149 results about "Peroxymonosulfuric acid" patented technology

The invention discloses a magnetic Co ₃ o ₄ The ‑C nanometer material and its preparation method and the application of activated persulfate as a catalyst in wastewater treatment belong to the technical field of water pollution control. In this method, cobalt metal-organic framework compounds are used as precursors, which are calcined at high temperature in a certain atmosphere, and finally magnetic Co ₃ o ₄ ‑C nanomaterials. The porous carbon component in this material not only acts as a carrier of metal oxides to evenly distribute the catalytic sites, but also effectively enriches pollutants in water to improve the degradation efficiency of the system; the magnetic Co in this material ₃ o ₄ The components can be used as heterogeneous catalysts to efficiently activate monopersulfate to generate free radicals to degrade pollutants in water bodies. The method has the characteristics of high efficiency and convenience, wide application range of pH, catalyst recovery by external magnetic field, good recyclability, and environmental friendliness, and has great potential in the actual treatment and application of organic wastewater.

The invention relates to a method for producing sulfate radical free radicals to oxidize pollutants through in-situ electrocatalysis. The method comprises the steps: sulfate in wastewater is activatedin situ by an anode material with high oxygen evolution potential to generate persulfate radicals, the generated persulfate radicals are catalyzed into sulfate radical free radicals at a cathode material with electrocatalytic activity, pollutants in the wastewater are oxidized by the sulfate radical free radicals and the sulfate radical free radicals are converted into sulfate at the same time, the sulfate are activated at the anode material again, and the processes are repeated. Compared with the prior art, the method has the advantages that sulfate ions in the water body are used for generating the sulfate radical free radicals in situ to oxidize and remove the pollutants, oxidants (such as peroxymonosulfate and peroxydisulfate) do not need to be added, and the salt concentration of thewater body cannot be increased; the water pollution control technology is high in removal efficiency and small in secondary pollution, and has the characteristic of easiness in automation.

The invention provides an iron-nitrogen-carbon composite material containing monatomic active sites, which comprises a carrier containing graphite-like carbon nitride and iron monatomic combined with the carrier, so that the catalytic activity to peroxymonosulfate is improved, and a large amount of metal ions are prevented from being dissolved out. The preparation method comprises the following steps: S1, dissolving a nitrogen-containing carbon source in an ethanol solution to obtain a solution A; wherein the nitrogen-containing carbon source is prepared from one or more of melamine, dicyandiamide and urea; S2, dispersing an iron-containing metal precursor in the solution A, and then performing evaporation to dryness treatment to obtain a mixed substance B; wherein the iron-containing metal precursor comprises one or two of chlorhematin and iron phthalocyanine; and S3, sequentially performing grinding and mixing treatment, pyrolysis treatment and cooling treatment on the mixed substance B, sequentially performing acid pickling treatment, water washing treatment and drying treatment on a substance obtained after cooling treatment, and obtaining the iron-nitrogen-carbon composite material.

The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80° C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.

The invention discloses a paper starch adhesive and a preparation method thereof. The paper starch adhesive comprises the following components in part by weight: 100 parts of starch, 300 to 600 parts of water, 0.1 to 0.3 part of potassium hydrogen peroxymonosulfate, 5 to 10 parts of caustic soda, 1 to 5 parts of epoxy chloropropane, 0.5 to 1.5 parts of boric acid, 1 to 3 parts of sodium sulfite, 4 to 8 parts of light calcium carbonate and 2.5 to 5 parts of bridging agent. The preparation method comprises the following steps of: adding water into a reaction kettle, heating the water to 38 DEG C, adding the starch into the water, stirring the solution, adding potassium hydrogen peroxymonosulfate solution into the reaction kettle, and reacting the mixed solution for 20 minutes with stirring; diluting the caustic soda, then slowly adding the caustic soda into the reaction kettle twice, stirring the solution for about 20 minutes to form milk white or light yellow transparent colloid, then adding the boric acid, the bridging agent and the light calcium carbonate into the colloid, and stirring the mixture uniformly; and adding the epoxy chloropropane, sodium aliphatate and the sodium sulfite into the reaction kettle with stirring, and stirring the mixture uniformly to obtain the paper starch adhesive. The adhesive has the characteristics of stable viscosity, good adhesiveness, low comprehensive cost, good permeability and the like.

The invention relates to a processing method of a hardly degraded organic substance, which is characterized in that common anions in waste water are used as catalyst for activating peroxy-monosulfate to process hardly degraded organic waste water. The processing method comprises the following steps of: firstly detecting the concentration of the anions in the waste water and the concentration of the organic substance in the waste water; when the concentration of the anions is within a specified range, adding the peroxy-monosulfate into the waste water according to the concentration of the organic substance in the waste water, and stirring; and after the waste water meets the discharge requirement, discharging the waste water. The processing method has the advantages that the processing method is carried out at normal temperature and under normal pressure, and the reaction condition is mild; the process is simple, energy and the catalyst do not need to be added, equipment does not need to be added, and the investment is little; an environment-friendly medicine is added, and secondary pollution does not occur; no sludge is generated; the processing time is short, and the processing effect is good.

The invention discloses a method for treating organic wastewater by activating peroxymonosulfate with a functionalized zirconium-based metal organic framework/protonated carbon nitride composite material. According to the invention, the functionalized zirconium-based metal organic framework/protonated carbon nitride composite material is adopted to activate peroxymonosulfate to treat organic wastewater; and the functionalized zirconium-based metal organic framework/protonated carbon nitride composite material takes protonated carbon nitride as a carrier and is doped with UiO-66-NH2. The methodof the invention realizes efficient treatment of organic wastewater by activating peroxymonosulfate with the functionalized zirconium-based metal organic framework/protonated carbon nitride compositematerial, has the advantages of simple process, convenient operation, low cost, wide application range, high treatment effect, good treatment effect and the like, and has very high use value and goodapplication prospects.

The invention discloses a method for degrading atrazine in a water body through activating peroxymonosulfate by using potassium ferrate. The invention relates to the water treatment method and solvesthe problem of low activation efficiency of single peroxymonosulfate. The method comprises the following steps that a ferrate and a peroxymonosulfate are added in a polluted water body, sulfate free radicals and hydroxyl free radicals with a strong oxidizing property are generated with the utilization of mutual interaction of the ferrate and the peroxymonosulfate, and refractory organic pollutantsof organic wastewater are further oxidized, so that the purpose of degrading organic pollutants is achieved. The method provided by the invention has efficient and quick operation and simple operation at normal temperature; the leaching rate of iron ions in a using process is very low; secondary pollution is reduced; and the method is adapted to extensive pH conditions, and has a wide applicationprospect in the purification of organic polluted water bodies.

A medicinal drug is administered to a person for treating a medical condition of the person or/and for preventing the person from contracting the medical condition. The medical condition can be a bacterial infection, a eukaryotic infection, a prion-caused infection, a non-pathogenic inflammation, and, insofar as not covered by any of these four types of the medical condition, a fungal infection, a spore-caused infection, and a parasitic infection. A medicinal drug is similarly administered non-topically to a person for treating a virus-caused medical condition of the person or/and for preventing the person from contracting the virus-caused medical condition. The medicinal drug is typically formed at least partially with salt of peroxymonosulfuric acid, preferably potassium hydrogen peroxymonosulfate.

Methods of improving shrink-resistance of natural fibers (e.g., wool, wool fibers, animal hair, cotton), synthetic fibers (e.g., acetate, nylon, polyester, viscose rayon), or blends thereof (e.g., wool/cotton blends), or fabrics or yarns composed of natural fibers, synthetic fibers, or blends thereof, involving contacting the fibers (or fabric or yarn) with NaOH, H₂O₂, gluconic acid, dicyandiamide, and non-ionic surfactant (e.g., Triton X surfactant such as Triton X-100 and preferably Triton X-114), and optionally subsequently contacting the fibers (or fabric or yarn) with protease and non-ionic surfactant and optionally sodium sulfite and optionally triethanolamine and optionally polyacrylamide polymer. The methods do not utilize dichloroisocyanuric acid, chloroamines, peroxymonosulfuric acid, monoperoxyphthalic acid, permanganate, chlorine gas, sodium hypochlorite, or aminoplast resins.

The invention provides Co2FeAl-LDH, a preparation method thereof and a method for degrading pollutants, and the method for the Co2FeAl-LDH comprises the following steps: dissolving nitrate of cobalt,nitrate of iron, nitrate of aluminum and urea in water to obtain a uniform solution; and reacting the uniform solution for 22 to 26 hours at the temperature of between 105 and 115 DEG C to obtain theCo2FeAl-LDH nanosheet. The Co2FeAl-LDH prepared by co-precipitating the nitrate of cobalt, nitrate of iron and nitrate of aluminum by using the urea can be used as a catalyst. By means of the synergistic effect of cobalt and iron on strongly oxidative sulfate radicals which are generated by activation of peroxymonosulfate and the carrier effect of aluminum, pollutants such as sulfamethoxazole, ciprofloxacin and tetracycline in sewage are rapidly catalyzed and degraded. The process is simple. The Co2FeAl-LDH is a heterogeneous catalyst, is easy to recycle, and has the advantages of favorable stability and favorable reusability.

The invention discloses a water treatment method for removing pollution through singlet oxygen dissolved air flotation, relates to a multifunctional water treatment method with integrated separation and oxidation pollution removal, and solves the problem that organic pollutants in water are hard to remove by using a conventional air flotation process. According to the water treatment method, a peroxymonosulfate solution is added into backflow water of a dissolved air flotation process, the backflow water is fed into a pressure dissolved air tank to form pressurized dissolved air water with peroxymonosulfate, a great amount of micro bubbles with high-activity singlet oxygen due to cavatition formed through release of a releaser, solid granules and dissoluble organic pollutants in water and the micro bubbles float up due to the adhesion function, meanwhile the singlet oxygen in the micro bubbles can act on the adhered organic pollutants, and thus pollution can be removed through oxidation and separation together. The water treatment method disclosed by the invention is high in organic pollutant removal efficiency, free of toxic or harmful byproduct and low in operation cost, needs no extra equipment, and is suitable for large-scale application in the drinking water and sewage treatment process.

The invention relates to a copper-cobalt bimetal-organic framework material based on a 2, 5-dihydroxy terephthalic acid ligand as well as a preparation method and application of the copper-cobalt bimetal-organic framework material. The preparation method comprises following steps: dissolving cobalt nitrate hexahydrate, copper nitrate hexahydrate and 2, 5-dihydroxy terephthalic acid in an organic solvent to obtain a precursor solution; carrying out solvothermal reaction on the precursor solution at the temperature of 110-170 DEG C; and after the reaction is finished, performing post-treatment to obtain the copper-cobalt bimetal-organic framework material. Highly dispersed cobalt and copper active center ions in the copper-cobalt bimetal-organic framework material can enhance the effective contact between cobalt ions and copper, and a peroxymonosulfate to generate sulfate radicals with strong oxidizability, so that refractory organic pollutants in wastewater are removed. The copper-cobalt bimetal-organic framework material based on the 2, 5-dihydroxy terephthalic acid ligand is suitable for treating various organic wastewater, is high in efficiency, good in durability, convenient tooperate and environmentally friendly, and has a promising prospect in treating toxic, harmful and non-biodegradable organic wastewater.

The invention discloses a method for controlling crystallization growth of potassium peroxymonosulfate composite salt. The method comprises the following steps: (1) adding 1-hydroxyethylidene-1,1-diphosphonic acid into a hydrogen peroxide solution, and adding fuming sulfuric acid into the hydrogen peroxide solution to obtain an oxidation solution of peroxymonosulfate; (2) adding the oxidation liquid prepared in the step (1) and potassium carbonate into a neutralization kettle of water or centrifugal mother liquor, and carrying out a neutralization reaction; (3) transferring the reaction solution neutralized in the step (2) into a crystallization kettle, adding a crystal modifier and seed crystal slurry containing potassium peroxymonosulfate composite salt, stirring, cooling and crystallizing; and (4) carrying out solid-liquid separation on the cooled and crystallized material in the step (3), and drying and screening the solid to obtain the potassium peroxymonosulfate composite salt with the particle size of more than 200 meshes. The potassium peroxymonosulfate composite salt prepared by the crystallization method disclosed by the invention is relatively large in particle size andhigh in yield, and has natural moisture absorption resistance and anti-caking property, so that the stability of active oxygen of the product is higher.

The invention discloses a method for preparing peroxysulfuric acid by a sonoelectrochemical method, which is characterized in that in the method, a sulphuric acid solution is placed in an electrolyzer; pure platinum serves as an anode, and a lead board or thermal shock graphite serves as a cathode; the cathode and the anode are separated by a sulfonic group anion selecting membrane; an ultrasonic is added at the bottom of the electrolyzer; the electrolysis temperature is 0-40 DEG C, and the electrolysis voltage is kept between 3V and 7V, and the current density is 1000A/m<2>-6000A/m<2>; the frequency of the added ultrasonic is 20kHz-100kHz, the sound intensity of the ultrasonic is 5-20W/m<2>, and the electrolysis time of the ultrasonic is 1-5 hours; and sulfate radicals in the sulphuric acid solution at the anode zone is subject to an oxidation reaction to produce the peroxysulfuric acid. Compared with the conventional method for preparing peroxysulfuric acid by the high concentration synthesis method, the invention has the advantages of simple method, reduced energy consumption, shortened reaction time, higher activity of a generated oxidant and the like.

The invention discloses a preparation method of a nitrogen-sulfur double-doped biochar material for degrading phenol in water, which comprises the following steps: S1, cleaning waste fireworks with ultrapure water multiple times, and drying in a vacuum drying oven to obtain clean firework buds; s2, shredding, grinding and sieving the dried firework buds to obtain taupe firework powder, uniformly mixing the taupe firework powder with a certain amount of thiourea, and grinding by using a ball mill to obtain a mixture; and S3, calcining the mixture in a tubular furnace under the protection of inert gas, washing the calcined product with ultrapure water and ethanol, transferring the washed product into a vacuum drying oven, and drying to obtain the nitrogen-sulfur double-doped biochar material. The biochar material prepared by the method is of a porous structure, has a relatively large specific surface area, and is beneficial to adsorption of peroxymonosulfate on the surface of the material, so that target molecules are relatively easy to approach active sites to generate catalytic reaction.

Products based on salt of peroxymonosulfuric acid are suitable for treating or/and preventing diseases and other debilitating medical conditions caused by bacterial, eukaryotic, prion, and viral pathogens and by non-pathogenic inflammation. The products may alternatively be based on inorganic halide and an oxidizing agent reactable in water with the inorganic halide to generate hypohalite ions. In addition, the products can be employed in other applications such as commercial and industrial applications.

The invention discloses a binary metal oxide composite carbon nitride catalyst, a preparation method and applications thereof, wherein the metal in the binary metal oxide is cobalt and manganese. According to the invention, the catalyst constructed by the scheme can form a reaction system with peroxymonosulfate at a room temperature, can efficiently activate the peroxymonosulfate to generate sulfate radical free radicals, hydroxyl free radicals and high-valence transition metal complexes so as to effectively degrade the organic matters in wastewater, has advantages of high treatment efficiency, strong treatment capacity, strong practical application, easy operation of experimental conditions, wide application to the pH range of water quality, high stability, good reusability and excellenteconomic performance, and has good application prospect in the field of organic wastewater treatment.

The invention provides a method for cracking sludge by virtue of singlet oxygen and relates to a sludge cracking method. The method comprises the steps of adding a catalyst pyroracemic acid and antioxidants peroxides (peroxymonosulfate and percarbonate) into to-be-cracked sludge, stirring to react, pumping supernate of the cracked sludge back into an aeration tank, and carrying out treatments including dehydration and the like on the residual sludge. According to the method, a bisepoxy intermediate is generated by catalyzing peroxides by virtue of pyroracemic acid and further reacts with peroxides to generate singlet oxygen and pyroracemic acid, peroxides are continuously catalyzed by generated pyroracemic acid, and generated pyroracemic acid plays a role of circular catalysis during reaction, generated high-activity singlet oxygen is capable of damaging the structure of sludge floc and releasing bound water, improving the dehydration performance of sludge and damaging the cell structures of microorganisms. The method has the characteristics that the sludge treatment effect is good, toxic and harmful products are not generated, a required carbon source is provided for sewage treatment, and the catalyst pyroracemic acid and the antioxidants peroxides are environmentally friendly and safe and have no toxic and side effects.

The invention discloses an oxidation method for removing antibiotic resistance genes and resistant bacteria in sewage, and relates to the technical field of advanced sewage treatment. The oxidation method comprises following steps: taking sewage, adding an oxidant, and carrying out an ultraviolet irradiation treatment. A novel advanced oxidation process is adopted, UV is used for activating peroxymonosulfate/peroxydisulfate to generate sulfate free radicals (SO4.-) and hydroxyl free radicals (.OH), and ARGs and ARB are removed through free radicals with high oxidation capacity and damage of UVto bacteria. The advanced oxidation process is environmentally friendly and high in oxidation capacity, does not generate any intermediate pollutant, and has a good removal effect on ARB and ARGs.

The invention relates to an iron-cobalt bimetal-organic framework material based on a 2, 5-dihydroxy terephthalic acid ligand as well as a preparation method and application of the iron-cobalt bimetal-organic framework material. The preparation method comprises following steps: dissolving cobalt nitrate hexahydrate, ferrous chloride tetrahydrate and 2, 5-dihydroxy terephthalic acid in an organic solvent to obtain a precursor solution; carrying out solvothermal reaction on the precursor solution at the temperature of 110-170 DEG C; and after the reaction is finished, carrying out post-treatmentto obtain the iron-cobalt bimetal-organic framework material. Highly dispersed cobalt and iron active center ions in the iron-cobalt bimetal-organic framework material can enhance effective contact of cobalt ions and iron with a peroxymonosulfate to generate sulfate free radicals with strong oxidizing property, so that refractory organic pollutants in wastewater are removed. The iron-cobalt bimetal-organic framework material based on the 2, 5-dihydroxy terephthalic acid ligand is suitable for treating various organic wastewater, is high in efficiency, good in durability, convenient to operateand environmentally friendly, and possesses a wide prospect in treating toxic, harmful and non-biodegradable organic wastewater.

The invention relates to a continuous and rapid emergency treatment method of methyl mercaptan odor by employing chemical absorption and utilizing an oxidation method. The method comprises the following steps: absorbing methyl mercaptan odor under the normal temperature and normal pressure reaction conditions by utilizing alkali liquor with the pH of not less than 11, and oxidizing and removing the methyl mercaptan odor by utilizing peroxymonosulfate. The method has the advantages that the alkali liquor absorption and oxidation removal advantages are combined, and the methyl mercaptan odor which is difficult to dissolve and treat is treated in the odor; the methyl mercaptan can be fully oxidized and is difficult to transfer; the peroxymonosulfate and the methyl mercaptan reaction is fast and is instantaneously carried out, secondary pollution is avoided, and the method is suitable for performing rapid emergency removal on the methyl mercaptan odor in the accident under alkaline conditions; continuous air suction can be kept in the reaction system, and the gas is continuously recycled; the reaction conditions are mild under normal temperature and normal pressure; and the method is easy to operate and good in treatment effect.

The invention relates to preparation and application of high-activation charcoal based on heat and cobalt complex modification, and belongs to the technical field of environmental materials. The material is prepared by the following steps: calcining biomass sieved by a 160-mesh sieve in a carbon dioxide atmosphere, washing with hydrochloric acid, and drying; ultrasonically complexing cobalt acetate and 1,10-phenanthroline in an ethanol solvent, adding charcoal, stirring and evaporating to obtain a compound, and drying the compound in a drying oven; grinding the dried solid into powder, calcining for 2 hours at the temperature of 600 DEG C in an argon atmosphere, and introducing inert gas for storage, so as to obtain the heat and cobalt complex modified high-activation charcoal. The material activates peroxymonosulfate at a low dosage, so that the antibiotic sulfamethoxazole can be completely degraded in a short time, and the material shows high activation in a wide pH range, different salt concentrations and water bodies. The preparation method of the novel material is simple, the raw materials are cheap and easy to obtain, and the novel material is suitable for industrial preparation, has high activation on peroxymonosulfate, and has a wide application prospect in actual organic wastewater treatment.