947 results about "Hypochlorite" patented technology

A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and C1 positions but predominating at the C1 position.

A system and process for de-halogenating ballast water before releasing the ballast water from the vessel. In one embodiment, the system comprises a means for measuring the halogen content of the ballast water, a reducing agent source in fluid communication with the ballast water, and a means for controlling the amount of reducing agent supplied to the ballast water. In one aspect, the means for measuring the halogen content comprises one or more oxidation/reduction potential analyzers. In another embodiment, the system comprises one or more hypochlorite electrolytic cells for generating hypochlorite to treat the ballast water.

One embodiment of the process for de-halogenating ballast water comprises measuring the oxidation/reduction potential of the ballast water and adding one or more reducing agents to the ballast water to de-halogenate the ballast water in response to the measured oxidation/reduction potential. In one aspect, the oxidation/reduction potential is modulated so that excess reducing agent is present in the ballast water.

An incentive-based grocery cart washing and disinfecting system including a consumer special-offer coupon applying apparatus, for use in a batch or continuous process comprising a housing having at least one pipe manifold with nozzles positioned therein to provide at least one treatment zone selected from pre-wash, wash, disinfecting, and rinse zones. In addition, blown air water-stripping/drying zones may be provided, with a heating source to assist drying. Following drying, a strip of specially adapted grocery coupons is optionally applied to the grocery cart handle, so that the coupons can be redeemed by customers during their subsequent shopping. The housing is generally a linear tunnel permitting access of soiled carts at one end and removal of the clean, disinfected carts at the other end. A cart pusher system may be employed to transport the carts through the tunnel either singly or in nested groups. A convenient antimicrobial disinfecting solution is a water solution of hypochlorite. A single zone system is disclosed in which in a selected, optionally preprogrammed, sequence of application of pre-wash, wash, rinse, and disinfecting fluids are delivered to selected surfaces of the cart, followed by blown air, preferably heated, for stripping/drying,. The coupon strip comprises a leader portion and a coupon portion, and the leader can be wrapped and fixed around the grocery cart handle manually or by means of the automated machinery described. The system of the invention may be a fixed or mobile system, with the use preferably being on site at stores.

A threshold agent composition and methods of using the same to produce hypochlorite and other effluent streams from an electrochemical cell without the detrimental effects of hard water scaling are disclosed. The invention further discloses use of chemistries to prevent hard water scale formation in various electrochemical cells to enhance cell longevity without decreasing chlorine, hypochlorite or other effluent production.

The invention discloses a method for selectively recycling lithium from lithium iron phosphate waste through a direct oxidization method. The method is characterized by comprising the steps that the lithium iron phosphate waste is added into a water solution, meanwhile, an oxidizing agent is added, stirring is carried out, lithium iron phosphate and the oxidizing agent react to generate iron phosphate, lithium ions enter the solution, and therefore a pure lithium-containing solution and iron phosphate solids are obtained. The adopted oxidizing agent comprises one or a mixture of persulfate, ozone, oxygen, pypocholoride and hydrogen peroxide. The molar weight of the oxidizing agent is 0.6-20 times that of lithium iron phosphate. The lithium-containing solution can be directly used for preparing a high-purity lithium product. According to the method, efficient and selective leaching of lithium can be achieved simply by adding a certain amount of oxidizing agent, and the method is mild in reaction condition, short in process and simple in equipment.

The invention relates to a set of electrocatalytic strong oxidizer materials, comprising a nano-function anode material which compounds nano oxide particles and catalyzes metal nano particles on a titanium substrate, and a nano-function cathode material which takes titanium or stainless steel as a substrate and introduces transition metal nano-particles on the surface thereof. By the electro-catalytic advanced oxidation technology, under the catalytic action of electrocatalytic strong oxidizer materials, water body can generate a hydroxyl radical with strong oxidizing performance and an oxygen radical; and if a chloride ion exists in water, hypochlorite can be generated. Under the joint action of a plurality of types of strong oxidizers, the algae cells in the water body and various harmful bacteria can be killed; and simultaneously the ammonia in water and the water-soluble organic matters can be degraded, so the goal of purifying water is achieved. According to the electrocatalytic advanced oxidation theory, the electrocatalytic strong oxidizer materials does not need to add any chemical agent when in application, does not have secondary pollution, and has good safety, high efficiency and low energy consumption.

The invention provides an electric complex-strengthening repairing method and device of heavy metal-organic co-contaminated soil. The method provided by the invention comprises the following steps of: filling contaminated soil into an electric repairing device, and then adding an oxidant into a cathode electrolyte and an anode electrolyte or directly spraying the oxidant on the contaminated soil, wherein the oxidant comprises hydrogen peroxide, pypocholoride and persulfate; applying a direct-current electric field on a cathode and an anode, wherein the strength of the electric field is 0.5-2 V/cm; and controlling the pH values of the cathode electrolyte and the anode electrolyte to be 3-11. By selecting the suitable for oxidant and controlling the pH value of the electrolyte, the migration of the heavy metal can be effectively increased and the removing efficiency is improved; and meanwhile, the oxidant is used for effectively degrading organic pollutants when the pollutants are migrated, thereby relieving the post-treatment and simultaneously removing the heavy metal and the organic pollutants.

The present invention relates to methods of treating subterranean formations with viscosified aqueous well treating compositions which break into thin fluids at static temperatures in the range of from about 150° F. to about 200° F. A breaker system is included in the compositions comprised of an alkali metal or ammonium persulfate breaker and a breaker activity delaying agent comprised of an alkali metal chlorite or hypochlorite.

Method for whitening teeth are provided. The methods include the steps of providing a strip of material and applying a thin layer of a tooth whitening substance having a whitening active selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, hypochlorites, and combinations thereof to a front surface of a plurality of teeth, wherein the amount of the tooth whitening substance is between about 0.05 grams and about 0.4 grams. The method further includes the steps of conforming the strip of material to the front surface of the plurality of teeth and removing the strip of material, wherein the front surface of the plurality of teeth have between a 1 and a 4 VITA LUMIN shade guide improvement in color.

Liquid, shelf-stable alkaline cleaning compositions with chlorine bleach comprising a chlorine bleach capable of forming a hypochlorite in water, a bleach stabilizer selected from the group consisting of compounds having at least one NH— or NH₂— moiety capable of reacting with the hypochlorite to form NCl—, NHCl— or NCl₂— compounds, and from about 5-50% by weight of a metal hydroxide. Compositions according to the present invention are highly alkaline preferably presenting a pH of at least about 11.5. The compositions provide sustained hypochlorite bleach functionality and long term bleach stability even in the presence of surfactants. The bleach compositions are useful in cleaning and sanitizing household, institutional, and industrial hard surfaces including clean-in-place systems and food processing equipment.

A cleaning method for a semiconductor substrate is provided. After pure water is supplied to a cleaning tank, a chlorine gas is supplied to the pure water to thereby generate chloride ions, hypochlorite ions, chlorite ions, and chlorate ions in the pure water. Then, a semiconductor substrate is immersed into the pure water containing the chloride ions, hypochlorite ions, chlorite ions, and chlorate ions. The fabrication cost of a semiconductor device and adverse effects on the earth environment can be reduced. The concentration of the dissolved chlorine gas in the pure water is preferably in the range from 0.003 to 0.3% by weight.

A method for electrolytically generating a biocide having an electron deficient carrier fluid and chlorine dioxide, including providing a carrier fluid; providing a pair of electrodes interposed by a semi-permeable membrane within a vessel for creating a first passageway and a second passageway, an anode electrode of the pair of electrodes disposed in the first passageway, cathode electrode of the pair of electrodes disposed in the second passageway; flowing the carrier fluid through the vessel; applying an electric potential to the pair of electrodes to produce an oxidative acidic fluid, a reductive alkaline fluid, and anodic gases in the container; removing the fluids and gases from the vessel; mixing a portion of the anodic gases with the reductive alkaline fluid to produce a hypochlorite solution; and mixing a chlorite brine with the hypochlorite solution, followed by the introduction of additional oxidative acidic fluid to release the biocide.

Nontoxic marine anti-fouling dope and a preparation method thereof are disclosed, belonging to technical fields of anti-fouling dope and underwater dope. The nontoxic marine anti-fouling dope contains film forming matter, nontoxic antifouling compound, dye, addition agent and water. The nontoxic antifouling compound is pre-dispersed slurry prepared by adding super-fine tourmaline powder and nano zinc oxide powder into 10 times amount of water, coating with sodium alkylbenzene sulfonate while heating and stirring. The nontoxic marine anti-fouling dope can be prepared through the steps of adding the nontoxic antifouling compound into ethanol aqueous solution, adjusting pH value to be 9-12, adding silicon ester ethanol solution to react for 2-4h, bathing in water and separating, and drying. The tourmaline of the nontoxic anti-fouling dope automatically develops an electric field on the surface of the dope in the seawater to enable the seawater to electrolyse to produce hypochlorite ions, which can prevent halobios to adhere or grow on the boat and the structure. The ion membrane is approximately 10 microns and causes no environment pollution. The nontoxic marine anti-fouling dope is mainly suitable for underwater fouling prevention.

This invention relates to packaging for dilute hypochlorite and hypochlorous acid compositions to produce stable compositions. Examples of suitable packaging containers are a bag-in-can device, a plastic aerosol container, a dual delivery container, a dual chambered device, an expandable chamber device, a precompression trigger sprayer, a mechanically pressurized device, and an ultrasonic sprayer.

A foaming hypochlorite cleaning system is described that allows for easier cleaning of all hard-to-reach surfaces from all angles, especially underneath a range hood and up underneath the rim of a toilet bowl, and which comprises an alkaline hypochlorite and anionic surfactant composition contained in and dispensable from a package comprising an angled-neck sprayer bottle fitted with an invertible trigger sprayer assembly, wherein the cleaning system may be used in an entirely upside-down orientation to spray upwards at an acute angle.

The invention discloses a recycling method for valuable metals in waste nickel-cobalt-manganese ternary lithium ion batteries. The method comprises the steps that cathode materials are dissolved by adding alkali, and separating is performed to obtain a dissolved solution I and undissolved substances; acidolysis is performed on the undissolved substances to obtain a dissolved solution II, the pH value is adjusted to be alkaline, precipitation is formed, and filtrate I and a precipitate I are obtained; acidolysis is performed on the precipitate I to obtain a dissolved solution III, ammonium hydroxide is added into the dissolved solution III for complexing, after the pH value is adjusted to be alkaline, soluble carbonate is added, and filtering is performed to obtain filtrate II and a precipitate II; soluble carbonate is added into the filtrate II, and heating is performed to obtain a precipitate III; after acidolysis is performed, the pH value is adjusted to be 3.0-3.5, pypocholoride is added to adjust the pH value to be 2.0-3.0, and filtering is performed to obtain filtrate III and a precipitate IV. Accordingly, multiple valuable metals in the waste lithium ion batteries are recycled without adopting any extraction agent and other organic solvent, and the recycling method is high in recycling efficiency, little in pollution, low in cost and suitable for industrialized popularization.