Matches 251 - 300 out of 494 < 1 2 3 4 5 6 7 8 9 10 >
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5252221 Method for purifying blood plasma  
A method for purifying blood plasma by treating said blood plasma with powdery or granular active carbon whereby the purification is carried out continuously by leading the blood plasma, having a...
5246589 Repaired filtration elements for polymer manufacture  
A repair method for filter elements such as those used to filter polyester during the later stages of polyester manufacture in which the filter media is a particulate solid media arranged in a...
5236597 Sorption of carboxylic acids by means of rubber  
A method of using rubber, preferably from tire recycling, for absorbing organic carboxylic acids containing from 1 to 3 carbon atoms optionally substituted with from 1 to 5 halogen atoms....
5234601 Apparatus and method for controlling regeneration of a water treatment system  
A water treatment apparatus has a tank that contains a resin bed through which water flows. The apparatus is controlled by occasionally measuring the conductivity of the resin bed at two spaced...
5232953 Method and apparatus for waste brine management in water conditioners  
A water softening device is provided with a waste storage tank for receiving waste liquid, such as hard water used to draw out brine from a brine storage tank, as well as the used brine itself...
5230805 Magnetically stabilized fluidized particles in liquid media  
A method for the preparation of an ion exchange sorbent containing at least one anion exchange resin, a ferromagnetic substance, and a water permeable organic polymer binder, as well as a process...
5211851 Water conditioning apparatus and method for conditioning water  
A water conditioning or purifying apparatus for preparing drinking water from tap water, incorporating a water inlet at the bottom area and a water outlet at the cover area. The water conditioning...
5196122 External regeneration system for mixed bed ion exchangers  
A method for regenerating exhausted anion and cation exchange resins for service in an associated mixed bed demineralizer. The method utilizes a portion of the exhausted anion and cation resins to...
5190660 Ion complexation by silica-immobilized polyethyleneimines  
Metal ions are removed from solution by complexing with an immobilized polyethyleneimine, formed by first bonding a silane-propyl bridge to a substrate particle of silica or silicate, larger than...
5190659 Contamination removal system employing filtration and plural ultraviolet and chemical treatment steps and treatment mode controller  
An improved cross-flow granular filtration system involving the use of ultraviolet, ozonation, chlorination, reactive granular filtration media, chemical regeneration, and central flow control is...
5185379 Method for regenerating water softener in a washing machine  
A method is provided for regenerating a mass of active resin contained in a water softening device connected in the water filling circuit of a washing machine. The water softener device has an...
5182251 Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions  
A method for the removal and concentration of desired ions such as Sb 3 +, Zr 4 +, Zn 2 +, Pu 4 +, Hf 4 +, Cu 2 +, Ni 2 +, Fe 3 +, Cd 2 +, Ag + , and Hg 2 + from a multiple ion source solution...
5176836 Regenerable biocide delivery unit  
A method and apparatus are disclosed for maintaining continuous, long-term microbial control in the water supply for potable, hygiene, and experimental water for space activities, i.e., space...
5175110 Analysis of ions present at low concentrations in solutions containing other ions  
A method of selectively and quantitatively removing and concentrating at least one selected ion from a multiple ion solution in which other ions are present is disclosed. The method comprises (a)...
5173470 Compositions and processes for removing, separating and concentrating desired ions from solutions using sulfur and aralkyl nitrogen containing ligands bonded to inorganic supports  
A method for the removal and concentration of desired ions such as Pd(II), Pt(IV), Pt(II), Pd(IV), Ru(III), Ru(II), Au(III), Os(IV), Au(I), Cu(I), Cu(II), Ag(I), and Hg(II) from a multiple ion...
5166220 Water softening process  
An improved process for regenerating the ion exchange resin in a water softening system. The process substantially reduces the amount of water and salt required for regeneration of the resin. The...
5162084 Process for monitoring and controlling an alkanolamine reaction process  
Monitoring and controlling the reactivation of an alkanolamine solution containing heat-stable salts of such alkanolamine with stronger acid anions and weaker acid anions by contacting the...
5156825 Adsorption and elution of metal from ion exchange resin  
Method and apparatus (10) includes the use of multiple containers (B-1-B-3) containing a weak base ion resin (R) through which plating rinse water (W) is pumped with precious metal such as...
5141611 Removing and recovering plant polyphenols  
Polyphenolic substances such as food dyes, tannins, fruit juices and wine colorings are removed from a solution by adsorption onto a regeneratable adsorbent polyamide of extended surface and...
5141636 Purification system  
A system for prolonging the life of a GAC water treatment device in which an ultraviolet light transparent material is used to constrain water to flow over carbon surfaces configured to receive...
5139682 Zeolite enhanced organic biotransformation  
An improved method of removing contaminants from gas or liquids is disclosed. The contaminated fluid is brought into contact with a zeolite. The zeolite is then transferred to a vessel containing a...
5133843 Method for the recovery of metals from the membrane of electrochemical cells  
A method for rejuvenating a membrane or diaphragm from an electrochemical cell which comprises the steps of treating the membrane or disphragm with an inorganic acid at an elevated temperature so...
5132020 Sorption of alcohols using zeolite beta  
A process for the sorption of alcohols by using zeolite Beta as a sorbent. The process is useful for separating alcohols, such as isopropanol and phenol, from an aqueous solution. the process is...
5124362 Method for removing organic foulants from anion exchange resin  
A method for removing organic foulants such as organic sulfonates from an anion exchange resin comprises treating the anion exchange resin at an elevated temperature with a defouling solution...
5116511 Water treatment system and method for operating the same  
A treatment system for removing metal ions from water and a method for cleaning the system. Contaminated water is passed through a plurality of columns having ion-extracting agents therein. When...
5116510 Separation of liquid mixtures by thermal swing adsorption  
A new thermal swing adsorption process for the separation of a bulk liquid mixture into its respective components wherein a novel rinse step is employed to achieve high product recovery with a low...
5114592 Procedure for separating arsenic from waste material  
The invention involves a process as well as apparatus for the separation of arsenic from waste material. The process includes precipitation of arsenic in the form of low solubility calcium...
5112392 Recovery process for electroless plating baths  
A process for removing, from spent electroless metal plating bath solutions, accumulated byproducts and counter-ions that have deleterious effects on plating. The solution, or a portion thereof, is...
5110480 On-line rejuvenation of spent absorbents  
The process relates to on-line rejuvenation of adsorbent beds which are used for removing mercury from mercury contaminated feeds.
5094694 Process for demineralizing a sugar-containing solution  
Improved method for demineralizing a sugar-containing solution using an ion exchange resin in bead form wherein the volume average bead diameter is from 400 to 700 μm and the bead diameter...
5082570 Regenerable inorganic media for the selective removal of contaminants from water sources  
A regenerable inorganic media capable of removing contaminants by catalytic oxidation or reduction, as well as heavy metal adsorption, from well and surface water sources. The specific material is...
5078889 Selective removal of contaminants from water sources using inorganic media  
A process using a regenerable inorganic media capable of removing contaminants by catalytic oxidation or reduction, as well as heavy metal adsorption, from well and surface water sources. The...
5071563 Method for removing sulfate ions from aqueous solution of alkali metal chloride  
A method for removing sulfate ions from an aqueous solution of an alkali metal chloride is disclosed, in which the aqueous solution of the alkali metal chloride containing sulfate ions and...
5066404 Method for separating sodium and potassium by ion exchange  
A method for separating sodium and potassium from an aqueous solution containing such metals, which comprises selectively ion-exchanging sodium and potassium with titania hydrate (TiO 2 nH 2 O...
5066371 Removal of contaminants and recovery of metals from waste solutions  
A method for removal of at least one contaminant from a liquid is described, wherein a first step in liquid is introduced into a first of a plurality of liquid treatment containers and brought into...
5062957 Process for removing nitrates from water  
A process for the selective removal of nitrates from water using a combination of an ion exchange resin and a biological purification. In the process, an ion exchanger in the sulfate form is used...
5053138 Process for purifying an aqueous solution of N-methyl-morpholine N-oxide  
There is disclosed a process for purifying aqueous solutions of N-methyl-morpholine N-oxide (NMMO), such as spinning bath solutions incurred in the production of cellulose products, in which...
5043075 Method of removing amines  
There is disclosed a method of removing amines from aqueous solutions thereof, in particular from waste waters obtained in cellulose processing. The aqueous amine solutions are contacted with a...
5039419 Sulfur-containing hydrocarbon compounds and process of using same in recovering and concentrating desired ions from solutions thereof  
The invention has compositions of matter and process aspects. The compositions of matter aspect relate to two classes of new organic compounds, viz., A. intermediates which are sulfur-containing...
5039424 Method for treating an amine-containing waste water  
A method for treating an amine-containing waste water, which comprises conducting the waste water to active carbon.
5030358 Deactivation of phosphonium biocides  
Solutions of organophosphorus biocides which also contain dissolved oxygen are deactivated by adding a catalytic amount of activated carbon.
5026482 Separation of liquid mixtures by concentration swing adsorption  
The present invention is a concentration swing adsorption process for separating a liquid phase feedstock comprising a more adsorbable component (A) and a less adsorbable component (B) with respect...
5022997 Method for treating aqueous solutions  
Methods for treating aqueous solutions and for recovering specific chemical products from an aqueous solution by ion exchange or adsorption by passing the aqueous solution through a regenerable...
5022994 Fluid treatment system  
A method and apparatus for controlling a fluid treatment apparatus that includes a resin tank containing an ion exchange media. A control valve controls the regeneration cycle and includes a...
5021163 Catalytic destruction of sulfur-oxygen anions  
Anions containing sulfur and oxygen, e.g. thiosulfate, can be catalytically reduced using a protonated anion ion exchange resin as a catalyst. The process is preferably conducted in an aqueous...
5002670 Chemical waste treatment  
A method for continuously neutralizing quantities of acidic and alkaline waste materials is disclosed. Acidic and alkaline quantities are successively passed through the same weak ion exchanger....
4999113 Selective separation of thiocyanate ions from a scrubbing medium  
A process is provided for the selective removal of thiocyanate ions from a vanadium-containing loaded scrubbing solution used for oxidative hydrogen sulfide scrubbing. The thiocyanate ions are...
4999098 Modified membrane suppressor and method for use  
A suppressor for use in ion chromatography including at least an effluent flow channel separated by a charged membrane from a suppressor flow channel. A screen of the same charge as the membrane is...
4999112 Removal of thiamine monophosphate from a solution of thiamine  
Thiamine monophosphate is separated from a solution of thiamine phosphates containing thiamine monophosphate and cocarboxylase and having a pH of 2-7 by using a cation exchanger resin having a pK a...
4995984 Supported heteropolycyclic compounds in the separation and removal of late transition metals  
Compositions comprising carbon-based supports and containing heteropolycyclic compounds such as bipyridyl, phenanthroline or derivatives thereof are used in separation of dissolved late transition...
Matches 251 - 300 out of 494 < 1 2 3 4 5 6 7 8 9 10 >