109results about How to "Promote oxidative degradation" patented technology

The invention discloses a preparation method of a Ce-doped Fe-MOF ozone catalyst. The Ce-doped Fe-MOF ozone catalyst is formed by cerium ion-doped Fe-MOFs through hydrothermal or solvothermal self-assembling, wherein Fe-MOF is an iron-based metal organic framework material. According to the invention, Lewis acid site density of the surface of the Fe-MOF ozone catalyst is effectively adjusted by utilizing hetero-metal Ce, so the catalytic ozonation activity of the Fe-MOF is improved, the ozone adsorption and catalytic decomposition rate of a Fe-MOF catalytic material is promoted, more active oxygen species such as hydroxyl radicals are further generated, oxidative degradation of organic pollutants in water is enhanced, and the mineralization degree of the organic pollutants is remarkably improved.

The invention relates to a medical polyvinyl chloride (PVC) material for gamma-ray irradiation disinfection and a preparation method thereof. The medical PVC material comprises 100 parts of PVC resin, 40 to 70 parts of a plasticizer dioctyl phthalate (DOP), 1.0 to 1.5 parts of a calcium/zinc heat stabilizer, 5 to 8 parts of an auxiliary heat stabilizer, 0.3 to 0.5 parts of a yellowing inhibitor, 0.1 to 0.5 parts of an anti-oxidant and 0.5 to 0.8 parts of a lubricant, wherein the PVC resin is a suspension PVC resin having a polymerization degree of 2500 to 3000; the calcium/zinc heat stabilizer is a complex composed of 50 to 60% of ricinic acid calcium, 10 to 15% of zinc octanoate, 10 to 15% of zine stearate and 10 to 25% of sorbierite; the auxiliary heat stabilizer is epoxidized linseed oil; the lubricant is composed of 40 to 60% of stearic acid and 40 to 60% of polyethylene wax; the yellowing inhibitor is octadecyl-dibenzoylmethane; and the anti-oxidant is an anti-oxidant 1076 produced by the Ciba specialty chemicals Ltd. The medical PVC material solves the problems that after being subjected to irradiation disinfection, the existing PVC material yellows because of degradation breaking of PVC macromolecules; mechanical properties are reduced; and ageing is accelerated. The preparation method of the medical PVC material can obviously improve a PVC material anti-irradiation capability.

The invention provides a preparation method, a product and application of a ferrous doped Fe-MOFs Fenton-like catalyst. The preparation method comprises the following steps: dissolving an organic ligand in a solvent to obtain an organic ligand solution; adding a mixed metal salt of a ferric salt and a ferrous salt into the organic ligand solution, and conducting uniform stirring to obtain a ferrous doped Fe-MOFs Fenton-like catalyst precursor mixed solution; and carrying out a solvothermal reaction on the mixed solution, and then carrying out solid-liquid separation and solid-phase drying to obtain the ferrous doped Fe-MOFs Fenton-like catalyst. The ferrous doped Fe-MOFs Fenton-like catalyst can improve Fenton-like mass transfer adsorption and catalytic decomposition rate and the efficiency of catalyzing Fenton-like oxidative degradation and mineralizing organic pollutants in water. The catalyst is applied to the field of organic wastewater pollution treatment, the catalytic Fenton-like activity of Fe-MOFs can be improved, the decomposition rate of Fenton-like reactions is promoted, and removal of organic pollutants in water is enhanced.

The invention discloses a plastic packaging bag, and belongs to the technical field of plastic products. The plastic packaging bag is made of components including, by weight, 100 parts of linear low-density polyethylene, 20-25 parts of polyolefin, 45-50 parts of corn straw fibers, 10-15 parts of chitosan, 30-45 parts of corn starch, 8-12 parts of titanium stearic acid, 1-5 parts of polyethylene wax and 20-30 parts of silicon carbide. Based on the linear low-density polyethylene and the polyolefin, the corn straw fibers, the chitosan, the corn starch, the titanium stearic acid, the polyethylene wax and the silicon carbide are added to obtain the novel durable, easily oxidized and degraded and environment-friendly plastic packaging bag.

The invention discloses a method for treating radioactive wastewater by utilizing a microwave-Fenton method. The method comprises the following steps: after regulating the pH (Potential of Hydrogen) of the radioactive wastewater, conveying the radioactive wastewater into a Fenton oxidizing chamber; spraying a Fenton reagent into the radioactive wastewater; enabling the radioactive wastewater to flow downward along a plurality of inclined overflowing flow guide plates to realize degradation treatment, wherein each overflowing flow guide plate is fixedly provided with a screen mesh bag for containing a solid-phase catalytic auxiliary agent; enabling the treated radioactive wastewater into a microwave treatment chamber and adding a coagulant and ozone into the microwave treatment chamber; starting a microwave generator to treat the radioactive wastewater; conveying the treated radioactive wastewater into a solid-phase separation chamber; conveying a liquid phase into a filtering barrel, which is internally provided with a filtering membrane, through a liquid phase discharging opening and carrying out filtering treatment; meanwhile, arranging an ultraviolet lamp tube in the filtering barrel and turning on the ultraviolet lamp tube in a process of carrying out the filtering treatment to finish the treatment of the radioactive wastewater.

The present invention discloses a processing method for a floral black tea, and belongs to the field of tea processing methods. The processing method for the floral black tea comprises the following steps of A, drying green tea leaves in the sun, i.e., picking fresh tea leaves with one bud and one or two leaves, drying the green tea leaves in the sun until the weight of the fresh tea leaves is reduced by about 10% and the leaves slightly wither and lose luster, and taking the leaves indoor to carry out airing; B, airing the green tea leaves, i.e., airing the green tea leaves to cool the leaf temperature to room temperature; C, shaking the green tea leaves, i.e., standing the fresh tea leaves still until the leaves is cooled down, carrying out shaking three times separately, and after shaking of each time, spreading the leaves and airing the leaves for a certain time; D, stacking the green tea leaves, i.e., stacking the shaken green tea leaves in baskets or hampers for a certain time, and slightly compressing the leaves to appropriately increase the leaf temperature and enhance aroma; E, withering the leaves; F, rolling the leaves; G, fermenting the leaves at room temperature until 80-90% of tea strips change to red; and H, drying the leaves, i.e., stir-drying the leaves at high temperature using a stir dryer until the leaves are medium-dry, and baking the leaves to complete dryness using a baking dryer. The processing method can produce a floral black tea with stable quality, rich floral aroma and mellow flavor.

The invention relates to an antibacterial oxidized graphene modified PVDF hollow fibrous membrane and a preparation method thereof. The antibacterial oxidized graphene modified PVDF hollow fibrous membrane is prepared from the following ingredients: polyvinylidene fluoride, oxidized graphene, a composite coupling agent, a surface active agent, a pore forming agent, a hydrophilic agent and a solvent. The preparation method comprises the steps that after oxidized graphene is subjected to vacuum drying, the composite coupling agent and polyvinylidene fluoride are added and mixed, and a dry powdery material is prepared; the dry powdery material is added into a mixed solution which is formed through blending of the surface active agent, the pore forming agent, the hydrophilic agent and the solvent to prepare spinning liquid, and the spinning liquid is subjected to membrane preparation through a solution spinning method technology and a membrane complexing technology. The prepared hollow fibrous membrane has the advantages that the porosity is high, the pores are distributed evenly and easy to control, the chemical property is stable, and the membrane has the catalytic and antibacterialfunctions, the membrane can achieve the effects of accelerating oxygenolysis of pollutants and preventing bacteria from proliferating on the surface of the membrane in the wastewater treatment process, and accordingly the anti-pollution property and the filtering effect of the membrane are improved.

The invention discloses a preparation method of a graphene-slag-based conducting functional composite material and application of the graphene-slag-based conducting functional composite material in sewage treatment. Graphene is compounded with blast-furnace slag powder; a granulated blast-furnace slag gel material base body is prepared; and the two-dimensional graphene is overlapped in three-dimensional porous granulated blast-furnace slag gel material base body to form a conducting functional material with the communicated graphene. The preparation method comprises the following steps: with the graphene and industrial solid waste granulated blast-furnace slag powder as raw materials, carrying out chemical reaction together with a sodium hydroxide solution in a stirring device to form slurry; and molding and maintaining to obtain the graphene-slag-based conducting functional composite material. When the graphene-slag-based conducting functional composite material is applied to simulation of industrial wastewater degradation employing basic purple 5BN, the optimal degradation rate can reach 91.16%; an overall preparation technology and application equipment are simple, and free of emission of exhaust gas, liquid waste or solid waste; and the green large-scale production can be reached.

The invention discloses a preparation method of a rod-shaped bimetallic-based composite anode material. The preparation method comprises carrying out surface activation treatment on a rod-shaped bimetallic base, preparing a conductive polyaniline membrane (PAN) interface layer on the rod-shaped bimetallic base by an impulse current method, and preparing micrometer particle WO3-doped PAN/PbO2-WO3 inert composite anode material by an anodic oxidation method. The rod-shaped bimetallic-based composite anode material has excellent electrocatalytic activity in electrochemical degradation of organic waste water, realizes thorough degradation of organic waste water, and has high corrosion resistance and a long service life.

The invention provides a novel artificial marble and manufacturing method thereof. The novel artificial marble comprises a body layer composed of a filling material and a resin adhesive material, a coating layer containing titanium dioxide or a mixed coating comprising titanium dioxide. The surface of the novel artificial marble has a titanium dioxide coating film or a coating containing titanium dioxide or the mixed coating comprising titanium dioxide, so that the artificial marble has a self-cleaning function, and can greatly reduce cost for maintaining clean when the artificial marble is used as a building material. Due to the excellent ultraviolet absorption function of titanium dioxide, decomposition of the component materials of the artificial marble can be effectively prevented; mechanical performance of the artificial marble can be maintained; and fractures/cracks can be prevented from appearance. The particles or powder of the main raw materials of the artificial marble are inorganic waste materials of buildings and livings and even waste materials of the artificial marble, thereby reducing cost, decreasing resource waste and protecting the environment.

A rotary drum type photo-catalytic reactor for treating sewage is composed of a water bath with water inlet and outlet, a rotary drum arranged horizontally in said water bath by a supporting frame and with coated TiO2 photo-catalyst layer on its inner surface, a speed adjustable motor for driving said rotary drum via gear set, and an ultraviolet lamp able to irradiate the inner surface of rotary drum by a certain angle.

The invention discloses a manganese-loaded multiphase catalyst, and a water treatment method for producing high-activity quinquevalent manganese by catalyzing ozone through the manganese-loaded multiphase catalyst, relates to the catalyst for the water treatment and a treatment method of the catalyst, and solves the problems that secondary pollution of manganese ions exists and the manganese ionsare hardly recycled in the oxidation pollution elimination process of the conventional homogeneous phase oxidizing agent quinquevalent manganese. Divalent manganese ions and a complexing agent are loaded to activated carbon to form the catalyst; water to be treated is introduced into a reactor filled with the catalyst, and ozone is introduced into the reactor for oxidation treatment. The divalentmanganese ions in the catalyst are fixed to the activated carbon, and the quinquevalent manganese oxidizing agent produced in the process for treating water by catalyzing the ozone through the divalent manganese ions does not flow away with the water body, secondary pollution of manganese ions is avoided, and the manganese ions can be recycled. The in-situ formed quinquevalent manganese has high oxidation capacity; the speed of reacting the quinquevalent manganese and organic matter is high, so the quinquevalent manganese can quickly oxidize and degrade organic pollutant and a toxic and harmful byproduct is avoided. Compared with a method for performing oxidization by only using ozone, the method has the advantages that the treatment effect is improved by 50 to 80 percent.

The invention discloses a degradable sanitary brush bristle. The degradable sanitary brush bristle is prepared from the following raw materials in parts by weight: 85-95 parts of polyethylene, 15-20 parts of plant fiber, 0.4-0.8 part of a lubricant, 0.1-0.5 part of a coupling agent and 1-5 parts of an additive, wherein the additive comprises a foaming agent masterbatch. Through addition of the foaming agent masterbatch into polypropylene, the degradable sanitary brush bristle is good in heat stability, relatively high in tensile strength and impact strength and excellent in microwave adaptability, has the advantages of light weight, heat insulation, cushioning, anticorrosion, high specific strength, low price and the like, and has greatly improved mechanical properties and heat performance; the added coupling agent is easily oxidatively degraded, so that the degradable sanitary brush bristle has a fully-degradable function; through addition of the plant fiber, the degradable sanitary brush bristle has a good environment-friendly effect. The invention further discloses a production method of the degradable sanitary brush bristle.

The invention relates to a microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals. Through catalytic oxidation by means of a catalyst compounded by various metals for sulfuric acid acidification, hydrogen peroxide oxidization and microwave assistance, COD, total phosphorus, ammonia nitrogen and chroma in tail water are efficiently removed, and effluent index demands are met efficiently and stably for a long time. The method is high in pertinence, high in reaction speed, stable in treatment effect, high in operability and low in operating cost, and provides a technical support for upgrading and reconstruction and standardized discharge of effluent treatment of breweries.

The invention discloses a predation method of D-glucosamine hydrochloride, belonging to the field of pharmaceutical chemicals. The predation method of the D-glucosamine hydrochloride comprises the following step of: preparing the D-glucosamine hydrochloride through hydrolysis under microwave promotion by taking filamentous fungi as raw materials and a hydrochloric acid and hydrogen peroxide as oxidizers. Compared with the traditional production process of the D-glucosamine hydrochloride, because the hydrogen peroxide is adopted as the additional oxidizer and the oxidative degradation of the raw materials is promoted by adopting a microwave radiation technology, the predation method can reduce the using amount of the hydrolytic hydrochloric acid by 30 percent and greatly shorten the time of hydrolysis reaction; in addition, the time of the hydrolysis reaction is shortened within 2 hours, and the yield of a product is enhanced to 2.9-3.4 percent.

The invention relates to a dual metallic copper/cobalt-organic framework material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving cobalt nitrate hexahydrate, copper nitrate and terephthalic acid in an organic solvent to obtain a precursor solution; performing a solvothermal reaction on the precursor solution at the temperature of 150 DEG C; cooling, washing and drying at the end of the reaction to obtain the dual metallic copper/cobalt-organic framework material. Cobalt and copper active center ions highly dispersed in the dual metallic copper/cobalt-organic framework material can enhance effective contact between cobalt ions as well as copper and peroxymonosulfate to produce highly-oxidative sulfate radicals, so that refractory organic pollutants in wastewater are removed. The dual metallic copper/cobalt -organic framework material is suitable for treating various organic wastewater, has the advantages of high efficiency, high durability, convenience in operation and environmental friendliness, and provides a wide prospect for the treatment of toxic, harmful and refractory organic wastewater.

Active-carbon fiber-felt-cloth mobile-curtain type filtering equipment comprises a machine body, a photocatalysis assembly, a microwave degradation assembly, a spray washing assembly and an active-carbon fiber-felt-cloth mobile-curtain assembly. The filtering technology of the filtering equipment is performed as follows: a fluid enters a right adsorption zone a from a right flange port, and impurities in the fluid is adsorbed by an active-carbon fiber-felt-cloth mobile curtain in the right adsorption zone a; then the fluid enters the interior of a photocatalysis filtering pipe which belongs to a photocatalysis degradation zone f and is filled with quartz sand as a filtering material, and impurities in the fluid is degraded under catalysis of ultraviolet light, wherein a nanometer titanium-dioxide film is deposited surfaces of quartz sand; then the fluid enters a left adsorption zone d, and residual impurities in the fluid is adsorbed by an active-carbon fiber-felt-cloth mobile curtain again; and finally, the purified fluid is discharged out from a left flange port, and thus purifying task is finished.

The invention discloses a copper oxide nano catalytic membrane for catalyzing persulfate to degrade organic wastewater and a preparation method of the copper oxide nano catalytic membrane, and belongsto the technical field of wastewater treatment. An anodic aluminum oxide membrane (AAO) serves as a template, copper oxide is loaded on the inner wall of a nanopore channel of the AAO membrane through a sol-gel method, copper oxide circular nanotubes arranged in order are formed, and therefore the copper oxide nanotube array catalytic membrane is obtained. Persulfate is used as an oxidizing agent, and can be activated into a strong oxidizing substance when passing through a copper oxide film, so that degradation and removal of organic pollutants in water are realized. Compared with a liquid-phase catalytic reaction, the nano catalytic membrane catalytic system strengthens the mass transfer diffusion of pollutants and persulfate to the surface of the copper oxide catalyst due to the nano confinement effect, improves the production of oxidizing substances, and shows higher catalytic efficiency.

The invention relates to a method for preparing aromatic monomers by virtue of bi-oxidation degradation of lignin. The method comprises the following steps: suspending lignin, an oxidant and inorganicacid in a molten salt hydrate according to the mass ratio and uniformly stirring , and reacting for 0.5 to 5 hours at 90 to 150 DEG C; after a reaction solution is cooled, suction filtering, and washing for 3 to 4 times; placing the reaction solution in 20mL of hydrogen peroxide, reacting for 5 to 24 hours at 20 to 80 DEG C, after the reaction solution is cooled, extracting and degrading a product by using ethyl acetate, removing the organic solvent in a rotary evaporating manner, vacuum drying to obtain a lignin monomer compound. The method is mild in reaction condition, rapid and efficientin reaction, and capable of efficiently degrading the lignin by breaking an ether bond (beta-O-4) and a carbon-carbon bond (Calpha-Cbeta) of the lignin; and the highest yield of the lignin monomer compound can reach 80 percent.

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 discloses a graphite type carbon nitride composite photocatalytic material containing an oxygen vacancy bismuth tungstate/oxygen-enriched structure as well as a preparation method and application of the graphite type carbon nitride composite photocatalytic material. The composite photocatalytic material is formed by compounding oxygen vacancy-containing bismuth tungstate and graphitetype carbon nitride with an oxygen-enriched structure. The preparation method comprises the following steps: calcining dicyandiamide and ammonium tungstate used as raw materials to synthesize graphite type carbon nitride with an oxygen-enriched structure, and carrying out one-step hydrothermal method under the action of octadecyl trimethyl ammonium chloride by using bismuth nitrate pentahydrate,sodium tungstate dihydrate and graphite type carbon nitride with an oxygen-enriched structure as raw materials. The composite photocatalytic material disclosed by the invention has the advantages of strong stability, strong light capturing capability, high electron-hole pair separation efficiency, excellent photocatalytic performance and the like; the preparation method has the advantages of mildreaction conditions, simple process flow, low energy consumption, less material consumption and the like, is suitable for large-scale popularization and application, has a good antibiotic removal effect, and has a good application prospect in photocatalytic degradation of antibiotic wastewater.

The invention discloses a graphene modified polyvinylidene fluoride hollow fiber ultrafiltration membrane and a preparation method thereof. The ultrafiltration membrane is prepared from the following system in mass ratio: 20 to 45% of polyvinylidene fluoride, 0.01 to 1% of graphene, 1 to 5% of graphite powder, 0 to 1% of iron powder, 0.02 to 0.5% of compound coupling agent, 1 to 25% of hydrophilic agent, 30 to 70% of diluent and 2 to 20% of pore forming agent. The whole preparation method of the ultrafiltration membrane comprises the steps of premixing the graphene and the graphite powder and microwave drying; adding the compound coupling agent, the iron powder and the polyvinylidene fluoride and mixing in high speed; adding other raw materials to manufacture into a membrane making material; utilizing a thermotropic-phase method to prepare the ultrfiltration membrane. The graphene modified polyvinylidene fluoride hollow fiber ultrafiltration membrane disclosed by the invention which has catalytic, microelectrode, antibacterial and the like functions is prepared by utilizing special performance of the graphene or special performance generated by the graphene and the iron powder; when being applied to sewage treatment, the graphene modified polyvinylidene fluoride hollow fiber ultrafiltration membrane not only has a filtering effect, but also accelerates an oxidization and degradation effect on pollutants; thus, sewage treatment efficiency and anti-pollution capacity are greatly improved.