309results about How to "Easy to recycle and reuse" patented technology

The invention provides a flue gas desulfurization process employing an ionic liquid. In the process, the ionic liquid is used as an absorbent, different types of absorption towers are adopted to absorb SO2 in the flue gas at the temperature of 0-200 DEG C under the pressure of 0.09-5.0 MPa, wherein gas-liquid countercurrent contact is adopted, various types of towers are adopted to improve a mass transfer effect so as to realize the emission of flue gas reaching the standard. The ionic liquid after absorbing the SO2 is pumped into a desorber through a pump and is subjected to deabsorption by adopting a heating and / or decompressing method, and SO2 is recovered. The desorbed ionic liquid enters the absorption towers to be reused. The process provided by the invention can be used for effectively removing the SO2 in the flue gas and recovering the SO2.

The invention discloses a method for photocatalytic degradation of organic pollutants by using a defective metal organic framework photocatalyst, which adopts the defective metal organic framework photocatalyst to perform photocatalytic degradation on organic pollutants, wherein the defective metal organic framework photocatalyst is prepared by solvent thermal reaction under the action of an acidregulator and taking ferric trichloride hexahydrate and terephthalic acid as raw materials, and N, N-dimethyl formamide as a solvent; the defective metal organic framework photocatalyst is a defect type MIL-53 metal organic framework photocatalyst. The method for photocatalytic degradation of organic pollutants by using the defective metal organic framework photocatalyst has the advantages of simple process, convenient operation, low cost, easy recycling, high treatment efficiency, high degradation rate and the like, can achieve effective and rapid degradation of organic pollutants, and has good application prospect in the actual treatment of the organic pollutant wastewater.

The invention discloses multipolymer micro-nano particles and a preparation method thereof. The multipolymer micro-nano particles are prepared from styrene monomers, maleic anhydride monomers and (methyl) acrylate monomers; the multipolymer micro-nano particles are prepared in a self-stabilizing precipitation polymerization manner, and a copolymerization reaction system comprises styrene electron donor monomers, maleic anhydride electron receptor monomers and (methyl) acrylate monomers; narrow-range multipolymer micro-nano particles are separated from the reaction system through centrifugation or filtration after the polymerization reaction ends. The method adopts a simple synthesis route and mild reaction process condition and is safe and convenient to operate, the processability and water resistance of the prepared multipolymer micro-nano particles are significantly improved beside uniform particle size distribution, and the multipolymer micro-nano particles are applicable to industrial production of polymer micro-nano particles.

The invention discloses a making method of zinc oxide nanometer fiber as optical catalyst, which comprises the following steps: adopting zinc acetate as primer and fiber acetate as carrier; using organic solvent dimethyl formamide / acetone as co-solvent; adopting electrostatic spinning technique to make composite nanometer fiber film of zinc acetate / fiber acetate; dissolving in the 0.1N NaOH solution; washing; drying; sintering; obtaining the ZnO nanometer fiber film with diameter less than 100nm.

The invention belongs to the technical field of water treatment, and relates to mesoporous flower-shaped CeO2, a preparation method thereof and an application thereof as mimic oxidase to degrade wastewater containing reactive light yellow. The mesoporous flower-shaped CeO2 is a hollow type crystal consisting of a plurality of small particles with an average particle diameter of 214 nm. The preparation method comprises the following steps: firstly, by adopting CeCl3.7H2O as a cerium source, adopting urea as a precipitator and adopting PVP as a surfactant, preparing a CeO2 precursor under high pressure at a high temperature through a hydrothermal method; and roasting the precursor at a high temperature, thereby preparing a light yellow CeO2 nano material. According to the TMB chromogenic reaction, the prepared CeO2 has characteristics of mimic enzyme. The mesoporous flower-shaped CeO2 is used for reactive light yellow catalytic degradation reaction, so that the degradation rate of the reactive light yellow can be about 95% under the optimum proportion condition, and therefore, the mesoporous flower-shaped CeO2 has relatively good application prospects.

The invention discloses a method for degrading tetracycline, and belongs to the technical field of organic wastewater treatment. According to the method, a nitrogen-doped carbon quantum dot-carbon nitride metal-free catalyst is adopted to activate persulfate under visible light to degrade tetracycline. According to the nitrogen-doped carbon quantum dot-carbon nitride metal-free catalyst, carbon nitride is taken as a carrier, and the carbon nitride is modified with nitrogen-doped carbon quantum dots. The metal-free catalyst disclosed by the invention has the advantages of strong light absorption capability, high photo-induced electron-hole separation efficiency, high catalytic activity, strong oxidation-reduction capability and the like. The catalyst is used for activating persulfate to degrade antibiotic wastewater under visible light, can catalyze persulfate to efficiently generate strong oxidizing free radicals, has the advantages of high degradation efficiency, good reusability, nosecondary pollution and wide application range, and has a very good practical application prospect.

The invention relates to a seedling period mulching film recovering machine. The seedling period mulching film recovering machine is characterized in that: the seedling period mulching film recovering machine comprises a film raising wheel, a film obstructing and unloading flat belt and a film unloading wheel; the film raising wheel is designed into a wheel type and is fixedly arranged on a machine frame on both sides of crop seedlings; a plurality of film raising teeth are circumferentially arranged on the outer ring of the film raising wheel, and each film raising tooth has the same dip angle design; a pulley is fixedly arranged on the machine frame above the central line of the film raising wheel, the film raising wheel is taken as the other pulley, and the film obstructing and unloading flat belt is arranged between the film raising wheel and the pulley; the film unloading wheel is fixedly arranged on the machine frame on the rear upside of the film raising wheel and is connected with the film raising wheel through a driving chain; and a plurality of film scraping plates are circumferentially arranged on the outer ring of the film unloading wheel at the same angular intervals and are in contact with the film raising teeth and the film unloading flat belt. The seedling period mulching film recovering machine is characterized by simple structure, low power consumption, high film raising rate, low seedling hurting rate, low price, excellent performance, and the like. The seedling period mulching film recovering machine is suitable for being applied to and generalized in the recovery of seedling period mulching films of various crops.

The invention discloses a dynamic polymer thermoplastic elastomer. A polymer molecule of the thermoplastic elastomer comprises a multi-segment structure with multiple end segments and a single middlesegment, wherein the end segments are mutually mixed and / or can independently form a crystalline phase and / or a phase incompatible with the middle segment so as to form end segment-based reversible split-phase physical crosslinking; and the middle segment is in a amorphous state, partial chain segments of the middle segment contain at least one side group and / or side hydrogen bond groups on side chains, and the side hydrogen bond groups can form inter-chain supermolecule hydrogen bond dynamic crosslinking. By virtue of the dynamic reversibility of hydrogen bonds, the dynamic polymer thermoplastic elastomer has good tenacity, energy dissipation, self-repairing property and the like and can be widely applied to the fields of self-repairing sealing components, sealants, flexible elastomers and the like.

The invention discloses a method for preparing 1,3-diglyceride from a surface active magnetic nanoparticle immobilized lipase, which comprises the following steps of: (1) preparing a superparamagnetic ferriferrous oxide (Fe3O4) nanoparticle by coprecipitation performed on a mixture of divalent ferric salt and trivalent ferric salt; performing modification by a silane coupling agent; and activating the surface of the modified nanoparticle by glutaraldehyde to obtain a surface active magnetic nanoparticle; (2) adding a lipase solution, stirring, washing and drying to obtain the immobilized lipase; and (3) catalyzing glycerol to perform an esterification reaction with a fatty acid by adopting the immobilized lipase to obtain the 1,3-diglyceride. By utilizing the immobilized lipase disclosed by the invention, the activity, the operation stability and the regioselectivity are obviously improved in the synthetic reaction of the 1,3-diglyceride; the recycling operation of the lipase is greatly simplified; and moreover, the 1,3-diglyceride is high in purity and does not contain harmful solvents.

The present invention relates to a superhydrophobic sponge body and a preparation method thereof. A purpose of the present invention is to mainly solve the problem of poor hydrophobic effect of the existing adsorption recovery material. The technical scheme of the present invention comprises a superhydrophobic sponge body and a preparation method thereof, wherein the superhydrophobic sponge body comprises a sponge body and a nanometer modifier, the sponge body is a melamine sponge or a polyurethane sponge, and the nanometer modifier preparation method comprises: dissolving a nanometer material in a hydrophobic organosilicon compound agent, and stirring until completely dissolving so as to obtain the nanometer modifier. With the technical scheme of the present invention, the problem in the prior art is well solved. The preparation method of the present invention can be used in the preparation of superhydrophobic sponge bodies.

The invention discloses a method for preparing a cellulose composite sodium filter membrane, which comprises the following steps of: (1) dissolving cellulose or cellulose derivates into ionic liquid under a heating condition to obtain solution for preparing the membrane; (2) uniformly coating the solution for preparing the membrane on a non-woven fabric support and then soaking the support into a coagulating bath for coagulation to obtain a cellulose composite membrane; and (3) placing the obtained cellulose composite membrane into the solution of polyacid, poly-acyl chloride or poly-anhydride to perform crosslinking to prepare the cellulose composite sodium filter membrane. In the invention, the ionic liquid has high cellulose and cellulose derivates dissolving capability is used as the membrane-preparing solvent, so the membrane formation performance is high; and the ionic liquid can be recycled and repeatedly used. The crosslinked cellulose selective zone has high hydrophilism and selectivity, and the composite sodium filter membrane has a high flux and a high rejection ratio and can be widely applied in the separation and concentration of dyes, neutral particles, medicaments, food additives and the like.

The invention relates to an iron / cobalt duplex-metal organic framework material as well as a preparation method and application thereof. The preparation method comprises the steps: dissolving cobalt nitrate hexahydrate, iron dichloride tetrahydrate and terephthalic acid into N,N dimethyl formamide to obtain a precursor solution; performing hydrothermal reaction on the precursor solution for 14 to27 h under the temperature of 110 to 170 DEG C; cooling, washing and drying to obtain the iron / cobalt duplex-metal organic framework material. Duplex transition metal coordination sites which are highly dispersed in the prepared iron / cobalt duplex-metal organic framework material disclosed by the invention can enhance effective contact between the iron / cobalt duplex-metal organic framework material and persulfate and can efficiently catalyze the persulfate to generate sulfate radicals; thus, persistent organic pollutants in wastewater can be removed. The iron / cobalt duplex-metal organic framework material is suitable for treating varieties of organic wastewater and has the advantages of high activity, small use amount, wide application pH range, good durability, convenience in operation and environmental friendliness and wide prospect in treating toxic and harmful organic wastewater which is difficult to biodegrade.

The invention discloses a COF material-loaded transition metal catalyst, and a preparation method and application thereof. The COF material-loaded transition metal catalyst comprises a COF material and Pd<2 +> or Ni <2+> loaded on the COF material. The preparation method comprises the following steps: 1) mixing an aldehyde precursor, an amine precursor and absolute ethyl alcohol, carrying out a full reaction, and separating and purifying a reaction product to obtain a COF material; and 2) mixing the COF material, a soluble Pd salt or soluble Ni salt and dichloromethane, carrying out impregnation loading, and separating and purifying the obtained product. The COF material-loaded transition metal catalyst has the advantages of high catalytic activity, good selectivity, wide substrate application range, easiness in recycling, mild reaction conditions, usage of green and environment-friendly reaction solvents and the like when used for a semi-hydrogenation reaction of phenylacetylene compounds, and is simple in preparation process, easily available in raw materials and low in production cost.

The invention relates to a multi-doped half-load type Fenton-assisting titanium dioxide photochemical catalyst as well as a preparation method and an application method. La, Fe and N are doped so that TiO2 has visible light response. The load of ACF (Active Carbon Fiber) overcomes the disadvantages of difficult recovery and generation of second pollution of the TiO2. The creative addition of half-load type Fenton reagent solves the problems of low photocatalytic efficiency of the TiO2, large consumption of Fe<2+> of the traditional Fenton reagent, incapability of keeping concentration in flowing water, and the like. In the preparation method of the photochemical catalyst, tetra-n-butyl titanate is taken as a TiO2 precursor, absolute ethyl alcohol is taken as a solvent, and viscose-based activated carbon fibers are taken as carriers. The photochemical catalyst is prepared through drying, ultrasound processing, and calcining at a constant temperature. In the application method, ultraviolet light and visible light are taken as an excitation light source in a light-catalyzed reaction, the adding concentration of the photochemical catalyst is from 10 to 20g / L, and the adding concentration of hydrogen peroxide is from 10 to 30 mM. The photochemical catalyst has the advantages of simple preparation, high catalytic activity, easy recovery and visible light activity, and provides a basis for industrial applications.

The invention discloses a covalent organic framework material loaded Pd catalyst and a preparation method and application thereof. The covalent organic framework material loaded Pd catalyst comprisesa covalent organic framework material and Pd2+ loaded on the covalent organic framework material. The preparation method comprises the following steps: 1) mixing an aldehyde precursor, an amine precursor and absolute ethyl alcohol, carrying out aldehyde-amine condensation reaction, and separating and purifying the product to obtain a covalent organic framework material; and 2) mixing the covalentorganic framework material, soluble Pd salt and dichloromethane, carrying out impregnation loading, and separating and purifying the product. The covalent organic framework material loaded Pd catalystdisclosed by the invention has the advantages of high catalytic activity, good selectivity, the wide substrate application range, easiness in recycling, mild reaction conditions, the green and environment-friendly reaction solvent and the like when being used for Suzuki reaction, and is simple in preparation process, easily available in raw materials, low in production cost and the like.

The invention discloses a recyclable micro-seismic sensor drilling rapid installation device and method. The device comprises a water-soluble coupling agent flexible paste, a tamping block body, a sensor clamping sleeve, a reused pushing pipe, a hole protecting sleeve and a water filling rubber pipe. The inner wall of a drilled hole is protected through the hole protecting sleeve; the tamping block body is pushed through the reused pushing pipe to compact the water-soluble coupling agent flexible paste at the bottom of the drilled hole to form a water-soluble coupling agent base; the sensor clamping sleeve on which a micro-seismic sensor is placed is pushed into the water-soluble coupling agent base before solidification through the reused pushing pipe; the water filling rubber pipe communicates through the reused pushing pipe to inject water into the solidified water-soluble coupling agent base under pressure, and the sensor clamping sleeve provided with the micro-seismic sensor is pulled out of the dissolved water-soluble coupling agent base through the reused pushing pipe. The device is simple in structure, low in cost and easy to produce; and a water-soluble coupling agent material is creatively adopted, so that the complexity of a recyclable sensor mounting device (machine) is greatly reduced.

The invention discloses a preparation method of a novel orientated silver ion doped titanium dioxide / graphene oxide composite material and application of the material in photocatalytic degradation. According to the method, graphene oxide-multiwalled carbon nanotubes are adopted as a carrier to perform functionalized modification on titanium dioxide on the surface of the carrier. The preparation method is characterized by comprising the following steps: adding ferroferric oxide, graphene oxide, multiwalled carbon nanotubes and tetrabutyl titanate according to a certain ratio to prepare magnetic titanium dioxide-graphene oxide-multiwalled carbon nanotubes, and further doping silver ions, thereby obtaining the magnetic titanium dioxide-graphene oxide-multiwalled carbon nanotube composite material in which silver ions are doped in an orientated manner. The catalyst has a remarkable degradation effect on polluted sewage of an azo structure, and has the advantages of being liable to separate, recycle and the like, and the degradation rate of the catalyst under visible light can be 90% or above.

The invention relates to a fiber / CNT(carbon nano tube) / TiO2 three-dimensional recyclable efficient catalytic material, as well as preparation and application thereof. A three-dimensional continuous structure is constructed on the surface of textile fiber by CNTs, and surfaces of the CNTs are loaded with nano TiO2. Preparation comprises: soaking fiber in a dispersion liquid containing CNT compound TiO2 and polyethylene glycol 2000, lasting reaction for 2-4 h at 60-80 DEG C, drying, washing with water, repeating processes of soaking, drying and washing with water for 3-5 times, and obtaining the material. The fiber / CNT / TiO2 three-dimensional recyclable efficient catalytic material is low in cost, the preparation method is simple, requirements on equipment is are low, and the operability is good; a water treatment agent provided by the invention can remove high-concentration organic pollutants in water, is suitable for advanced treatment of various wastewater, protects the environment, avoids secondary pollution, and has the advantages of being antibacterial, removing odor, absorbing other heavy metal ions, and the like.

The present invention relates to a superhydrophobic sponge body material and a preparation method thereof. A purpose of the present invention is to mainly solve the problem of poor hydrophobic effect of the existing adsorption recovery material. The technical scheme of the present invention comprises a superhydrophobic sponge body material and a preparation method thereof, wherein the superhydrophobic sponge body material comprises a sponge body and a nanometer modifier, the sponge body is a melamine sponge or a polyurethane sponge, and the nanometer modifier preparation method comprises: dissolving a nanometer material in a hydrophobic organosilicon compound agent, and stirring until completely dissolving so as to obtain the nanometer modifier. With the technical scheme of the present invention, the problem in the prior art is well solved. The preparation method of the present invention can be used in the preparation of superhydrophobic sponge bodies.

The invention provides a method for preparing a modified titanium dioxide nano particle nanotube. The method is characterized by comprising the following steps of: providing titanium dioxide nano sol; with chloroauric acid as a raw material, thiol as a surfactant and tetraoctyl ammonium bromide as a phase transfer agent, undergoing a reduction reaction under the action of thiol carboxylic acid and sodium borohydride so as to obtain modified golden nano sol; dispersing the modified golden nano sol and the titanium dioxide nano sol in an organic solvent respectively and then mixing to obtain titanium dioxide sol modified by the golden nano sol; and dropwise adding the titanium dioxide sol modified by the golden nano sol on the surface of an anodic aluminum oxide film, performing vacuum filtration, drying, calcining the composite anodic aluminum oxide film, removing the anodic aluminum oxide film, washing, and performing centrifugal separation to obtain the modified titanium dioxide nano particle nanotube. The modified titanium dioxide nano particle nanotube has a novel and stable structure, high specific surface area and excellent nano particle activity and is easily recovered and repeatedly used.

The invention relates to a method for preparing expanded graphite load nanometer bismuth vanadate photochemical catalyst, which comprises the following steps: 1 adding bismuthate and stabilizing agent into phosphate buffer, stirring for 15 to 60 minutes to form turbid liquid, dissolving metavanadate into the phosphate buffer uniformly, adding the phosphate buffer into the turbid liquid, and stirring the solution to be uniform to form transparent solution; and 2 regulating potential of hydrogen (pH) value through alkaline solution, adding expanded graphite at the temperature of 20 DEG C to 100 DEG C, stirring, mixing, refluxing for 6 hours to 24 hours, centrifuging, filtering, washing, finally roasting the obtained products, cooling and grinding to obtain the final product. The method is low in cost, easy to apply and good in maneuverability and has low requirements for devices. The obtained expanded graphite powder bismuth vanadate is even in self-assembly, can efficiently degrade durable toxic and harmful substances under conditions of ultraviolet light and visible light, can be recovered and recycled easily and conveniently and is very suitable for deep processing of waste water.

The invention relates to a catalyst which is relevant to zinc and titanium and a chemical method for preparing the catalyst. The zinc titanate micro-nano photocatalysis material has a spheroid structure with a plurality of protrusions. The preparation method of the zinc titanate micro-nano photocatalysis material comprises the following steps of: mixing uniform concentrated ammonia water suspension A of TiO2; slowly adding a zinc salt solution or ZnO powder into the suspension A in the titanium / zinc molar ratio of 1:1 to obtain uniform suspension B; processing the suspension B at high temperature and high pressure and then centrifugally washing the suspension B with deionized water many times to obtain a precursor C; drying the precursor C, burning at high temperature, and finally ball-milling. The prepared material has high specific surface area which reaches 160.6m2 / g and has stronger visible light photocatalysis performance. The preparation method has low production cost and is suitable for scale industrial production.

The invention discloses a method for preparing a titanium dioxide and sepiolite composite material, belonging to the field of preparation of photocatalytic materials. Aiming at the problems that the directly used powdered TiO2 is large in amount, low in optical activity and short in service life and is difficultly recycled, the invention provides the method for preparing the titanium dioxide and sepiolite composite material which is high in photocatalytic performance and easy to recycle. The preparation method comprises the following steps: preparing TiO2 nano-sol by adopting a sol-gel method, loading TiO2 onto the surface of sepiolite by adopting an impregnation method, thereby obtaining the titanium dioxide and sepiolite composite material. The preparation method is simple in process, and the prepared titanium dioxide and sepiolite composite material is high in photocatalytic performance and easy to recycle and has wide application prospects.

The invention discloses a graphene-supported palladium catalyst, which includes following raw materials, by volume, 2-10 parts of a material A, 30-50 parts of ethylene glycol, 100-150 parts of graphene and 5-20 parts of a KTiNbO5 nano sheet solution, wherein the material A includes the raw materials of PdCl2 and hydrochloric acid being 30-37% in concentration, wherein the weight / volume ratio of the PdCl2 to the hydrochloric acid is (0.01-0.1) g : (10-40) ml. The invention also provides the preparation method and an application of the graphene-supported palladium catalyst. In the invention, a conventional method of the graphene-supported palladium catalyst is replaced by the preparation method, which is free of surfactants, is small in particle size, is simple in operation, can be used in synthesis of cinnamic acid, is high in yield of cinnamic acid, is simple in separation and after-treatment, is mild in reaction conditions and is green and economical.

The invention relates to a nano titanyl pyrophosphate photocatalyst and a preparation method thereof. The nano titanyl pyrophosphate photocatalyst comprises ultrafine powder of pure titanyl pyrophosphate. The preparation method is as follows: firstly dissolving inorganic titanium salt into water solution containing a surface active agent or dissolving titanate into an alcohol solvent containing the surface active agent so as to form solution A containing titanium; under stirring, slowly dropwise adding dilute alkaline solution into the solution A to obtain white or light-yellow oily suspension B; then under fast stirring, dropwise adding proper hydrogen peroxide solution to the suspension B to obtain white oily suspension C; and finally under fast stirring, slowly dropwise adding water solution of phosphoric acid, or phosphate or pyrophosphoric acid or pyrophosphate or alcohol solution of phosphoester, standing and aging, then carrying out ultrasonic cleaning and centrifugal separation to obtain white slurry, and after drying, roasting and carrying out ball milling to obtain white ultrafine powder of nano titanyl pyrophosphate with the particle size of 10-60nm.

The invention belongs to the technical field of new material preparation and relates to a preparation method of blocky hybrid aerogel which specifically refers to blocky aerogel fast prepared under the normal pressure condition and has an efficient removing effect on Cd2+ in waste water. The preparation method includes the steps that firstly, tetraethyl orthosilicate, deionized water, acetonitrile and an oxalic acid solution are measured and taken and are mixed, and the mixture is placed in a water bath kettle to react; after reaction, a beaker is taken out, 3-aminopropyltriethoxysilane is transferred into the beaker through a pipette when temperature returns to room temperature, and acetonitrile is added for aging after gelation; then gel is soaked in an acetonitrile solution containing isophorone diisocyanate and is placed in the water bath kettle for crosslinking; finally, acetonitrile is added, after standing performed under room temperature, the gel is sealed through a preservative film with needle holes and placed in a normal-pressure drying oven to be dried, and the silicon dioxide blocky hybrid aerogel is obtained. In the preparation process of the blocky hybrid aerogel, no solvent exchange or surface modification exists, consumed time is short, consumed energy is little, operation is easy, and the blocky hybrid aerogel has an efficient adsorbing effect on Cd2+ in waste water.

A comprehensive garbage sorting technology includes the steps of garbage grinding, bag breaking, magnetic separation, primary winnowing, two-grade sorting in a rotary screen and secondary winnowing. A comprehensive garbage sorting machine comprises a plate-type feeder, a garbage grinding and bag breaking machine and a magnetic separator are mounted in a feeding section and a discharging section of the plate-type feeder respectively, a first winnower and a first U-shaped belt conveyer are sequentially arranged below the discharging end of the plate-type feeder, the rotary screen comprising a first screening section and a second screening section is arranged at the rear end of the plate-type feeder, a first discharging hopper and a second discharging hopper are arranged below the first screening section and the second screening section of the rotary screen respectively, a second U-shaped belt conveyer and a third U-shaped belt conveyer are arranged below the two discharging hoppers respectively, a fourth U-shaped belt conveyer is arranged at the rear end of the rotary screen, and a second winnower is mounted below the discharging end of the rotary screen. The comprehensive garbage sorting technology and the comprehensive garbage sorting machine have the advantages that magnetic metal, building garbage, organic matters and the like in garbage can be sorted out step by step, thorough separation of various materials in household garbage is achieved, and recovery and utilization of useful materials are facilitated.

The invention relates to the technical field of chemical catalyzing, in particular to application of tungsten-based solid acid in lactic acid and lactate preparation using biomass and saccharides. Tungsten-containing salt is allowed to have hydro-thermal synthesis reaction with the chlorine salt, sulfate, nitrate, phosphate and oxalate of barium, calcium, lead, aluminum, chromium, erbium, tin, germanium, niobium and tantalum to prepare a multiple-component tungsten-based solid acid catalyst. The multiple-component tungsten-based solid acid catalyst is simple to prepare, cheap, good in hydrothermal stability, easy to recycle, capable of catalyzing monosaccharides such as fructose and glucose to convert into the lactic acid or lactate, capable of catalyzing polysaccharides such as sucrose, maltose, starch and cellulose even biomass such as wood and corn straw containing cellulose to have hydrolysis reaction so as to prepare the lactic acid or lactate, promising in application prospect and the like, multi-step reaction catalyzing by one single catalyst is achieved, and the range of the biomass and the saccharides which can be converted by the catalyst is wide.

The invention relates to a preparation method of diglyceride-enriched functional oil. The method comprises following steps of: (1) immobilizing Lecitase Ultra; (2), carrying out a glycerolysis reaction on vegetable oil under the catalysis of immobilized Lecitase Ultra; and (3) carrying out product separation. The Lecitase Ultra used in the preparation method disclosed by the invention has low price which is only 5-10 percent of the price of lipase; and resin DA-201 for Lecitase Ultra immobilization has low cost. The immobilized Lecitase Ultra has good catalysis effect, high diglyceride content, less byproducts and recycling performance of the immobilized Lecitase Ultra; and therefore the diglyceride-enriched functional oil prepared by the preparation method disclosed by the invention has lower cost and favorable application prospect in the industry.

The invention discloses a method for degrading organic wastewater by hydroxylamine hydrochloride reinforced iron oxide activated persulfate, and belongs to the technical field of water treatment. The method comprises the following specific steps: mixing hydroxylamine hydrochloride with wastewater to be pretreated; regulating pH (potential of hydrogen) to weak acidity; adding iron oxide and persulfate, and stirring at room temperature until reaction is complete; separating and recovering the iron oxide by adopting an external magnetic field to obtain purified wastewater, wherein proportion of organic matter to hydroxylamine hydrochloride to the iron oxide to the persulfate in the wastewater is 1 mmol: (5 to 10 mmol): 5mg: (10 to 30 mmol). A sulfate radical anion with strong oxidizing property is generated by the hydroxylamine hydrochloride reinforced iron oxide activated persulfate, therefore organic pollutants in a water body are removed. By adopting the method disclosed by the invention to remove the organic pollutants in the water, a removal rate can reach 70 percent to 99 percent in 30 minutes. The method disclosed by the invention is simple to operate, high in efficiency and low in operating cost, and has a broad application prospect in the field of advanced wastewater treatment.