, and the contaminant ion is removed from the eluent stream. In another embodiment, no electric field is applied and the ion exchange bed is periodically regenerated. Two beds may be used with one bed on line while the other bed is regenerated followed by a reversal of flow.
    Type: Application
    Filed: December 2, 2002
    Publication date: July 17, 2003
    Applicant: DIONEX CORPORATION
    Inventors: Kannan Srinivasan, Nebojsa Avdalovic
  • Patent number: 6582608
    Abstract: Discrete non-clumping mechanically stable geometric alloyed material shapes having about 55-95% by weight thermoplastic elastomer and about 5-45% thermoplastic polymer and about 0-12% by weight filler are used for removing organic contaminates from contaminated fluids. The shapes are typically spheres having a maximum dimension of 0.125 inches, or circular discs having a thickness of less than 6 millimeters. The shapes are put in a loose form or packing, and a fluid containing organic contaminants (such as water, air, or a soil slurry) is brought into contact with the shapes so that the shapes absorb organic contaminants from the fluid, typically absorbing more than 90% of the contaminants in the first pass through. The contaminated fluid is typically passed through an ozone generator before being brought into contact with the shapes. The shapes may be foamed, e.g. utilizing about 0.1-10% by weight foaming agent.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: June 24, 2003
    Assignee: Hitech Polymers Inc.
    Inventor: Gerald W. Miller
  • Patent number: 6581375
    Abstract: A method for the recovery and purification of water from the exhaust gases of an internal combustion engine is disclosed. An apparatus for carrying out that method is also disclosed. In this method, the water is condensed out from the vehicle's exhaust (for example, by using a countercurrent flow heat exchanger in combination with a chiller), and the condensed water is then purified. The purification typically includes passing the water through one or more particulate filters; passing the water through one or more activated carbon filter beds, and passing the water through one or more ion exchange resin filter beds.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: June 24, 2003
    Assignee: Lexington Carbon Company LLC
    Inventors: Marit Jagtoyen, Geoffrey M. Kimber
  • Patent number: 6579460
    Abstract: A process and a composite for removing toxic cations and anions from blood or dialysate is disclosed. The process involves contacting blood or dialysate with a shaped ion exchange composite to remove ammonium and phosphate ions. The composite is a mixture of an anion exchange composition such as zirconia and a microporous cation exchange composition formed into a shaped article and optionally containing a binder such as hydrous zirconium oxide. The microporous cation exchangers are represented by the following empirical formula.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: June 17, 2003
    Assignee: UOP LLC
    Inventors: Richard R. Willis, David S. Bem, Daniel L. Ellig
  • Patent number: 6579461
    Abstract: The invention relates to a process for the reprocessing respectively purification of aqueous solutions of a tertiary amine oxide, particularly of process waters, e.g. used precipitation baths, which occur during the production of cellulosic moulded bodies, comprising the separation of turbidifying agents and solid impurities from the solution. The process in accordance with the invention is characterised in that the turbidifying agents and impurities are at least partly separated by means of a flotation process.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: June 17, 2003
    Assignee: Lenzing Aktiengesellschaft
    Inventors: Johann Männer, Rudolf Emeder, Christian Hager, Franz Nussbaumer, Thomas Endl, Johannes Kneissl
  • Patent number: 6565753
    Abstract: In the purification of deicing fluid for recovery of glycol, initially solid particles are separated, then dissolved organic compounds and positive and negative ions are separated by an ion exchange in an ion exchanger, and finally water is separated by distillation.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: May 20, 2003
    Assignee: De-Icing, Inc.
    Inventors: Allan Holmgren, Peter Mattsson
  • Publication number: 20030066800
    Abstract: Disclosed is a method of small particle precipitation, retention and dispersion of a solid or semi-solid material onto or into a carrier material. In this method, solute particles are precipitated from a pressurized gaseous fluid solution or a liquid solution and effectively retained and dispersed within a carrier material. This technique can be advantageously used in pharmaceutical processing to produce a blend of solid or semi-solid material particles and carrier material, a granulation of the solid or semi-solid material particles with carrier material, carrier material partially or fully coated with the solid or semi-solid material particles, or mixtures thereof.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 10, 2003
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Said Saim, Stephen Horhota, Kenneth James Koenig, David Joseph Bochniak
  • Patent number: 6531065
    Abstract: Disclosed herein are chemical methods for reducing concentrations of perchlorate ion in sources of water to be used for potable purposes. The disclosed methods include contacting water containing perchlorate ion with iron metal to chemically reduce the perchlorate ion to a more innocuous ion species. The metal can then be removed. The instant methods also relate to contacting perchlorate contaminated water with iron metal or a metal oxide in the presence of phosphoric acid to form a complex with perchlorate ion and adsorb the complex onto the iron, which is then removed from the water. These methods provide an environmentally safe and economically efficient means to effectively remove perchlorate ion from potable water sources, resulting in water that is safe for human use and consumption.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: March 11, 2003
    Assignee: San Diego State University Foundation
    Inventors: Mirat D. Gurol, Kyehee Kim
  • Patent number: 6531064
    Abstract: A system for remediating groundwater contaminated with radionuclides, consisting of an underground bed of crushed zeolites. Distribution pipes convey contaminated groundwater to the zeolite bed by means of a pump, which draws the contaminated water through wells from an underground plume of released waste mixed with groundwater. The radionuclides in the water undergo capture with the zeolite minerals and lock into the zeolite crystal lattice. After the contaminated water passes through the zeolite bed, it is collected by a series of collection pipes and conveyed to a sampling station, where it can be determined whether the water has been decontaminated sufficiently to discharge it by piping to a river outfall or back to the ground. When functioning, the system contains the released contaminants on the waste site and prevents further spread and migration of the contaminated water by means of the cone of depression created by the pumping well.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: March 11, 2003
    Inventor: Jane Anne Rose
  • Publication number: 20030042201
    Abstract: A point-of-use apparatus and methods for producing medical grade drinking water. Preferred embodiments encompass the use of one or more beneficial reagent delivery devices with which the medical grade drinking water can be fortified with various vitamins, minerals, and various pharmaceutical products.
    Type: Application
    Filed: June 19, 2002
    Publication date: March 6, 2003
    Inventors: Mark L. Sizelove, Michael A. Taylor
  • Patent number: 6528622
    Abstract: A preparative method of isolating a preselected whey protein or group of whey proteins from a solution is provided. The method comprises the following steps: (a) contacting a whey protein solution with the preselected ion exchanger for a time and at a temperature sufficient to enable the preselected whey protein to be adsorbed; wherein the whey protein solution has (1) a protein content in the range of about 5% to about 20% by weight, (2) a pH of a preselected level, which is the level at which the preselected whey protein or group of whey proteins selectively binds to the preselected ion exchanger, and (3) a reduced ionic strength; and (b) recovering either or both of the following: (1) the whey protein component adsorbed in step (a), and (2) the breakthrough whey protein component not adsorbed in step (a).
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: March 4, 2003
    Assignees: Massey University, New Zealand Dairy Board
    Inventors: John Stephen Ayers, David Francis Elgar, Mark Pritchard
  • Patent number: 6521131
    Abstract: The disclosed invention relates to a method of disposing of mercury-containing wastewater containing mercury-complexing materials, comprising the steps of treating wastewater containing mercury ions with a strong oxidizing agent in a reaction chamber to produce pretreated wastewater by removing an effluent stream of pretreated wastewater from the reaction chamber; and passing the effluent stream of pretreated wastewater through a column packed with a mercury-selective adsorbent material to produce an effluent stream of wastewater having a reduced mercury content. The adsorbent material is a porous resin having immobilized mercury-selective chelating groups bound thereto. A particularly preferred adsorbent material is a crosslinked styrene-divinylbenzene copolymer having immobilized dithiocarbamate groups bound thereto.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: February 18, 2003
    Assignee: SolmeteX, Inc.
    Inventors: Richard A. Hamilton, Scott P. Fulton, Ted M. Shields
  • Publication number: 20030024863
    Abstract: The apparatus and methods of the present invention enable efficient and appropriate treatment of Urban Water Runoff, so that the treated Urban water Runoff can be can be introduced into public waterways without contaminating such waterways. The system apparatus utilizes adsorptive Organoclay media, mechanical filtration and ultraviolet sterilization. The methods and apparatus of the present invention remove contaminants from Urban Water Runoff to a level which enable the resulting effluent to meet appropriate standards for introducing the treated Urban water Runoff in to public waterways. The method and apparatus of water treatment of the present invention does not utilize chlorine containing compounds which, when combined with organic compounds can produce THM's that can become problematic when re-introduced to the downstream environment. The systems of the present invention can be made sufficiently compact so as to enable their use in remote locations.
    Type: Application
    Filed: March 29, 2002
    Publication date: February 6, 2003
    Inventors: Guy Timothy Gannon, Joseph Charles Gannon
  • Publication number: 20030015472
    Abstract: The liquid effluent from solvent extraction contains radioactive thorium Th-231 and Th-234. This invention uses an ion exchange process to remove and concentrate the thorium. The process is designed so that the thorium remains on the ion exchange column until it decays to uranium and protactinium. These decay products are subsequently replaced by additional thorium. Therefore, the thorium never reaches break-through and the column can be used continuously without regeneration.
    Type: Application
    Filed: September 19, 2002
    Publication date: January 23, 2003
    Inventor: Sydney Koegler
  • Publication number: 20030010720
    Abstract: A method of removing metal or metalloids, arsenic in particular, from groundwater or another source of contaminated water. The method comprises providing a water source, contacting the water source with CO2, whereby the pH of the water source is lowered to produce pretreated water, contacting the pretreated water with a metal or metalloid complex-adsorbing substance whereby contaminants are separated from the remainder of the pretreated water to produce metal or metalloid-depleted water, and stripping the CO2 from the metal or metalloid-depleted water, whereby the pH of metal or metalloid-depleted water is increased. A system for metal removal utilizing the CO2 process is also provided.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 16, 2003
    Applicant: CH2M Hill, Inc.
    Inventor: Joseph Daniel Chwirka
  • Patent number: 6491824
    Abstract: A method for resolving sludge/emulsion formed as a result of adding introduced fluids to oil and gas wells. The method comprises adding a water-dispersible emulsion breaker and/or adjunct additives that may include iron-control chemicals, scale-control chemicals, or paraffin-control chemicals or combinations thereof in amounts sufficient to separate the sludge/emulsion into an oil phase and a water phase and to control iron, scale, or paraffin in the oil phase. Further treatment of water phase includes treatment with water clarifiers, allowing the water phase to remain in settling vessels, and passing the water phase through a macroreticular resin resulting in water that is environmentally acceptable for disposal.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: December 10, 2002
    Assignee: BJ Services Company
    Inventors: Huei-Nan (Leo) Lin, Rodney Davis Martin, James M. Brown, Gene F. Brock, Randall J. Perkins
  • Publication number: 20020175123
    Abstract: A process and an apparatus are described for separating at least 50% by weight of oleaginous preparation media from elastane fibers which contain preparations, with respect to 100% by weight of the initial content of preparation media in the elastane starting material, wherein a mixture of elastane fibers of different titres is used as chopped fiber, wherein fibers with a titre of 11 to 10,000 dtex or more are used as a starting material, which chopped elastane fibers are mixed with water in a mixing vessel in a bath ratio of water to chopped elastane fibers of at least 5/1, wherein mixing is effected using mixing devices (3) with a speed of rotation of at least 1500 rpm, treatment is carried out at room temperature or at an elevated temperature, particularly up to 90° C., a treatment duration of 10 to 60 minutes is maintained, and the aqueous bat which contains preparation media is subsequently separated from the fiber material.
    Type: Application
    Filed: January 23, 2002
    Publication date: November 28, 2002
    Inventors: Wolfgang Anderheggen, Toni Herbertz, Ulrich Reinehr, Tilo Sehm
  • Publication number: 20020166823
    Abstract: A process for treatment of water via membrane separation equipment. A feedwater is maintained or adjusted to a pH of 4.3 or lower, and fed to a membrane separation system. In this manner, species such as TOC become more ionized, and (a) their rejection by the membrane separation process is significantly increased, and (b) their solubility in the reject stream from the membrane process is significantly increased. Passage TOC through the membrane is significantly reduced. A recovery ratio of eighty percent (80%) or higher is achievable with most feedwaters, while simultaneously achieving a substantial reduction in cleaning frequency of the membrane separation equipment. The method is particularly useful for the preparation of high purity water.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 14, 2002
    Inventor: Debasish Mukhopadhyay
  • Patent number: 6478970
    Abstract: The liquid effluent from solvent extraction contains radioactive thorium Th-231 and Th-234. This invention uses an ion exchange process to remove and concentrate the thorium. The process is designed so that the thorium remains on the ion exchange column until it decays to uranium and protactinium. These decay products are subsequently replaced by additional thorium. Therefore, the thorium never reaches break-through and the column can be used continuously without regeneration.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: November 12, 2002
    Assignee: Framatome ANP Inc.
    Inventor: Sydney Koegler
  • Patent number: 6475390
    Abstract: A separation process is described for separation of a nutrient from divalent ions of an aqueous solution. The aqueous solution is contacted with an ion exchange resin that includes monovalent ions until the concentration of divalent ions in the aqueous solution has been depleted and an eluate is collected. The eluate is then subjected to a process, preferably a nanofiltration membrane process, capable of separating monovalent ions to obtain a permeate fraction including monovalent ions and a retentate fraction including the nutrient. The retentate fraction is then separated into fractions with at least one fraction including a major portion of the nutrient. The ion exchange resin is then regenerated by contacting it with a solution including the permeate fraction until a major portion of the divalent ions have been replaced by monovalent ions.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: November 5, 2002
    Assignees: University of Western Sydney, Commonwealth Scientific and Industrial Research Organization, Dairy Research and Development Corporation
    Inventors: Rosalie Joyce Durham, James Arthur Hourigan, Robert Walter Sleigh, Robert Leonard Johnson
  • Patent number: 6471867
    Abstract: An electro-regenerating type apparatus for producing deionized water, which comprises an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between an anode compartment provided with an anode and a cathode compartment provided with a cathode, demineralizing compartments compartmentalized with the anion exchange membranes on the anode side and compartmentalized with the cation exchange membranes on the cathode side, and concentrating compartments compartmentalized with the cation exchange membranes on the anode side and compartmentalized with the anion exchange membranes on the cathode side, the electrodialyzer having ion exchangers accommodated in the demineralizing compartments, wherein a porous anion exchanger layer having a porosity of from 20 to 95%, a maximum pore size of from 0.01 to 500 &mgr;m and a thickness of at least five times the maximum pore size and from 10 &mgr;m to 10 mm, is provided on the anode side of each anion exchange membrane.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: October 29, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshio Sugaya, Yukio Matsumura, Hiroshi Toda
  • Publication number: 20020144948
    Abstract: A process for depleting monovalent cations from water comprising subjecting the water to reverse osmosis, so that the retentate from this reverse osmosis has a higher ionic concentration, and subjecting said retentate to electrodialysis, so as to recover a water depleted in monovalent cations. The water may, for example, be intended for nutritional purposes. The may also, for example, contain monovalent and divalent cations, In one embodiment, the permeate from the reverse osmosis is added to the water depleted in monovalent cations, so as to obtain a water with a controlled mineral content.
    Type: Application
    Filed: December 19, 2001
    Publication date: October 10, 2002
    Inventors: Pierre Aimar, Patrice Bacchin, Catherine Bramaud, Henri Jauffret, Christine Raphanel
  • Patent number: 6451210
    Abstract: In a method for treating a contaminated fluid stream, a characteristic of a flow of the composition to a carbon adsorption zone is sensed. The sensing is remotely monitored to determine a treatment for the contaminated fluid stream. The contaminated fluid stream is then treated according to the monitoring. A system for treating a contaminated fluid stream comprises a sensor that senses a characteristic of a flow of a contaminated fluid stream prior to treatment and a monitor to receive information concerning the characteristic from the sensor and to consequently control the carbon adsorption zone to treat the contaminated fluid stream. The monitor is situated at a location remote from the carbon adsorption zone.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: September 17, 2002
    Assignee: General Electric Company
    Inventors: Timothy Mark Sivavec, Patricia Denise Mackenzie, Joseph James Salvo, Sunita Singh Baghel
  • Publication number: 20020113015
    Abstract: The object of the present invention relates to a simple, rapid and inexpensive process for effecting solid-liquid separations in the case of zeolites, also having small crystals. This process, which is particularly useful for the recovery of zeolite crystals in suspension in the crystallization water, comprises treating this suspension of crystals with an acid or one of its precursors and subjecting the resulting mixture to filtration or decanting. According to a particular aspect of the invention, the crystalline phase is separated in a mixture with oxides which can be used as ligands. Said oxides can be generated by the reagents of the zeolite preparation reagent mixture, not transformed into crystalline phase during the synthesis hydrothermal treatment, or they can be added to the suspension of crystals before the separation treatment, or again they can be generated by precursors suitably added to the crystallization slurry.
    Type: Application
    Filed: December 14, 2001
    Publication date: August 22, 2002
    Applicant: ENI S.p.A.
    Inventors: Angela Carati, Giannino Pazzuconi, Carlo Perego, Oscar Cappellazzo, Gianni Girotti
  • Patent number: 6432312
    Abstract: The present invention provides improvements for indoor closed systems used to raise aquatic life, along with methods to overcome the current problems associated with such indoor closed systems. The present invention provides an aquatic life rearing system which reuses water in the rearing process and does not pollute lakes or streams due to waste water discharge. The improvements include a method of preventing performance degradation of equipment which removes ammonia from the rearing water.
    Type: Grant
    Filed: March 13, 1999
    Date of Patent: August 13, 2002
    Inventor: Joseph T. Fuss
  • Patent number: 6426008
    Abstract: This invention relates to a method for removing impurities from a brine solution, the brine solution comprising a water soluble chelating agent, the method comprising the steps of: a) adjusting the pH of the brine solution to a pH of from about 2 to about 4; b) passing the brine solution through a first functionalized resin; the first functionalized resin having functional groups capable of removing multivalent metal cations from the brine solution; c) adjusting the pH of the brine solution to a pH of from about 9 to about 11.5; and d) passing the brine solution through a second functionalized resin; the second functionalized resin having functional groups capable of removing alkaline earth metal cations from the brine solution.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: July 30, 2002
    Assignee: General Electric Company
    Inventors: James Manio Silva, Donald Franklin Foust, Thomas Joseph Fyvie
  • Patent number: 6419831
    Abstract: Ozone is generated and combined with water. The combined water and ozone are then mixed to provide a substantially homogeneous mixture which subsequently is transported along a confined flow path having a length sufficient to provide substantially complete decomposition of the ozone.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: July 16, 2002
    Assignee: Ozonaid International, Inc.
    Inventor: Desheng Wang
  • Patent number: 6413432
    Abstract: This invention relates to a method for treating various kinds of drain water and waste liquid which treatment now becomes a problem, for example, drain water and waste liquid containing hardly removable phosphorus and nitrogen, waste liquid containing organochlorine compounds such as tetrachloroethylene, etc., excretive drain water from a piggery containing organonitrogen compounds at a high level, waste liquid containing heavy metals such as lead, hexavalent chromium, cadmium and the like, drain water from dairy product plants, fishery processing plants, slaughterhouses, etc. which contains water soluble protein at a high level, drain water from pulp plants, photo developing waste liquid, car wash drain water containing a mixture of car polishing wax and detergent and the like by the use of porous ceramics provided with amorphous pore surfaces.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: July 2, 2002
    Inventor: Shun'ichi Kumaoka
  • Patent number: 6395184
    Abstract: Invention relates to methods for water removal from oil, oil products, gas condensate, and liquid hydrocarbons. The suggested invention aims at a more efficient water removal from the flows of hydrocarbons of different origin. Technical task of water removal is implemented via the selective filtration of hydrocarbons through a filtering element consisting of three tilted beds, wherein the first and the third beds are made of a porous-cellular metal or alloy with hydrophobic surface, while intermediate one is made of hydrophilic materials such as the porous-cellular metal or alloy with modified surface, celluloid foam or the cartridges filled with glass balls or glass fiber. The suggested method allows a high degree of water removal from the hydrocarbon medium under continuous regime without water phase settling. Apparatus for the implementation of this method is also described.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: May 28, 2002
    Assignee: Obschestvo s Ogranichennoi Otvetstvennostju “Sibmetallservis”
    Inventors: Valery Ivanovich Bukhtiyarov, Vyacheslav Vladimirovich Erokhin, Vladimir Ivanovich Serbinenko, Vladimir Vladimirovich Serbinenko
  • Publication number: 20020060188
    Abstract: The invention relates to a system for extracting toxins from biological tissues. The system comprises a lixiviator, an ion-exchange column, a diatomaceous silica-active carbon column, and a vacuum concentrator. Twenty to one hundred kilograms of raw material can be processed at one time when puffer fish ovaries are used as the starting material.
    Type: Application
    Filed: March 28, 2001
    Publication date: May 23, 2002
    Inventors: Maoqing Zhou, Frank Hay Kong Shum
  • Patent number: 6383540
    Abstract: A method of treating whey for demineralization purposes, the method comprising a stage of separating out salts by transfer through electrodialysis or nanofiltration membranes, wherein, upstream from this separation stage, the method comprises in succession at least one step of exchanging divalent cations for protons and at least one step of exchanging divalent anions for chloride ions.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: May 7, 2002
    Assignee: Eurodia Industrie S.A.
    Inventor: Roland Noel
  • Patent number: 6375850
    Abstract: A method for removing accumulated metals from a cleaning solution is provided. After removal of the metals, the cleaning solution can be discharged or recycled. The process manipulates the pH levels of the solution as a means of precipitating solids. Preferably a dual phase separation at two different pH levels is utilized.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 23, 2002
    Assignee: United States Enrichment Corp.
    Inventor: Lewis E. Deacon
  • Patent number: 6358474
    Abstract: An apparatus for isolating cell material from a tissue system and/or a liquid includes (1) a vessel open at the top, into which the cell material to be isolated can be introduced in the tissue system and/or the liquid; and (2) a separating device having a stamp-shaped configuration and including a flat separating disk having a peripheral edge fitting with the inner walls of the vessel in a fluid-tight manner and presenting at least one passage opening which is covered by a filter membrane, and which device can be inserted from the top into the vessel. The isolating disk pressurises the cell material inclusive of the tissue system and/or the liquid and acts thereupon with shearing forces by rotation. The cells and/or cell systems pass through the pores of the filter membrane whereas the residual tissue material is retained.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: March 19, 2002
    Assignee: Fraunhofer Gesellschaft zur Förderung der Angewandten Forschung E.V.
    Inventors: Hannes Dobler, Claus Kuhn, Hans Lindner, Stefan Kiesewetter, Jürgen Bernhagen, Gabriele Tolle, Günter Tovar
  • Publication number: 20020027107
    Abstract: Proposed is a method for purifying and neutralizing polluted liquids, which method comprises the steps of: passing the liquid through a dispersed filtering material with particles of size 0.1-3.0 mm and additional electrode cells; before and after said passing of the liquid through the filtering material periodically regenerating a filter and applying electrical field to the filtering material in purification and/or regeneration stages wherein in the purification and neutralizing stages the filtering material and electrodes are distributed throughout the working volume in the ratio of 0.1-10.0 cm3/cm2 and compacting the same; discharging electrolysis gases in the direction not coinciding with the direction of purified liquid flow, and carrying out the regeneration stage by combined purification of both the filtering material and the electrodes in a flow of slurry formed while loosening the dispersed material in inter-electrode regions by a factor of 1.2 to 3.0.
    Type: Application
    Filed: May 14, 2001
    Publication date: March 7, 2002
    Applicant: EET Inc.
    Inventor: Vitaly Sergeevich Andreev
  • Patent number: 6348155
    Abstract: A system and method for purifying water in large quantities for drinking. The system comprises a housing having a water inlet, filtering means connected to the water inlet for filtering sediment and particulate matter from the water, an inlet pump to keep the water flowing through the housing at a predetermined pressure and a mixed bed multimedia unit connected to the filtering means for removing pollutants and controlling organic growth from the water. There is also an ultra-violet treatment means connected to the mixed bed multimedia unit for subjecting the water in the system to ultraviolet radiation and carbon block filtration means disposed for a final filtering prior to dispensing the water at one or more dispensing. There is also a bottle washing means provided within the housing for cleaning water bottles prior to filling with the purified water. The system can supply drinking water for entire communities, yet is portable enough to be easily transported to disaster areas.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: February 19, 2002
    Assignee: WaterChef, Inc.
    Inventors: David A. Conway, Thomas J. Smith, Peter Sorensen, Sean Doyle
  • Patent number: 6348153
    Abstract: A process and apparatus for treating the heavy hydrogen isotope content of the contaminated water by contacting the contaminated water with a molecular separation material including a support medium carrying a plurality of hydration sites having associated waters of hydration, whereby a portion of the waters of hydration are replaced with heavy hydrogen isotope water molecules from the contaminated water. The hydrogen isotope water molecule content of the contaminated water is thus decreased. The molecular separation material is preferably a polymer, such as a polystyrene/divinyl benzene cross-linked polymer, having hydration sites with associated waters of hydration. Preferred hydration sites are obtained by reacting the polymer, which has been sulfonated or phosphonated to create reactive sites, with a salt of, for example, aluminum, sodium, magnesium, copper, zinc, cobalt, iron, nickel, manganese, potassium and chromium.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: February 19, 2002
    Inventors: James A. Patterson, Louis E. Furlong, Martin J. Gruber
  • Patent number: 6334958
    Abstract: A process for minute dosing of effluent in a gravity media filter includes filtering incoming sewage in a pre-filter to produce a liquid effluent filtered to less than 100 microns, and pumping the effluent from the pre-filter to a pulse-feeding device preferably comprising a pressure vessel having a controlled pulsing unit. Effluent in the vessel is intermittently discharged in short pressure pulses volume controlled at preselected time intervals. The effluent from the pulse feeding device is forward pulse-fed to an array of drip irrigation emitters spread out over a surface area of a gravity filter containing a filter media such as a sand and gravel filter. Small doses of effluent are fed to the surface area of the gravity media filter by the emitters at a rate substantially less than a standard drip irrigation rate, owing to the intermittent pressure pulses. One preferred drip rate is greatly less than 2 liters per hour.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: January 1, 2002
    Inventor: Rodney Ruskin
  • Patent number: 6334955
    Abstract: A wash water pipe having a flushing valve inserted therein is connected with a concentrated water outlet pipe connected to a concentrated water outlet of a fresh water generating cartridge. A timer controls opening and closing of the flushing valve. The flushing valve is periodically opened during interruption of fresh water generation work with the fresh water generating cartridge or during fresh water generation work, or opened simultaneously with interruption of fresh water generation work or when restarting fresh water generation work, for performing flushing. Thus, the linear velocity on the surface of a reverse osmosis membrane of the fresh water generating cartridge is increased and impurities remaining on the membrane surface are discharged from the fresh water generating cartridge.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: January 1, 2002
    Assignee: Nitto Denko Corporation
    Inventors: Toshiyuki Kawashima, Ichirou Kawada
  • Publication number: 20010052497
    Abstract: Systems and methods for collecting blood substantially free of residual air and undesired matter also assure that accurate crossmatching and typing of cellular blood components can be done prior to transfusion.
    Type: Application
    Filed: June 1, 1998
    Publication date: December 20, 2001
    Inventors: BRYAN J. BLICKHAN, DANIEL LYNN