24results about "Peroxyhydrates/peroxyacids" patented technology

The invention discloses an ammonium sulfate waste liquid resourceful treatment method and system, and relates to the technical field of wastewater treatment. The method comprises the following steps: carrying out microporous filtration treatment on the ammonium sulfate waste liquid to obtain filtered concentrated water and filtered produced water; performing ionization synchronous adsorption treatment on the filtered water to obtain an ammonium sulfate solution A; carrying out deacidification treatment on the ammonium sulfate solution A to obtain an ammonium sulfate solution B and sulfuric acid; when the COD in the ammonium sulfate solution B is less than 20mg / L, performing bipolar membrane electrodialysis treatment on the ammonium sulfate solution B, and recovering to obtain sulfuric acid and ammonia water; when the COD in the ammonium sulfate solution B is greater than or equal to 20mg / L, sequentially carrying out electrochemical activation treatment and bipolar membrane electrodialysis treatment on the ammonium sulfate solution B, and recovering to obtain ammonium persulfate, sulfuric acid and ammonia water. According to the method, high-quality byproducts such as sulfuric acid, ammonia water and ammonium persulfate salt can be obtained, meanwhile, produced water is recycled, resource utilization of the ammonium sulfate waste liquid is achieved, the environmental protection problem is solved, and the treatment cost of the ammonium sulfate waste liquid is reduced.

The invention relates to a method and a system for producing an oxidant solution, comprising an electrochemical cell having an anode and a cathode, the method comprising the steps of: (i) supplying a raw electrolyte to a reaction region between the anode and the cathode, the raw electrolyte consisting of sulfate ions (SO42-) and ferrous ions (Fe2 +); (ii) during a run cycle, electrolyzing the feedstock electrolyte to produce an oxidized acid solution comprising peroxydisulfate (S2O8 < 2->) and iron ions (Fe < 3 + >); and (iii) supplying the oxidized acid solution. The oxidant solution is preferably used to leach metals from wastes including electronic wastes and metal-containing ores.

The utility model relates to the technical field of material screening machine devices, in particular to a potassium hydrogen persulfate compound powder material screening machine which comprises a screening shell, an overheating box is arranged at the lower end of the screening shell, an external opening is formed in one side of the overheating box, meanwhile, a cover opening plate is arranged at the right end of the screening shell, and a handle is arranged on the outer surface of the cover opening plate. A fixed end is arranged on the left surface of the screening shell, meanwhile, a driving motor is arranged at the fixed end, an inclined plate is arranged in the lower end overheating box, an additional heating frame is attached to the lower end of the inclined plate, meanwhile, a heating pipe is arranged in the heating frame, and the front end of the heating frame is connected to the driving motor through a connecting pipeline; the device has the advantages that the rolling device arranged at the upper end of the device enables a large number of impurities in the composite salt to be left, subsequent further treatment is facilitated, in addition, the overheating plate arranged at the bottom of the device carries out high-temperature treatment on the composite salt falling to the overheating plate, finally recovery operation can be carried out through an external opening, and high-content composite powder can be further obtained.

The present invention relates to a method and system for producing an oxidant solution, comprising an electrochemical cell having an anode and a cathode. The method includes the steps of: (i) supplying a feed electrolyte to a reaction zone between the anode and the cathode, wherein the feed electrolyte contains sulfate ions (SO4 2- ) and divalent iron ions (Fe 2+ ) and (ii) in the operation cycle, the raw electrolyte is electrolyzed to produce peroxodisulfate (SO) 2- ) and trivalent iron ions (Fe 3+ and (iii) providing the oxidizing acid solution. The oxidizer solution is preferably used to leach metals from waste materials, including e-waste, and metal-bearing ores.

To provide a non-combustible persulfate particle composition having particle surfaces coated with a non-combustible material, and a production method of the same.SOLUTION: A persulfate powder composition according to the present invention is a persulfate particle composition having particle surfaces coated with a non-combustible material, characterized in that the non-combustible material is contained in an amount of 1.55 wt.% to 2.00 wt.% based on a weight of the persulfate particle composition. This makes it possible to provide a non-combustible persulfate particle composition that does not correspond to Class 1 dangerous goods (oxidizing solid) under the Japanese Fire Service Act.SELECTED DRAWING: None

The photochemical synthesis method for preparing the solid hydrogen peroxide compound comprises the following steps: (1) loading a benzyl compound and a salt, an acid or urea into a reactor and introducing oxygen or air to form a reaction system, irradiating the reaction system with a light source containing ultraviolet light, controlling the reaction temperature to be between room temperature and 60 DEG C, and allowing the reaction to proceed for at least 10 minutes; and (2) crystallizing, separating and drying the liquid system containing the hydrogen peroxide compound to obtain the solid hydrogen peroxide compound. The present application provides a new technical solution for preparing the solid hydrogen peroxide compound. The method is simple and safe, and overcomes the defects of the reaction mechanism of the photocatalyst system.

The present invention provides a decomposing agent aqueous solution for disinfecting and sterilizing microorganisms, which contains a peroxodisulfate compound as an oxidizing agent and has a pH in the range of 1 to 2 at a temperature of 20°C to 70°C. As a result, it becomes possible to provide a decomposing agent aqueous solution for infectious and non-infectious microorganisms, a disinfection and sterilization treatment method using the same, and a disinfection and sterilization treatment system, which enable not only disinfection but also sterilization of bacterial spores having the highest resistance to sterilization, safely, efficiently, and at low cost, by using a highly versatile oxidizing agent.

The present invention relates to an agent for initiating a free radical addition reaction, comprising or consisting of a persulfate and one or more transition metals in elemental or oxidized form, and to a process for the preparation of a compound of formula (I) by a free radical addition reaction in the presence of such an agent; wherein X is selected from S, Se and O. # imgabs0 #

The utility model discloses a potassium hydrogen persulfate production concentration kettle with an efficient evaporation coil in the technical field of concentration kettles, which comprises a concentration kettle main body, a top cover is assembled at the top end of the concentration kettle main body, and a rotating hole is formed in the center of the top cover; a rotating shaft is assembled in the rotating hole, a stirring body is mounted at the lower end of the rotating shaft, and the stirring body is arranged in the concentration kettle; a mounting cavity is formed in the stirring body, and an evaporation coil pipe is assembled in the mounting cavity; a sealing plate is embedded in the front end of the mounting cavity, fixing clamping plates are mounted on the outer walls of the two sides of the sealing plate, fixing clamping grooves are formed in the positions, located at the two ends of the mounting cavity, of the side wall of the stirring body, the fixing clamping plates are mounted in the fixing clamping grooves, and the fixing clamping plates and the fixing clamping grooves are clamped through clamping structures; according to the potassium hydrogen persulfate production concentration kettle with the efficient evaporation coil, the evaporation coil is arranged in the stirring body, so that overflowing potassium hydrogen persulfate in the concentration kettle is produced, the overall working efficiency is improved, and the operation of the concentration kettle is facilitated.

Disclosed herein are compositions, systems, kits, and methods for photobleaching, and selective photobleaching, a biological sample.

The invention relates to a method and system for generation of an oxidant solution including an electrochemical cell having an anode and a cathode, the method comprising the steps of; (i) supplying a feedstock electrolyte to a reaction area between the anode and cathode, the feedstock electrolyte consisting of sulphate ions (SO4 2-) and ferrous ions (Fe2+); (ii) in an operational cycle, electrolysing the feedstock electrolyte to produce an oxidised acid solution comprising peroxydisulphate (S2O8 2-) and ferric ions (Fe3+); and (iii) supplying said oxidised acid solution. The oxidant solution is preferably used for leaching metals from waste, including e-waste and metal containing ores.

This invention provides a method for preparing high bulk density potassium peroxymonosulfate composite salt. Through multi-dimensional process optimization including multi-point feeding and neutralization, ultrasonic action, crystal guiding agent, heating-heating-heating-cooling, and drying-mixing-sieving, the bulk density of PMS is synergistically improved, and the overall performance of the final product is superior to that of the prior art.

A method for removing organic pollutants from water bodies by activating persulfate with nutrient-enhanced soybean sprout-based biochar involves a method for removing organic pollutants from water bodies by activating persulfate with biochar. The invention is intended to solve the technical problems that existing biochar materials show poor catalytic activity when used for activating persulfate and requires the addition of a large amount of modifiers, which easily leads to secondary pollution to the environment, and the existing biochar materials are susceptible to interference from halogen ions, oxoanions, and natural organic matters in a persulfate system. The raw material of a catalyst used in the invention is soybean, and has an activation process mainly based on non-radical activation, exhibiting high reaction rate and saving persulfate. With the addition of 0.2 g / L catalyst and 0.5 mM potassium persulfate, the degradation efficiency against 10 mg / L phenol can reach 100% within 10 min.

A method for delignification of plant material, the method comprising providing the plant material containing cellulose fibers and lignin, and exposing the plant material to a composition comprising an alkyl sulfonic acid and a peroxide, wherein the alkyl sulfonic acid and peroxide are present in a molar ratio ranging from 1:1 to 15:1, and the exposure time is sufficient to remove substantially all of the lignin present on the plant material. Also disclosed are compositions capable of achieving delignification.

To make it possible to produce ammonium persulfate with high current efficiency even in a low concentration region of ammonium sulfate in which the current efficiency significantly decreases in the electrolytic reaction of the ammonium sulfate.SOLUTION: A production method for ammonium persulfate is performed by electrolyzing ammonium sulfate in a state in which calcium ions exist in an anolyte.SELECTED DRAWING: None

The invention relates to the field of cold and heat exchange devices, in particular to a sodium persulfate mother liquor evaporation cold and heat exchange device capable of reducing energy consumption, which comprises a sealed reaction kettle, a heating device arranged on the side wall of the sealed reaction kettle, a cooling device arranged in the sealed reaction kettle and a vacuum pump arranged on the sealed reaction kettle, the heating device is arranged on the inner side wall of the sealed reaction kettle in a surrounding mode and used for heating and evaporating liquid in the sealed reaction kettle, the vacuum pump is communicated with the interior and the exterior of the sealed reaction kettle and used for reducing and maintaining pressure in the sealed reaction kettle, a liquid inlet and a liquid outlet are formed in the sealed reaction kettle, and the liquid inlet and the liquid outlet are communicated with the vacuum pump. The technical problems that when an existing cold and heat exchange device heats and evaporates chemical products, especially a sodium persulfate solution, energy consumption is too large, and meanwhile cold and heat switching of sodium persulfate is not uniform are solved.

The application belongs to the field of water treatment, and particularly relates to a method for efficiently recovering persulfate from sewage and waste water by using resin. The method for efficiently recovering persulfate from sewage and waste water by using resin is characterized in that it comprises the following steps: S1, adding an acidic solution or an alkaline solution to sewage and waste water containing persulfate to adjust the pH of the sewage and waste water to 3-9; S2, after the pH adjustment is completed, adding resin to the sewage and waste water containing persulfate to adsorb the persulfate in the sewage and waste water; the adsorption capacity of the resin for adsorbing the persulfate is 60-100 mg / g. The application uses resin to adsorb the oxidant persulfate in sewage and waste water, has a relatively wide pH range, is less disturbed by temperature and water body matrix, and is suitable for recovering persulfate from various types of sewage and waste water.

The present invention relates to an initiator of a radical addition reaction, which comprises or consists of a persulfate and one or more transition metals, the transition metals being in elemental or oxide form. The present invention also relates to a method for preparing a compound of formula (I), where X is selected from S, Se, and O, which is used in a radical addition reaction in the presence of this reagent. [Formula I] TIFF2022518201000010.tif27170

An agent for initiating a radical addition reaction includes a persulfate and one or more transition metals, in elemental form or in an oxidized form, as well as a method for preparing a compound of formula (I)in whichX is selected from S, Se and O;by a radical addition reaction in the presence of such an agent.

The utility model discloses sodium persulfate iron removal equipment which comprises a treatment barrel, a controller is arranged on the front side of the treatment barrel, the controller is fixedly connected with the treatment barrel, a protection box is fixedly connected to the inner side of the treatment barrel, a motor is fixedly connected to the center of the bottom of the treatment barrel, and a main shaft of the motor penetrates through the treatment barrel. A main shaft of the motor penetrates through the protection box, the main shaft of the motor is fixedly connected with a first bevel gear, the first bevel gear is rotationally connected with the protection box, meanwhile, the first bevel gear drives a second rotating rod to rotate, and the rotating direction of the first rotating rod is opposite to that of the second rotating rod; the first rotating rod and the second rotating rod respectively drive the first stirring rods to rotate, and the rotating direction of the upper first stirring rod is opposite to the rotating direction of the lower first stirring rod, so that the first stirring rods can rotate and stir along different directions in the use process, the stirring effect is good, and the use is not influenced.

Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibers and lignin; exposing said plant material requiring to a composition comprising: alkanesulfonic acid; and a peroxide, wherein said alkylsulfonic acid and peroxide are present in a molar ratio ranging 1:1 to 15:1 and the time of exposure is sufficient to remove substantially all of the lignin present on said plant material. Compositions capable of achieving delignification are also disclosed.

The utility model discloses a potassium peroxodisulfate purification device, which belongs to the technical field of potassium peroxodisulfate purification and is characterized in that a primary filtering tank body, a hot filtering tank body and a filtering and air drying tank body are respectively communicated; the auxiliary processing mechanism comprises a stirring assembly and a solid-liquid separation assembly, the stirring assembly is installed on the inner tops of the preliminary filtering tank body, the hot filtering tank body and the filtering and air drying tank body in a transmission mode, and the solid-liquid separation assembly is installed on the preliminary filtering tank body in a communicating mode; one side of the hot filtering tank body and one side of the filtering air-drying tank body are respectively communicated with a filtering assembly, and the preliminary filtering tank body, the hot filtering tank body and the filtering air-drying tank body are arranged and are communicated in sequence, so that a series of purification processes such as soaking stirring, high-temperature stirring dissolving, hot filtering, cooling cleaning, low-temperature filtering, drying and the like are carried out in order; impurities in potassium persulfate can be effectively removed, and the product purity is improved.

Disclosed herein are compositions, systems, kits, and methods for photobleaching, and selective photobleaching, a biological sample.