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6113795 |
Process and apparatus for size selective separation of micro- and nano-particles
Processes and apparatuses are provided for continuously harvesting particles from organic solution-laden near-critical and supercritical fluids. Broadly, the processes and apparatuses utilize a...
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6093325 |
Method of dye removal for the textile industry
The invention comprises a method of processing a waste stream containing dyes, such as a dye bath used in the textile industry. The invention comprises using an inorganic-based polymer, such as...
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6083401 |
Separative membrane and method for using this membrane
The present invention concerns a separative membrane, as well as a separation device containing this membrane, and a method for using this device. The membrane of the present invention comprises a...
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6024880 |
Refining of used oils using membrane- and adsorption-based processes
Disclosed is a method suitable for treating used oil to remove contaminants including ash and color contaminants therefrom to provide a purified oil product. The method comprises the steps of...
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6004466 |
Recovery and reuse of sugar-derived nonionic surfactants from aqueous solutions
Contaminated aqueous systems can be cleaned using an ultra-filtration process that allows for the recovery of high yields of the surfactant employed therein for recycle and reuse. The system...
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5989433 |
Method of treating a photographic processing solution
The present invention concerns a method of extracting halide ions contained in a photographic processing solution. The invention concerns a method for the selective extraction of halide ions using...
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5968585 |
Process for recovery of protein from aqueous media in corn wet milling
An improved corn wet milling process is disclosed. In a process in which corn kernels are steeped in an aqueous solution and are milled to facilitate the separation of the components thereof, in...
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5961835 |
Process and installation for the separation of heavy and light compounds by extraction using a supercritical fluid and nanofiltration
A process and installation for the separation of heavy and light compounds is provided. According to the process, a solid or liquid phase containing the compounds to be separated is contacted with...
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5954968 |
Apparatus and method for separating heavy isotopes of hydrogen from water
An apparatus and method for separating oxides of heavy isotopes of hydrogen (deuterium oxide and oxides of tritium oxide) from water which is contaminated with these heavy hydrogen isotopes such as...
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5951871 |
Method and apparatus for separating liquid-liquid mixtures
A method and apparatus for separating liquid-liquid mixtures such as temperature sensitive mixtures, the method converts the liquid mixture into a spray and sparys the mixture against one side of a...
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5942119 |
Separation process using zeolite membrane
The present invention is an improvement in a separation process. When molecular sieve membranes are used in a separation process transport flux decays over time. It has been discovered that the...
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5925254 |
Process for separating sodium from aqueous effluents resulting from the reprocessing of spent nuclear fuel elements
The invention relates to a process for separating sodium from aqueous effluents resulting from the reprocessing of spent nuclear fuel elements. According to the invention, the effluent (3) is...
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5900151 |
Method for sulphate removal magnesium chloride brine
Method for sulphate removal from concentrated MgCl 2 solutions, where the solution is subjected to a high pressure nanofiltration process applying membranes having a dominantly negative surface...
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5876605 |
Preparation of plasma or serum sample from whole blood
The method of the invention is for preparing a plasma or serum sample from whole blood and includes mixing an aqueous solution of an inorganic salt or an amino acid or salt thereof with the whole...
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5871650 |
Supported zeolite membranes with controlled crystal width and preferred orientation grown on a growth enhancing layer
The present invention is directed toward a new zeolite membrane which exhibits a columnar cross-sectional morphology and preferred crystallographic orientation comprising a porous substrate having...
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5858240 |
Nanofiltration of concentrated aqueous salt solutions
Nanofiltration processes using one or more conventional nanofiltration membrane modules under a positive applied pressure is used to selectively change the concentration of one solute, such as...
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5858238 |
Salvage of autologous blood via selective membrane/sorption technologies
Methods and apparatuses for salvaging blood from a patient are disclosed. A blood salvaging and/or blood processing circuit coupled to a cardiopulmonary bypass circuit, cardiotomy circuit, or...
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5855788 |
Chemically charged-modified filter for removing particles from a liquid and method thereof
A chemically charged-modified filter for removing charged, micron to sub-micron sized particles from an aqueous liquid, the filter being composed of a filter sheet having a plurality of individual...
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5846428 |
Method for modifying the surface of a polymer membrane, and a membrane thus modified
The present invention concerns a method for modifying the transfer characteristics of a porous organic or inorganic membrane, in which a) on the said membrane, at least one layer is formed by...
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5843317 |
Recovery and reuse of anionic surfactants from aqueous solutions
Improved surfactant recovery upon ultrafiltration of a surfactant-containing aqueous solution can be obtained using a system comprising anionic surfactants.
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5834633 |
Device for concentrating trace components in a liquid
A probe device for use in measuring trace quantities of a component in a liquid environment comprises: (i) a membrane which is permeable to the component; and (ii) a layer of a material capable of...
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5792358 |
Method for the separation of a hydrophobic liquid phase melted medium into high and low melting point fractions
A method for separating an oil or anhydrous fat in hydrophobic liquid phase into a high melting point fraction and a low melting point fraction. The method comprises a step of tangential flow...
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5785860 |
Upgrading heavy oil by ultrafiltration using ceramic membrane
A large pore (500°-2000° A) ceramic membrane is used to separate asphaltenes from heavy crude oil. Permeate is recycled to the feed for an initial period, during which the pores are deliberately...
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5773076 |
Process for recovery of insoluble protein from steep water
An improved corn wet milling process is disclosed, in which gluten is recovered from steepwater by membrane filtration and is incorporated in a corn gluten meal product. The process can include the...
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5762897 |
Method for manufacturing hydroxylamine
An improved ion exchange process for purifying and/or concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions wherein ion exchange process conditions...
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5747089 |
Method of making molasses product having low hygroscopicity and sufficient non-caking properties
A process for manufacturing a high molecular weight molasses product having improved drying properties, which includes: feeding starting material molasses having a RT value of 8-45% and a color of...
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5700375 |
Particle loaded membranes as oxidant scavengers
An efficient method removes oxidants from fluids (gases and liquids, particularly air) by means of solid phase extraction or reaction. The solid phase extraction or reaction medium comprises a...
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5681473 |
Membrane separation process
This invention relates to membrane separation of organic solubilized rhodium-organophosphite complex catalyst and free organophosphite ligand from a homogeneous non-aqueous hydroformylation...
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5670053 |
Purification of gases from water using reverse osmosis
A process for purifying water including removing cations, anions and carbon dioxide and/or ammonia from water feed stream to produce high purity water having a resistivity of greater than 1...
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5645727 |
On-line ozonation in ultra pure water membrane filtration
Particle filtration of a feed of highly corrosive ultra pure water and contaminants is disclosed through a metal oxide membrane on ceramic support in combination with on-line ozonation. In one...
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5635071 |
Recovery of carboxylic acids from chemical plant effluents
Provided is a method of removing carboxylic acids from effluent streams comprising the steps of pretreatment which may include chemical conditioning, clarification and filtering the effluent stream...
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5626761 |
Chemical and particulate filtration system/apparatus
A chemical and particulate filtration system and method are disclosed. The method includes contacting a liquid to be filtered, in a reverse flow manner, with a molecular absorption filter media and...
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5624566 |
Method and apparatus for recovering carboxylic acids from dilute solutions
A method for recovering carboxylic acids from a dilute aqueous solution thereof having a concentration below about ten percent (10%) by weight, which includes passing the dilute acid solution...
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5618433 |
Processes for separating and concentrating certain ions from mixed ion solutions using ion-binding ligands bonded to membranes
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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5616249 |
Nanofiltration apparatus and processes
Improved nanofiltration apparatus and processes utilizing thin film composite asymmetric nanofiltration membranes in which the thin film semi-permeable barrier layer consists of substantially "all...
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5611931 |
High temperature fluid separations using ceramic membrane device
A high temperature ceramic membrane device for separation of fluids at high temperature, the device comprises: (a) a housing having: (i) an entrance for introducing fluids to the housing to be...
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5607592 |
Process and device for the separation of substances dissolved in the washing water used in processing bath of a photographic film
The present invention concerns a process and a device for the separation of substances dissolved in the washing waters used in a processing bath for a photographic film. The photographic film,...
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5605631 |
Membranes
Novel membranes comprise crystals of a zeo-type material carried by a porous support. The crystal growth of the zeo-type material is essentially continuous over the pores of the support and the...
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5567664 |
Supported zeo-type membrane
Novel membranes comprise crystals of a zeo-type material carried by a porous support. The crystal growth of the zeo-type material is essentially continuous over the pores of the support and the...
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5552055 |
Photofinishing effluent purifying process and apparatus
The invention provides a process and apparatus for on-site purification of photofinishing effluent produced by mini-lab photofinishing apparatus and the like. The process includes passing the...
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5534151 |
Process for separating and recovering halocarbons from mixtures thereof
A process is disclosed for separating components of an azeotropic or azeotrope-like mixture containing only organic compounds at least one of which compound is a halocarbon comprising contacting...
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5525371 |
Method for cleaning parts soiled with oil components and separating terpenes from oil compositions with a ceramic filter
A method is provided for cleaning parts soiled with oil components and seating terpenes from oil compositions using filters having suitable pore sizes to allow terpene components to pass through...
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5518624 |
Ultra pure water filtration
Ceramic filtration of a feed solution of ultra pure water and particle contaminants is disclosed through a metal oxide membrane on ceramic support. In one aspect, the filtering of ultra pure water...
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5508196 |
Method of continuously preparing a sterile culture medium
A method for continuously preparing a sterile culture medium comprises combining separate unsterilized fluid components in separate streams into a single mainstream. The mainstream is applied to a...
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5501797 |
Process for recovery of raw materials in the aspartame preparation process
A process is described for the recovery of raw materials in the aspartame preparation process from aqueous process streams which also contain dissolved salt. The process comprises subjecting the...
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5492627 |
Method for separating mercury from fluids using composite articles
Composite articles are useful for separating mercury from fluids. The composite articles can be porous supports comprising an inert substrate having immobilized thereon finely divided gold...
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5492625 |
Method of recovering carboxylic acids from dilute solutions
A method for recovering carboxylic acids from a dilute aqueous solution thereof having a concentration below about ten percent (10%) by weight, which includes passing the dilute acid solution...
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5491259 |
Process to produce aminocarboxylic acids containing low residual salt
A method for producing an aqueous solution of an aminocarboxylic acid from an aqueous solution of an alkali metal salt of the aminocarboxylic acid is disclosed. The first step of the method is to...
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5484531 |
Process for the removal of inorganic salts
The intention is a process for removing inorganic salts from aqueous mixtures of organic compositions capable of forming micelles. The aqueous mixture is subjected to ultrafiltration to remove the...
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5482634 |
Purification of aqueous reaction or washing medium containing cellulose ethers
In a process for purifying an aqueous liquid reaction and/or washing medium containing i) hot water-insoluble cellulose ethers and ii) hot water-soluble cellulose ethers and/or macromolecular...
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