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7585415 |
Fluid storage and purification method and system
A method of storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. A solvent mixture comprising an ionic liquid and a cosolvent is...
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7578941 |
Length-based liquid-liquid extraction of carbon nanotubes using a phase transfer catalyst
The present invention is generally directed to new liquid-liquid extraction methods for the length-based separation of carbon nanotubes (CNTs) and other 1-dimensional nanostructures. In some...
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7576162 |
Chemical process
The invention relates to a process for the production of a nitrogen containing epihalohydrin polymer involving reaction of a nitrogen-containing precursor selected from the group consisting of...
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7572376 |
Process for producing 1,3-propanediol
Disclosed herein are processes for the recovery of 1,3-propanediol from an aqueous feed stream. The present invention involves contacting an aqueous feed stream that comprises water,...
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7563373 |
Removal of phosphorous from wastewater
Processes, methods and systems are provided herein for lowering the concentration of phosphorus in wastewater. The process includes adding a suitable amount of an aluminum-based...
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7560028 |
Complex admixtures of clathrate hydrates in a water desalination method
Disclosed is a method that achieves water desalination by utilizing and optimizing clathrate hydrate phenomena. Clathrate hydrates are crystalline compounds of gas and water that desalinate water...
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7534851 |
Method for purifying wastewater
The present invention provides a method for treating water containing phenolic material such as bisphenol A, phenol, para tertiary butyl phenol, and 1,1,1-tris(hydroxyphenyl)ethane, as well as...
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7524469 |
Extractant composition including crown ether and calixarene extractants
An extractant composition comprising a mixed extractant solvent consisting of calix[4] arene-bis-(tert-octylbenzo)-crown-6 (“BOBCalixC6”), 4′,4′,(5′)-di-(t-butyldicyclo-hexano)-18-crown-6...
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7520993 |
Water treatment process for oilfield produced water
The invention relates to a method and system for treating an aqueous liquid containing dissolved minerals and dissolved hydrocarbons. Method steps and apparatus for treating a waste water feed...
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7517456 |
Method for treating landfill leachate
Methods for treating landfill leachate taught herein comprise: (a) coagulatively settling leachate; (b) filtering the resultant supernatant liquid through multistage cartridges; (c) filtering the...
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7514001 |
High recovery reverse osmosis process and apparatus
Processes and apparatus are disclosed for producing clear reverse osmosis retentates having silica concentrations which are substantially supersaturated in silica from feedwaters having silica...
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7501062 |
Process for permeation enhanced reactive extraction of levulinic acid
A process for permeation enhanced reactive extraction of levulinic acid from a liquid aqueous phase comprising levulinic acid, wherein the levulinic acid from the aqueous phase is brought into...
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7498402 |
Method for purifying material to be treated and method for producing coagulated material
A method of purifying a treatment target substance containing a fluorine-containing surfactant which includes removing at least part of the fluorine-containing surfactant from the treatment target...
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7495063 |
Reduced oligomer concentration in high purity polyalkylene glycols
Polyalkylene glycol compositions having reduced low molecular weight oligomers are disclosed. Some compositions, particularly polyethylene glycol compositions, have a number average molecular...
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7491333 |
Industrial waste water treatment process
A process for the treatment of industrial waste water. The process includes the steps of admixing partially-treated waste water containing precipitated impurities with a flocculating agent in a...
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7465395 |
Methods and compositions for removing residues and substances from substrates using environmentally friendly solvents
Environmentally friendly solvents used to dissolve or remove residues and/or substances from substrates wherein the residue and/or substance is contacted with a Generally Recognized As Safe solvent...
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7455797 |
Method and apparatus for producing particles using supercritical fluid
The present invention provides a method of producing particles via a supercritical fluid processing technique, an apparatus for carrying out the method and the particles produced thereby. The...
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7449591 |
Process of removing transition metals
A process of diminishing the concentration of a transition metal complex from a first solution by adding a solubility-enhancing compound that enhances the solubility of said complex in a second...
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7442309 |
Methods for reducing boron concentration in high salinity liquid
Methods of treating a high salinity liquid, such as seawater, containing boron are provided, including adjusting the pH of the liquid to about 8 to about 9.5, optionally adding a scale inhibitor to...
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7438817 |
System and method for treatment of acidic wastewater
A wastewater treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of wastewater to be treated entering into...
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7399414 |
Wet oxidation with the aid of a porous catalytic contactor
A process for oxidation of oxidizable materials which are dissolved or suspended in a liquid phase. A contactor in the form of a porous membrane is used. The contactor is designed such that an...
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7384557 |
Method and apparatus for removing solute from a solid solute-bearing product
The process and apparatus are for removing a solute from a solute-bearing solid product by means of a solvent which remains in liquid state throughout the entire oil extraction process. In one...
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7381332 |
Solid-liquid separation of oil-based muds
This invention relates to a method of achieving a solid-liquid separation of an oil-based mud comprising the step of contacting said oil-based mud with a water-in-oil emulsion comprising a polymer...
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7374685 |
Process for separating metallic from semiconducting single-walled carbon nanotubes
A method for separating semiconducting single-walled carbon nanotubes from metallic single-walled carbon nanotubes is disclosed. The method utilizes separation agents that preferentially associate...
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7368058 |
Method of generating fresh water and fresh-water generator
The present invention is a water processing method comprising the steps of separating boron-containing water in a reverse osmosis membrane module to provide a permeated water and subjecting a part...
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7351339 |
Method for the separation of acids from chemical reaction mixtures by means of ionic fluids
A process for removing acids from reaction mixtures using an auxiliary base, in which the auxiliary base: combines with the acid to form a salt which is liquid at temperatures at which the product...
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7332085 |
Method for the purification of an α-hydroxy acid on an industrial scale
The present invention relates to a method for the purification of an α-hydroxy acid on an industrial scale, in which the method involves: (a) subjecting an aqueous stream containing mainly...
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7326344 |
Process for the removal of metals by biosorption from mining or industrial effluents
A method and a plant to remove metals by biosorption from mining or industrial effluents comprising: (a) subject the effluent to at least one first stage of pre-treatment, selecting among:...
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7321048 |
Organometallic compound purification
A method of purifying an organometallic compound by heating the organometallic compound in the presence of a trialkyl aluminum compound and a catalyst.
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7320756 |
Method and apparatus for treatment of feedwaters by membrane separation under acidic conditions
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...
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7318899 |
Method of separating isotopes
A process in which isotopes of the same element belonging to the alkaline earth metals, transition elements and heavy metals having an atomic mass of less than 209, in particular lanthanide metals,...
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7318897 |
Method of removing spectator ions from aqueous suspension of solid particles
The present invention provides a method of removing spectator ions and contaminants from aqueous suspensions of solid particles. In accordance with the method of the invention, the solid particles...
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7311838 |
Method for the extraction and analysis of contents made from organic material
The present invention relates to a process for isolating constituents from organic material, comprising the following process steps:
a) freeze-drying of the organic material; b) extracting...
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7306735 |
Process for the removal of contaminants from water
The present invention provides a method of removing contaminants from water which includes the steps of first providing a water feed exposed to at least one hydrocarbon or chemical process. This...
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7264729 |
Process for reducing contaminants in condensate resulting from the conversion of bauxite to alumina
This invention relates to a process for reducing the contaminants in condensate resulting from the conversion of bauxite to alumina.
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7198722 |
Process for pre-treating and desalinating sea water
Water containing dissolved salts, such as calcium sulfate, calcium chloride, magnesium sulfate, magnesium chloride, sodium carbonate, sodium chloride, sodium sulfate, calcium bicarbonate, and...
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7195675 |
Chitosan-containing polysaccharide, method for preparing the same and use thereof
The present invention herein provides a chitosan-containing polysaccharide and a method for the preparation thereof as well as a medicine and a food containing the polysaccharide. The...
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7186394 |
Retarding agents for preparing purified brine
The invention relates to a process to produce brine of improved purity wherein a salt source, contaminated with sulphate ions and alkaline (earth) metal ions, is dissolved in water in the presence...
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7157003 |
Cyclic method for separating chemical elements present in an aqueous solution
The invention concerns a cyclic method for separating at least one chemical element E 1 from at least one chemical element E 2 from an aqueous solution containing said elements, which employs a...
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7144735 |
Electrodialysis method and apparatus for trace metal analysis
An electrodialysis method and apparatus are provided for treating a sample including trace metals in a matrix. Advantageously, the present invention allows for highly accurate detection of trace...
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7081204 |
Remediation of barium, bicarbonate and alkalinity in ground water
A method for reducing the total concentration of barium in a source of ground water, such that the water can safely be returned to the watershed or used for drinking water, is described. The...
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7074333 |
Recovery of linear nucleic acids by salt dilution and/or reduced pressure prior to continuous pressure differential ultrafiltration
A method of recovery of DNA fragments using ultrafiltration. The method of the present invention relates to the separation and/or fractionation of double stranded linear nucleic acids using...
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7063792 |
Method for separating metals such as zirconium and hafnium
A method for separating a metal (a) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state...
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7052599 |
Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors
An apparatus and method recycles the abrasive fluid or slurry effluent used in the polishing step in the manufacture of semiconductors. Agglomerations of abrasive grains built up in the slurry...
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7045066 |
Method of arsenic immobilization in crystalline form from water
A method of removing arsenic from water by using a reactor that is provided with a fluidized bed of carriers is disclosed. An arsenic-containing influent is mixed in the reactor with a sulfide...
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7033504 |
Method for recovering water soluble surfactants
Disclosed is a method for recovering and re-employing ionic surfactants from solutions, dispersions and emulsions of water and liquid hydrocarbons, by the addition of a second non-aqueous polar...
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7014770 |
Filtering method of a colloidal solution
A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of...
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6998051 |
Particles from supercritical fluid extraction of emulsion
A method of producing microparticles and nanoparticles of a solute via the extraction of solvent, having the solute dissolved therein, from an emulsion using a supercritical fluid. The solute to be...
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6994790 |
Whole blood collection and processing method
A method is disclosed for collecting and processing whole blood. Whole blood is collected at several remote donor sites and transported to a central blood-processing center, where information...
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6977045 |
Process for the fractionation of polymers
A process for the purification or fractionation of aqueous soluble polymers using an aqueous two-phase system is described. The concentrations of the polymer to be fractionated and of an aqueous...
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