The Graver Company

Rohm and Haas Company

Ecodyne Corporation

Graver Technologies, Inc.

Other

Shell Oil Comapny

Rutgers, the State University of New Jersey

Robert Kunin

Eli Salem

Peter A Yarnell

Nichole L Pennisi

Michael F Lemanski

Bruce L Libutti

Eugene Marie Van Kruchten

George C Flynn

Terrance Laterra

Louis I Blaine

Non-chloride containing regenerant compositions of potassium acetate or potassium formate, at least one surfactant and at least one chelating agent as well as methods for efficient regeneration of water softeners utilizing the regenerant compositions are disclosed. A preferred regenerant composition is a solution of potassium acetate or potassium formate with citric acid and octyl phenol ethoxylate.

Non-chloride containing regenerant composition for a strong acid cation exchange resin of a water softener

Regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate is disclosed. Preferably, the alkali metal is sodium. The combination can be naturally available sodium sesquicarbonate.

Methods for regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate

Provided herein are novel porous phosphate sulfur fertilizer particles which are in a continuous phase, and have applications in supplying soluble phosphates to plants and crops, thus increasing the yield of such crops. Also provided are novel methods of producing such porous phosphate sulfur fertilizer particles.

Phosphate sulfur fertilizer particles and methods for making same

A process for the preparation of an alkylene glycol by reacting an alkylene oxide with water in the presence of a solid catalytic composition which includes a strongly basic ion exchange resin coordinated with one or more anions, and a stabilising additive which is an acidic ion exchange resin. Preferably the acidic ion exchange resin is of the weakly acidic methacrylate type.

Catalyst stabilizing additive in the hydrolysis of alkylene oxides

A salt comprising the reaction product of nicotinic acid and an anion exchange resin having a degree of crosslinking with divinylbenzene of less than 4%. These salts are useful in reducing blood cholesterol levels.

Blood cholesterol reducing pharmaceutical composition

The invention provides a method for removing metal oxides and colloidal material from high-resistivity water streams at a relatively high removal efficiency. The method includes hydrating a highly ionized dual morphology ion exchange resin in a macroreticular, desiccated morphology to produce a macroreticular, hydrated morphology. A water stream which is brought into contact with the resin is purified. The water stream may, optionally, also be contacted with both a cation exchange resin and an anion exchange resin. The invention additionally provides a method for selecting ion exchange resins which are particularly suited for use in removing metal oxides from a condensate stream. The method serves to narrow the field of candidates for pilot-scale resin testing with industrial water streams.

Ion exchange resin having dual morphology

The invention provides a method for removing transition metal oxides and soluble cation species from condensate at a relatively high removal efficiency. The method includes hydrating a strongly acidic dual morphology cation exchange resin in a macroeticular, desiccated morphology to produce a macroreticular, hydrated morphology. Condensate which is brought into contact with the resin when it is in a hydrogen form is purified. The condensate may, optionally, also be contacted with an anion exchange resin. The invention additionally provides a method for selecting cation exchange resins which are particularly suited for use in removing metal oxides from a condensate stream. The method serves to narrow the field of condidates for pilot-scale resin testing with industrial condensate.

Cation exchange resins having an enhanced capacity for iron oxides

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 filter bed comprising a flocculated mixture of finely divided active particulate material and filter aid materials having a depth of from about 3.0 inches to about 60 inches.

Method for treating aqueous solutions

A method for removing impurities from a liquid utilizing a filter bed having polyester fibers which have been treated with a hot caustic solution to increase the hydrophilicity of the polyester fibers. The caustic solution preferably contains a surfactant to increase the initial wetting of the polyester fibers.

Purification of liquids with treated polyester fibers

A layer of precoat filter aid material including powdered activated carbon removes oxygen and impurities from a liquid having hydrazine added thereto. Oxygen concentrations may be reduced to parts per billion concentrations. Suspended solids can be removed by the precoat layer, and if the precoat layer includes an active particulate material, either as a component of the precoat layer or as an underlayer, the concentration of impurities and dissolved solids in the liquid can also be reduced.

Deoxygenation and purification of liquids

A process and apparatus for recovering uranium from a carbonate solution containing uranium ions whereby the carbonate solution containing uranium ions is brought in contact with a cation exchanger so that a uranium cation is removed from solution and adsorbed by the cation exchanger, and the uranium cation is then removed from the cation exchanger. The treated carbonate solution from which uranium ions hve been removed by cation exchange is then further processed by removing carbon dioxide from the treated carbonate solution to produce a decarbonated solution, and passing the decarbonated solution through a membrane process to remove some remaining impurities.

Uranium recovery from carbonate leach liquors using carboxylic acid

A method for treating a sugar syrup to neutralize, decolorize and decalcify the sugar syrup during the clarification and decolorization process of sugar refining comprises contacting a sugar syrup with a neutralizing precoat filter layer disposed on a porous support means. The precoat filter layer comprises a liquid slurry constituted by an aqueous suspension of fibrous filter aid material and a neutralizing amount of particulate, crystalline alumino-siliate molecular sieve having an average particle size of less than 10 microns.

Precoat filter and method for neutralizing sugar syrups

A method for treating aqueous solutions by ion exchange uses a weakly acidic cation exchange resin to remove ammonia and other volatile amines along with corrosion products and metal ion leakage from a solution while substantially reducing the quantity of acid required to regenerate the cation exchange resin. The solution can be passed through a conventional mixed bed comprising a strongly acidic cation exchange resin and a strongly basic anion exchange resin after the pretreatment.

Method for pretreating aqueous solutions with weakly acidic cation

The present invention relates to a method for purifying aqueous solutions or condensate in a three component resin system comprising a mixed bed of a strongly basic anion exchange resin, a strongly acidic cation exchange resin and a weakly acidic cation exchange resin. According to the present method, aqueous solutions can be treated to remove metal ions and corrosion products along with ammonia and other volatile amines so that metal ion leakage is substantially reduced and the run length of the resin system is increased. A method for separating and isolating the resins of the three component system is also described.

Growing community of inventors

Yardley, PA, United States of America

Robert Kunin