179 results about "Chloramine B" patented technology

RO membranes using chlorinated water as a feed stream maybe protected from damage by the chlorine with a protective layer including reactive nitrogen which forms chloromines on the surface of the membrane that reduce chlorine penetration. This protective layer also provides substantial anti-fouling capabilities, whether used with a chlorinated or unchlorinated feed stream because the chloramines are anti-bacterial. Although chlorine is lost in use, the anti-fouling layer or coating can be recharged with additional chlorine without damaging the discrimination layer. The anti-fouling layer or coating may be advantageously used with Thin film composite, TFC, membranes for use in forward and reverse osmosis may include nanoparticles, monohydrolyzed and/or di-hydrolyzed TMC, and/or alkaline earth alkaline metal complexes or other additives.

Methods of preparing kinase inhibiting pharmaceutical compounds having the formula (I):

or a pharmaceutically acceptable salt or solvate thereof, wherein R₁ through R₆ and Z are as described in the specification. The methods according to the invention utilize an amination process, in which a pyrrole is reacted with a haloamine, preferably chloramine. This step is followed by cyclization to form the pyrrolotriazine core.

An Anti-Terrorism water quality monitoring system for continuously monitoring a potable water treatment system and related potable water distribution network that provides potable water to a municipality, city, housing development or other potable water consumer. The system includes the collection of data from the water distribution system and from the water treatment facility and from advanced separation processes which are integrated into analytical instruments. The data collected are stored in a remote database on a remote server computer or bank of computers and accessible by Homeland Security or its designated agency. Preferred parameters of monitoring include the turbidity and disinfectant such as chlorine, hypochlorous acid, sodium hypochlorite, calcium hypochlorite, ozone, chlorine dioxide, chloramines, hydrogen peroxide, peracetic acid.

An activated carbon having a high catalytic activity as an oxidation catalyst or a decomposition catalyst, and use therefor are provided.

The activated carbon has (a) an oxygen content in a range from 1.40 to 4.30% by mass, (b) a nitrogen content in a range from 0.90 to 2.30% by mass, (c) a sulfur content in a range from 0.50 to 1.20% by mass, and (d) a hydrogen content in a range from 0.40 to 0.65% by mass. The activated carbon may have at least one characteristic of (e) an amount of an acidic surface functional group of 0.10 to 0.36 meq/g, (f) an amount of a basic surface functional group of 0.50 to 1.30 meq/g, and (g) a benzene adsorption capacity of 25 to 50%. The activated carbon catalyzes an oxidation reaction of N-(phosphonomethyl) iminodiacetic acid with a peroxide (e.g., hydrogen peroxide) and achieves an efficient production of N-(phosphonomethyl)glycine even after repetitive use. The activated carbon also efficiently decomposes a chloramine.

Integrated membrane treatment systems for treatment of an aqueous solution. In embodiments, components, such as an MBR, are integrated with means to recover energy from the system, for example from an RO concentrate, to operate the other components. In embodiments including biological treatment, RO is integrated with other components, such as an MBR with the ROs ability to remove inorganic nitrogen enabling biological treatment to be performed with only partial nitrification and the MBR operated without active pH control. In embodiments, RO is integrated with a chlorine generator to convert chlorides present in the RO concentrate for an in-situ source of oxidizing biocides for disinfection purposes. Chloramines may be generated in-situ from residual ammonia and chlorides in the RO reject. In embodiments, carrier media is employed in a membrane tank to enhance removal of residual organics by the MBR and to also improve effectiveness of membrane scouring.

The invention discloses a method for removing nitrogenous disinfection byproducts in water on the basis of persulfate/light combination, and relates to a method for removing nitrogenous disinfection byproducts in water. The method for removing nitrogenous disinfection byproducts in water on the basis of persulfate/light combination comprises the following steps of: dosing persulfate in water including nitrogenous disinfection byproducts and then carrying out light irradiation. In the invention, persulfate or related composite chemicals are dosed in water and ultraviolet irradiation is utilized, so that abundant radicals are generated to attack the nitrogenous disinfection byproducts so as to realize denitrification and dehalogenation. The method provided by the invention has the advantages that the operation is simple, the effect is clear, the use is sage and no toxic byproduct is generated. By using the method, various nitrogenous disinfection byproducts such as acetonitrile, halogenated nitromethane, nitrosamine compounds, halogenated cyanogens, halogenated acetamide, halogenated pyrrole and organic chloramines can be thoroughly removed; and moreover, the method can be used for synchronously removing other organic matters and restraining and killing the microorganisms in the water.

The invention discloses a highly selective novel reaction with an important application value in organic phosphorus synthesis methodology. The reaction can be applied in important pesticide commodities of acephate, glyphosate, glufosinate-ammonium, chloramine phosphorus, profenofos, and the like. With the reaction, innovative technical synthetic routes can be designed. With the reaction, standards of clean production technologies can be satisfied, and the production cost is greatly reduced compared to existing technical routes.

The invention discloses a disinfectant used in the breeding industry. The disinfectant comprises the components in percent by volume: 20-30mL of a sodium hydroxide solution with the mass percent of 30-45 percent, 3-7mL of peroxyacetic acid, 5-9mL of chloramine, 12-17mL of a sodium bicarbonate solution with the mass percent of 20-45 percent, 4-12mL of absolute ethyl alcohol and 12-19mL of a saponated cresol solution. All components are stirred for a certain time at a normal temperature and a normal pressure, and sub-packaged and plastic-packaged to obtain the disinfectant. By adopting the mode, according to the disinfectant used in the breeding industry, disclosed by the invention, the components adopted by the disinfectant are low in price, so that the total cost of the disinfectant is reduced, the disinfection effect is good, a good medication effect can be achieved by only consuming less disinfectant, the medication efficiency is high, toxic and hazardous effects on bred livestock and fishes are avoided, and no toxin accumulation is caused.

The invention is an assay for detecting inhibitors of the enzyme myeloperoxdase The assay method comprises reacting myeloperoxdase with hydrogen peroxide and a chloride source to generate hypochlorous acid in the presence of a potential inhibitor of said myeloperoxidase; reacting any formed hypochlorous acid with an amine to form the corresponding chloramino; optionally removing any unreacted hydrogen peroxide; reacting any for-med chloramine with a detector compound in the presence of iodide to form oxidized detector compound; determining the amount of formed oxidized detector compound by measuring the absorbents or fluorescence at a suitable wavelength; and identifying as inhibitors of myeloperoxidase those compounds which cause the amount of formed oxidized detector compound to be decreased The assay is useful in diagnostic tests for myeloperoxidase activity.

This application discloses a method for enhanced removal of chloramines from a fluid media by contacting said media with a catalytic activated carbon. The catalytic activated carbons used in the present invention may be prepared from carbon materials that have been contacted or otherwise exposed to nitrogen-containing compounds at temperatures above 700° C., and preferably are in the form of a solid carbon block.

The present invention provides a reactor for the gas-phase reaction of commercially available gases in the presence of an inert carrier gas to form product gas. The reactor has a streamlined, compact configuration and at least one solids collection and removal system downstream of the reactor, where solids are efficiently removed from the product gas stream, leaving high purity product gas. The removal system allows for a simple reactor design, which is easy to clean and operates continuously over longer periods of time.

Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.

The invention discloses a method for disinfecting filtered water from a water plant with cooperation between medium-pressure ultraviolet catalyzing peroxymonosulfate and chloramines. The method includes following steps: adding peroxymonosulfate to outlet water from a water plant filtering tank to obtain a mixed solution with a concentration being 0.2-0.4 mmol/L through a tubular mixer; performing disinfection to the mixed solution in a medium-pressure ultraviolet disinfecting reactor, wherein an addition dosage of the medium-pressure ultraviolet is 10-20 mj/cm<2> and a disinfection time in the reactor is 5-10 min; and adding 0.3-0.4 mg/L chloramines to an end of the ultraviolet disinfecting reactor to complete the disinfection with cooperation between medium-pressure ultraviolet catalyzing peroxymonosulfate and chloramines. By means of the method, a cooperative effect of medium-pressure ultraviolet, peroxymonosulfate and chloramines fully works so that bacteria and microorganisms can be controlled in high efficiency and a reagent addition dosage and disinfection by-product can be reduced. Sustainability of disinfection and sterilization of water in a following water supply network can be ensured and drinking water safety can be ensured.

A shower filter apparatus to neutralize chlorine and chloramines from water using water soluble vitamin c in the forms of ascorbic acid and sodium ascorbate, vitamin e in the form of tocopheryl acetate to prevent the oxidation of vitamin c, a cylindrical threaded replaceable sealed cartridge system with carefully sized media feed apertures to control delivery of said vitamin solution, a gasketed flow control device that creates a positive water tight seal over the media feed apertures when the device is not in use, a transparent observation window within the media cartridge.

A method of automatically controlling chloramine concentration in a body of water contained in a reservoir includes: (a) determining residual chloramine concentration in a first water sample obtained from the body of water; (b) automatically engaging a supply of chlorine to add chlorine to the body of water when the residual chloramine concentration in the first water sample is determined to be below a residual chloramine concentration set-point or a first chloramine concentration percentage; (c) determining residual chloramine concentration in a second water sample obtained from the body of water after step (b); and (d) automatically engaging a supply of ammonia and the supply of chlorine to add both ammonia and chlorine to the body of water if the residual chloramine concentration in the second water sample is determined to be below the residual chloramine concentration in the first water sample or a second chloramine concentration percentage.

The invention discloses a preparation method of a catalyst for synthesizing diphenyl carbonate, and belongs to the technical field of catalyst synthesis. The catalyst is obtained by modifying a transition metal oxide by poly-electrolyte until the transition metal oxide is positively or negatively charged, and wrapping a layer of metal organic framework (MOFs) on the outer surface of the transition metal oxide by an electrostatic layer-by-layer self-assembling method, namely the oxide is used as a core, and the MOFs is used as a shell; the catalyst is MalphaObeta@MOFs fort short (M is one of transition metal elements, and alpha and beta are valences). The catalyst is enabled to react with ammonia chloride with a certain concentration to convert the core MalphaObeta into corresponding chloramine salt M(NH3)nClbeta (n is the number of ammonia molecules and is equal to 1 to 8); after ammonia is removed by low-temperature roasting, the catalyst MClbeta@MOFs is obtained. The catalyst can be used in a system for generating diphenyl carbonate by transesterification between urea or carbamic acid ester and phenol; new coordination adsorption is performed on the catalyst and ammonia generated by the reaction system to push the reaction to move rightwards; the yield of a diphenyl carbonate product is up to 90 percent or above; after the catalyst is used for 5 times, the catalysis effect is still good.

Sorbent materials are described that have enhanced performance in removing chlorine and chloramine, among other toxic compounds. The sorbent materials are formed by a process which includes steps of oxidation, adding a nitrogen-containing compound, and calcining the sorbent. The processes of forming the sorbent materials are also disclosed. The sorbent materials have excellent performance as measured by a chloramine and/or chlorine destruction number, and the sorbents retain a high nitrogen edge concentration. The sorbent materials may also be incorporated into devices such as filter assemblies.

The invention relates to a polypropylene material and provides a modified polypropylene material, and a preparation method and application thereof, and the modified polypropylene material can withstand chloramine corrosion test and has a high bonding force with a coating. The modified polypropylene material comprises 50 to 75% of polypropylene, 3 to 5% of a compatilizer, 5 to 20% of polystyrene, 10 to 35% of inorganic mineral powder, 0.3 to 1% of a lubricant and 0.5 to 1% of a coupling agent. Granules of the modified polypropylene material are obtained by mixing, stirring and drying the inorganic mineral powder, sprinkling the coupling agent onto the inorganic mineral powder, carrying out stirring, then adding the lubricant, continuing stirring, adding polypropylene, polystyrene and the compatilizer, resuming stirring to obtain a mixed raw material, placing the mixed raw material into a twin-screw extrusion granulator, carrying out melt extrusion to form wires and carrying out cooling and grain cutting.

A water chloramination control system compares the concentration of aqueous higher chloramines to aqueous ammonia to optimize the ratio of added ammonia to chlorine. Aqueous ammonia concentration is measured by conversion to monochloramine which concentration is determined spectroscopically. Higher chloramine concentration is measured by a reaction producing free iodine which concentration is also determined spectroscopically. The higher chloramine to ammonia ratio is used to control ammonia feed to the water. Problems associated with excess chlorine, or excess ammonia, are avoided.