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7575687 |
Membranes and methods useful for caustic applications
The invention provides methods for purifying caustic feed streams using membranes that comprise polysulfonamide matrices.
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7566402 |
Semi-permeable membrane for use in osmosis, and method and plant for providing elevated pressure by osmosis to create power
The present invention concerns a semi-permeable membrane for use in osmosis consisting of one thin layer of a non-porous material (the diffusion skin), and one or more layers of a porous material...
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7501064 |
Integrated electro-pressure membrane deionization system
An integrated treatment system using electrodialysis and pressure-driven membranes for deionizing and decontaminating liquids to a near-pure quality for use or reuse in industrial or municipal...
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7491334 |
Method of treating reverse osmosis membranes for boron rejection enhancement
The present invention provides a method of treating a reverse osmosis membrane for boron rejection enhancement, comprising contacting the reverse osmosis membrane with a chemical coating such as...
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7473412 |
Process for the purification of aqueous peroxygen solutions, solutions obtainable thereby and their use
Process for the purification of aqueous peroxygen solutions comprising the treatment of an aqueous peroxygen solution with (a) at least one membrane purification step, (b) optionally at least one...
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7455777 |
Method of adjusting levels of dissolved compounds in beverages
A method of producing multiple beverage products from a solution is presented. The method comprises providing the solution in a first container, with the solution having a concentration of a...
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7427358 |
Process for the recovery of tyrosol and hydroxytyrosol from oil mill wastewaters and catalytic oxidation method in order to convert tyrosol in hydroxytyrosol
A for preparing Tyrosol and/or Hydroxytyrosol from oil mill wastewaters. includes:
a) Microfiltration (MF), Ultrafiltration (UF). Nanofiltration (NF) and Reverse Osmosis (RO) of the OMW;...
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7318898 |
Polymeric membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow...
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7303681 |
Dynamic membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow...
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7160464 |
Methods for removal, purification, and concentration of viruses and methods of therapy based thereupon
The invention is based on the discovery that certain membranes, which include side chains or molecular “brushes” having, for example, tertiary amino functional groups, can be used as highly...
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7144511 |
Two stage nanofiltration seawater desalination system
The present invention is directed to a method and apparatus for desalinating seawater utilizing a two stage seawater desalination system, a first stage including at least one high performance...
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7138058 |
Acid stable membranes for nanofiltration
Semi-permeable membranes are described that allow for the efficient processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able...
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7018539 |
Treatment of shipboard-generated oily wastewaters
A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane...
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6974544 |
Membrane filtration
A method for membrane filtration of effluent water containing suspended matter reduces membrane clogging and improves filtration capacity of the membrane. The method includes adding a dose of a...
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6972093 |
Onboard fuel separation apparatus for an automobile
An onboard fuel separation apparatus separates a material fuel (gasoline) into a high-octane fuel having a higher octane value than the material fuel and a low-octane fuel having a lower octane...
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6936173 |
Carbohydrate purification using ultrafiltration, reverse osmosis and nanofiltration
The invention provides methods for purifying carbohydrates, including oligosaccharides, nucleotide sugars, and related compounds, by use of ultrafiltration, nanofiltration and/or reverse osmosis....
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6872316 |
Recovery of xylose
The invention relates to a process of producing a xylose solution from a biomass hydrolysate by subjecting the biomass hydrolysate to nanofiltration and recovering as the nanofiltration permeate a...
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6869536 |
Lubricant, magnetic disk and magnetic disk apparatus
A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service...
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6857162 |
Cleaning and/or treatment device
The present invention relates to a cleaning and/or treatment device for cleaning and/or treating surfaces such as floors, pavements and carpets. The invention particularly relates to a cleaning...
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6852223 |
Asymmetric porous polytetrafluoroethylene membrane and process for preparing the same
The present invention relates to an asymmetric porous polytetrafluoroethylene membrane comprising a dense skin layer and a continuously foamed porous layer, (1) the dense skin layer having a...
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6821430 |
Method of treating reverse osmosis membrane element, and reverse osmosis membrane module
In the treatment, a reverse osmosis membrane element having a polyamide skin layer is loaded in a pressure vessel in a membrane separator and contacted with a bromide-containing aqueous solution of...
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6818333 |
Thin zeolite membrane, its preparation and its use in separation
Described is a supported zeolite membrane that consists of a zeolite/substrate composite layer that exhibits, in the n-butane/isobutane separation, a permeance of n-butane of at least 6.10 −7 ...
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6797172 |
Degumming of edible oils by ultrafiltration
A process for refining and degumming edible oils by ultrafiltration which produces a permeate fraction with reduced phosphatide content and retentate with increased phosphatide content, and wherein...
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6783682 |
Salt water desalination process using ion selective membranes
The invention is directed to an improved desalination process to produce potable water. The process represents an improvement of hybrid of membrane and desalination technologies. The improvement of...
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6770202 |
Porous membrane
The present invention provides integral porous membranes comprising an amorphous halopolymer, as well as processes for preparing the membranes, and devices comprising the membranes. An example of...
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6723422 |
Composite reverse osmosis membrane and process for preparing the same
A composite reverse osmosis membrane is described, which includes a polyamide skin layer on a porous support, with a contact angle between the polyamide skin layer surface and water of 45° or...
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6723247 |
Method for processing a color reversal photographic film
The invention relates to a low-water-consumption method for processing an exposed color reversal photographic film. This method comprises the circulation of this exposed film in: i) a black and...
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6719905 |
Polymeric membranes functionalized with EGTA ligands, and process of separating ions
Compositions and methods for selectively binding specific metal ions, such as Ca 2+ and Cd 2+ , contained in a source solution are disclosed and described. This is accomplished by the use of a...
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6648978 |
Membrane filtration for thickening and starch washing in corn wet milling
An improved corn wet milling process is disclosed in which a first stream comprising water, starch, and protein (e.g., gluten) is generated by separating fiber from wet milled de-germed corn...
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6646177 |
Method for separation of p-xylene
A method for separating p-xylene by separating and recovering only p-xylene from a p-xylene-containing raw material mixture under high-temperature and high-pressure conditions using a zeolite...
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6645383 |
Process and apparatus for blending product liquid from different TFC membranes
A process and apparatus for membrane treatment of a feed liquid to form a product liquid includes feeding a feed liquid, typically an aqueous solution such as tap water, to a primary membrane. The...
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6616847 |
Method for producing crystals from solutions
The invention relates to a method for producing crystals from thermally sensitive solids. According to this method, the solid is dissolved in at least one solvent and the solution is concentrated...
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6602418 |
Solution dewatering with concomitant ion removal
One of the biggest needs in the separations and waste handling and reduction area is a method for dewatering ion-containing solutions. Unexpectedly, it has been found that phosphazene polymers can...
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6544422 |
Method of making a composition for separating and concentrating certain ions from mixed ion solutions
A method for removing, separating, and concentrating certain selected ions from a source solution that may contain larger concentrations of other ions comprises bringing the source solution in...
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6419829 |
Membrane process for making enhanced flavor fluids
A process using a hydrophobic membrane separation process for making an enhanced flavor fluid, particularly a low-alcohol brew, having improved flavor is disclosed.
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6413425 |
Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same
A reverse osmosis composite membrane comprises a sponge layer, and a separation layer formed on a surface of the sponge layer, wherein at least one substance selected from the group consisting of...
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6372144 |
Method for concentrating or washing macromolecules in a solution and device for carrying out said method
A device for removing or replacing solvent in a liquid sample containing macromolecules includes a concentration chamber having an aperture adjacent to the upper end of the concentration chamber...
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6358754 |
(Bio)chemical reagent solid phases, process for their production and their applications
Novel solid phase reaction supports are disclosed. The solid phase reaction supports include (a) a solid phase carrier having a multiplicity of NH 2 functional groups; (b) a coupling compound...
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6348154 |
Methods to remove metals from water
The present invention provides methods to remove metals from water in a cost effective and efficient manner using an inorganic cross-flow filter.
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6312655 |
Method for the removal of carbon dioxide from a process gas
The invention relates to the absorption of carbon dioxide from a process gas using a solution of potassium carbonate, potassium bicarbonate, diethanolamine and potassium vanadate, followed by...
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6306609 |
Methods for the detection of nitric oxide in fluid media
In accordance with the present invention, there are provided articles for use in non-invasive measurements of nitric oxide levels in a variety of fluid media, e.g., in mammalian body fluids....
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6280853 |
Composite membrane with polyalkylene oxide modified polyamide surface
A composite membrane and method for making the same, comprising a porous support and a crosslinked polyamide surface having polyalkylene oxide groups grafted thereto. The subject membrane provides...
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6252038 |
Method for selectively separating hydrocarbons
A method for separating specific hydrocarbons from a hydrocarbon mixture of hydrocarbons using a membrane made of a fluorine-containing polyimide resin having high separation ability with regard to...
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6241892 |
Method of reducing the contamination level of a solvent purification system, and such solvent purification system
A solvent purification system and method of reducing the contamination level thereof are provided. Contaminated solvent is directed under pressure across at least one cross-flow membrane unit, and...
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6210584 |
Method for treating an aqueous solution containing ionic species to be extracted selectively
A method for selectively extracted species from an aqueous solution which comprises contacting the aqueous solution with a membrane capable of selectively transporting species from a liquid to...
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6207058 |
Recovery and reuse of nonionic surfactants from aqueous solutions
Contaminated aqueous systems can be cleaned using an ultra-filtration system that allows for high recovery yields of the surfactant employed therein for recycle and reuse. The system employs...
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6187196 |
Membrane separation of components in a fluid mixture
Provided is a membrane separation method for separating a first component (106) from a second component (108) in a fluid mixture (102). The method is particularly useful for separating a more...
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6177011 |
Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same
A reverse osmosis composite membrane that has a high salt rejection, a high water permeability, and a high fouling tolerance, and permits practical desalination at a relatively low pressure is...
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6162361 |
Plating waste water treatment and metals recovery system
A process for removing heavy metal ions or cyanide ions from a waste water stream originating in a metal plating plant or a mine comprising the steps of pretreatment in which the waste water stream...
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6117328 |
Adsorbent-filled membranes for pervaporation
Pervaporation membranes are used for removing volatile organic compounds from wastewaters. These pervaporation membranes are prepared by dispersing at least one hydrophobic adsorbent such as...
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