140results about How to "Not easy to desorb" patented technology

The invention discloses a micro emulsion type water-based metal anti-rusting liquid which is prepared from the following raw materials in percentage by mass: 0-10% of anti-rusting agent, 3-20% of base oil, 0-10% of surfactant, 5-20% of corrosion inhibitor, 0.5-1.5% of stabilizing agent, 0-1% of thickening agent, 0-5% of pH adjusting agent and the balance of deionized water. By adopting the anti-rusting liquid, both the defect that an existing anti-rusting liquid such as an oil-based anti-rusting liquid is large in elimination difficulty and not easy to decompose and the defect that the anti-rusting effect of an existing water-based anti-rusting liquid cannot meet the anti-rusting effect of an oil-based anti-rusting liquid are solved, and the advantages of two anti-rusting liquids are integrated, so that the anti-rusting liquid disclosed by the invention has good functions of lubrication, cooling, anti-rusting and the like, and meanwhile the requirements of environmental-friendliness, economy and high efficiency are met.

The invention discloses a mycotoxin detoxification agent for feed and a preparation method and a feed additive thereof, and belongs to the field of feed additives. The mycotoxin detoxification agent can be used for detoxification of feed raw materials and compound feed of mycotoxin polluted corn, grains and the like. The mycotoxin detoxification agent consists of modified montmorillonite, yeast cell wall, chitosan and the like; and the preparation method has simple process. The novel mycotoxin detoxification agent for feed can effectively remove pollution of multiple mycotoxins such as aflatoxin, zearalenone, T2 toxin, vomitoxin and the like in the feed raw materials and the feed of the corn, the grains and the like, and prevent various diseases of livestock and poultry because of eating the mycotoxin polluted feed. The mycotoxin detoxification agent has simple preparation process, stable and controllable quality, convenience in use and low price, meanwhile has the advantages of supplementing nutrients, improving the disease resistance of cultured animal bodies and avoiding adsorbing nutrient elements in the feed, and guarantees the health and safety of the cultured animals.

The invention discloses a mold removal agent for feed and a preparation method and a feed additive thereof, belonging to the field of feed additives. The mold removal agent contains modified montmorillonite, yeast cell walls, chitosan, citric acid and Chinese herbal medicinal ingredients, wherein the Chinese herbal medicinal ingredients are prepared from poria cocos, rhizoma alismatis, grifola, cinnamomum cassia, rhizoma atractylodis macrocephalae and rhizoma imperatae. The mold removal agent can be used for removing mold for feed raw materials such as corn and grains and compound feed polluted by mycotoxin so as to prevent livestock and poultry from having various diseases as the livestock and poultry eat the feed polluted by the mycotoxin. The mold removal agent can reduce the absorption of the mycotoxin in the bodies of animals and meanwhile enhances the detoxification ability and the self regulating function of the bodies of animals, achieves the purpose of treating both symptoms and root causes. The mold removal agent has the characteristics of significant curative effect, safety in use, specific effect, stable preparation, controllable quality and simple preparation process, is suitable for industrial production and is convenient to feed.

The invention relates to an immobilized enzyme membrane reactor and the preparation thereof and a method for producing bio-diesel. The method comprises filling superfine fiber complex film in a die whose inside and outside are double cylindrical shape to form a film reactor, injecting activating agent solution and lipase solution in the film reactor in turn through adopting a cross-flow filtration mode, leading lipase to be chemically fixed on superfine fiber membrane surface, getting an enzyme membrane reactor which is fixed with lipase, respectively injecting mixed solution of animal and vegetable oil and carbinol in the inner side and the outer side of the superfine fiber complex film, doing catalytic alcoholysis reaction on fiber membrane surface, and producing bio-diesel. The enzyme gathering catalysis of the method of the invention is integral with a membrane separation process, and the method of the invention simplifies manufacturing technique, and meanwhile, the method of the invention overcomes inhabitation of lower alcohol to enzymatic activity in the process of catalyzing, the immobilized enzyme membrane reactor can be repeatedly used, which can achieve continuous production, improves production efficiency, and has excellent industrial application prospect.

The invention relates to a copolymerization flotation-sedimentation tank. The copolymerization flotation-sedimentation tank comprises a multi-channel folded plate copolymerization flocculation basin, a flotation-sedimentation tank and an air dissolving system, wherein the multi-channel folded plate copolymerization flocculation basin is used for realizing the coagulation and the copolymerization of flocculates and microbubbles; the flotation-sedimentation tank is connected to the rear end of the multi-channel folded plate copolymerization flocculation basin and is used for separating foamed flocculates from water flow and precipitating settleable flocculates which cannot float; and the air dissolving system is connected with a water outlet end of the flotation-sedimentation tank and is connected with the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank to supply high-pressure backflow gas dissolved water to the multi-channel folded plate copolymerization flocculation basin and the flotation-sedimentation tank. According to the copolymerization flotation-sedimentation tank, the high-pressure backflow gas dissolved water is fed for three times, by virtue of organic combination with a flocculation process, a microbubble and flocculate copolymerized environment is created, and the produced foamed flocculates are stable and are not easily separated, so that the problems that the adhesion efficiency of particles is low, the trapping effect is not ideal, the adhesion of the foamed flocculates is instable, and the like of a traditional dissolved air flotation process are solved, and the coagulation, air floatation and sedimentation processes are organically combined and integrated; and the copolymerization flotation-sedimentation tank has prominent superiority in the treatment of water quality in high-algae, low-turbidity and burst high-turbidity reservoirs.

The invention belongs to the technical field of ion membranes, which particularly relates to a zero-polar-distance ion exchange membrane. The ion exchange membrane is converted from a polymer membrane which is prepared by compounding a perfluorinated ion exchange resin and a reinforcement material, wherein a non-electrode porous gas releasing layer is arranged on at least one side of the ion exchange membrane and is formed by bonding a dispersion liquid on the surface of an ion exchange membrane layer and then drying; the dispersion liquid is formed by dispersing the broken microparticles of a perfluorinated sulfonic acid resin in an aqueous alcohol solution of the sulfonic acid resin. The prepared zero-polar-distance ion exchange membrane which is applied to the chlor-alkali industry can be used for stably and efficiently treating an alkali metal chloride solution with high impurity content and is more suitable for being applied in a zero-polar-distance electrolytic bath under a high current density condition as well as has an extremely low surface resistance. The invention further provides a preparation method of the zero-polar-distance ion exchange membrane. The method is reasonable in process and easy for industrial production.

The invention discloses a preparation method for a cellulose based nano silver composite material. The preparation method is adopted to obtain the cellulose based nano silver composite material through the following operation steps: preparing a carboxylic modified cellulose aqueous dispersion, preparing a carboxylic modified nano cellulose aqueous dispersion, and preparing the cellulose based nano silver composite material. The preparation method has the benefits that the carboxylic modified nano cellulose is adopted as a carrier, a stabilizer and a reductive agent of Ag<+>, the preparation method is rich in raw material sources and simple in preparation process, the product has the excellent properties of both cellulose and nano silver, and nano silver has the advantages of low probability of desorption, stable property and the like.

The invention discloses a method for absorbing and recycling heavy metals by using persimmon tannins. The absorbing material used in the method is prepared by the steps of: firstly dissolving cowhide collagen fibers and persimmon powder in water, reacting, adding glutaraldehyde or formaldehyde, reacting at the temperature of 50 DEG C and filtering, drying in vacuum and grinding. According to the method for absorbing and recycling the heavy metal, a chromatographic analytical column adsorption method is adopted to absorb and recycle precious metal, such as copper, iron, chrome and silver, wherein the average adsorption rate is above 95%. The method is applied to the absorbing and recycling treatments of a plurality of heavy metal ions in industrial wastewater with low concentration (less than 1000mg / L); and the method is low in the operating cost, can be reused and has no secondary pollution to the environment.

The invention discloses a micro emulsion type water-based metal anti-rusting liquid which is prepared from the following raw materials in percentage by mass: 0-10% of anti-rusting agent, 3-20% of base oil, 0-10% of surfactant, 5-20% of corrosion inhibitor, 0.5-1.5% of stabilizing agent, 0-1% of thickening agent, 0-5% of pH adjusting agent and the balance of deionized water. By adopting the anti-rusting liquid, both the defect that an existing anti-rusting liquid such as an oil-based anti-rusting liquid is large in elimination difficulty and not easy to decompose and the defect that the anti-rusting effect of an existing water-based anti-rusting liquid cannot meet the anti-rusting effect of an oil-based anti-rusting liquid are solved, and the advantages of two anti-rusting liquids are integrated, so that the anti-rusting liquid disclosed by the invention has good functions of lubrication, cooling, anti-rusting and the like, and meanwhile the requirements of environmental-friendliness, economy and high efficiency are met.

The invention provides a process method for improving the quality of non-combustible recycled tobacco leaf heated by thick slurry method and application thereof, A technology for manufacture the heated non-combustible recycle tobacco leaf by the thick slurry method, a material is added in two steps to prepare a homogenate. The composite biological agent is absorbed through the biomaterial immobilized carry. A tobacco raw material is pretreated by adsorption fermentation, subsequent to filt removal of that carrier, secondly, the pretreated tobacco raw material is subjected to high-temperature catalytic lignin pyrolysis under the alkaline condition to increase fragrance and prickle and Maillard reaction to increase fragrance, then when the heated non-combustible recycled tobacco leave is prepared by the conventional process of thick slurry method, wherein the tobacco leaves are rich in fragrance, have beautiful milk fragrance, chocolate fragrance and baking fragrance, have moderate strength, lower irritation and spicy taste, and improve smell and reduce wood flavor; In the new heating non-combustible cigarette application, harmonious and beautiful aroma, improve smoke aroma, improvedtaste, comfortable taste.

The invention discloses an adsorption material capable of removing anion pollutants in water and a preparation method thereof. The adsorption material uses activated carbon as a carrier and loads cationic surfactants in its pores. The prepared activated carbon adsorption material has high adsorption performance and selectivity for anion pollutants in water, can prolong the service life of the adsorption material in water treatment, and reduce the use cost. The preparation process does not require heating and pressure, consumes less energy, is simple to operate, does not change the particle structure characteristics of the activated carbon, can be used repeatedly, and does not generate secondary pollution.

The invention discloses alkali modified biochar and a preparation method thereof, and a method for removing emerging pollutants in sewage by using the modified biochar. The method comprises the following steps: preparing initial biochar by using a pyrolysis carbonization method, dipping the initial biochar in an alkaline solution, oscillating and fully contacting, washing with ultrapure water until the pH value is neutral, and carrying out suction filtration and drying to prepare the alkali modified biochar. Compared with the initial biochar, the alkali modified biochar prepared by the invention has larger specific surface area and stronger hydrophobicity, and has higher adsorption capacity and better removal effect on emerging pollutants bisphenol A and antibiotics (tetracycline TC, ofloxacin OFL and the like). Meanwhile, pollutants adsorbed on the alkali modified biochar are not easy to desorb, so that secondary pollution is avoided. In conclusion, emerging pollutants in sewage can be effectively removed, meanwhile, secondary pollution of the alkali-modified biochar after adsorption is little, and the method has the advantages of being easy to operate, efficient, environmentally friendly, capable of saving cost and the like.

The invention relates to a reproducible polytertiaryamine sulfur dioxide absorbent and a preparation method thereof. The absorbent comprises the following components: (1) polytertiaryamine having a mass concentration in the range from 1% to 80%, which is taken as the major component of the absorbent, wherein the polytertiaryamine exists in a solution in the form of unionized polytertiaryamine, partially ionized quaternary ammonium salt and completely ionized quaternary ammonium salt due to addition of an acid difficult to volatilize; (2) a phenol or quinone material having a mass concentration in the range from 0.01% to 1%, which is used as an antioxidant of the absorbent; (3) 1-50wt% of acid difficult to volatilize, which is used as the cosolvent and stabilizer for the polytertiaryamine; (4) 0.1-10wt% of monoalcohol amine, which is used as an activator of the absorbent; (5) 10-90wt% of water. The absorbent absorbs sulfur dioxide in mixed gases at a low temperature and releases the absorbed sulfur dioxide gas at a high temperature to generate a sulfur dioxide by-product having a dry basis concentration greater than 99%; the absorbent can be recovered and reused.

The invention relates to a spent lubrication oil regeneration device, which comprises a first heater, a precipitator, a second heater, a solid-liquid separator, an electric dehydrator, the ultrasonic membrane separator, a third heater, a catalytic cracking reactor and a fractionating tower, which are connected in sequence. An ultrasonic part is disposed at the front of a filter membrane inside the ultrasonic membrane separator, the filter membrane in the ultrasonic membrane separator is a hollow fiber membrane resistant to 80-100 DEG C and resistant to oil corrosion, and average pore size of the filter membrane is 0.1-0.5 micrometers. Spent lubrication oil is separated by the ultrasonic membrane separator to obtain light oil and heavy oil, the light oil is discharged from an oil outlet and collected for use, the heavy oil is discharged from a concentrated oil outlet into the catalytic cracking reactor to generate light oil, base lubrication oil and non-hydrocarbon gases after reaction, and the light oil, the base lubrication oil and the non-hydrocarbon gases are separated and used respectively. The spent lubrication oil regeneration device is applicable to the field of recycle of spent lubrication oil.

The invention relates to a charcoal circulation type co-coagulation flotation tank water purification system and method. Mechanical flocculation, dissolved air flotation and an inclined plate settling basin are organically combined so as to form copolymerization dissolved air flotation, and mechanical flocculation and dissolved air flotation are organically combined through a copolymerization dissolved air flotation process, so that the stability of bubble floc is improved. Ozone oxidation and biological activated carbon are organically combined, so that the decomposition ability of powder biological activated carbon on organic matters is greatly improved. Air flotation and ozone oxidation are organically combined, so that an ozone oxidation effect is greatly improved. Mechanical flocculation, copolymerization air flotation, the biological activated carbon and inclined plate settling are organically combined, so that under the conditions of effectively controlling the rotate speed, reducing the hydraulic loss and the like, an aquatic organic matter is removed, and the stable bubble floc is formed. The system provided by the invention is flexible in process and operation manner, can be beneficial for effectively reducing the operation cost, has the advantages of high adaptability to water quality change, high efficiency, convenience in operation and the like, and has a wide application prospect.

The invention discloses a persimmon tannin adsorption material and a preparation method of the persimmon tannin adsorption material. The preparation method comprises the steps of: adding 2-5 parts of cattle-hide collagen fiber and 5-8 parts of persimmon powder which are treated into 100 parts of deionized water to be mixed and dissolved, and stirring for 10-20h at the normal temperature; adding 3-8 parts of cross-linking agent into the mixed solution, adjusting the pH value of the mixed solution to 6.0-6.6 by NaOH or HCl water solution, and carrying out reaction for 1-3 hours at the normal temperature; leading reactant to carry out water bath reaction for 3-5h at the temperature of 50-60 DEG C; taking out products of the reaction and filtering, carrying out vacuum drying at the temperature of 60 DEG C; and after drying, grinding the products into fine powder by a grinding machine to obtain the cattle-hide collagen fiber-cured persimmon tannin adsorption material. The persimmon tannin adsorption material is good in physical stability, remarkable in adsorption effect, low in cost and free from secondary pollution for the environment, and can be used in a circulating way; the persimmon tannin adsorption material is used for carrying out adsorption recovery test on noble metals such as Cu, Cr, Fe, Ag and the like, and the average adsorption rate reaches more than 95%, so that better adsorption effect can be achieved; and the persimmon tannin adsorption material disclosed by the invention is suitable for adsorbing, separating and recovering the heavy metal ions in industrial waste water with low concentration.

The invention relates to a temperature-resistant and salt-resistant micro-crosslinking filtrate loss reducer for drilling fluid and a preparation method of the filtrate reducer; the micro-crosslinkingfiltrate loss reducer is generated by taking an alkenyl non-ionic monomer, an alkenyl anionic monomer, an alkenyl cationic monomer and the like as raw materials and using a proper amount of crosslinking agent and chain transfer agent for reaction. The micro-crosslinking filtrate loss reducer has the following advantages that the micro-crosslinking filtrate loss reducer contains a crosslinked microsphere structure, so that the filtrate loss of drilling fluid can be effectively reduced; various temperature-resistant and adsorption groups are contained, so that the temperature-resistant and salt-resistant properties are excellent; the molecular weight is low, and the influence on the rheological property of the drilling fluid is small.

The invention discloses hygroscopic agent, and the manufacturing method and application thereof. The hygroscopic agent comprises hygroscopic inorganic porous material and poly sodium styrenesulfonate or polyvinyl alcohol that is crosslinked by hydroxy succinic acid, wherein either of poly sodium styrenesulfonate and polyvinyl alcohol that is crosslinked by hydroxy succinic acid is attached on thesurface of hygroscopic inorganic porous material; the hygroscopic inorganic porous material adopts silica gel, the average pore size of which is more than 5 nm; and the mass ratio of hydroxy succinicacid and polyvinyl alcohol in polyvinyl alcohol that is crosslinked by hydroxy succinic acid is 1:10 to 1:4. The hygroscopic agent has characteristics of high water absorbing capacity, hygroscopic selectivity and moisture absorption capacity, and low adsorptive capacity on peculiar smell ingredients such as toluene, ethanal and the like. Polystyrene sulphonate or polyvinyl alcohol that is crosslinked by hydroxy succinic acid, which is attached on the surface of inorganic porous material, can be obtained through simple stirring, filtering and drying. The hygroscopic agent can be used on a moisture adjustment device, a humidfying device and an air interchanger.

The invention provides a preparation method and application of a sediment-water interface phosphorus release control material. For the first time, a lake sediment and kaolin mixture is used as a basic raw material, and processes like oxidation, iron salt modification, granulation and calcination are adopted, so that adsorption-desorption balance concentration EPC0 value of the material to phosphate is remarkably lowered, linear distribution coefficient Kd value of the material is increased, and the material can effectively reduce sediment interstitial water phosphate concentration and can inhibit sediment-water interface phosphate release. The material itself has weak phosphate desorption capability and high adsorption and buffering capability, so that the material can truly realize effective obstruction and control on sediment-water interface phosphorus release. The material is low in material cost, high in social and economic benefit and safety, free of ecological risk to lake water, energy-saving and environment-friendly and has remarkable effect on controlling sediment-water interface phosphorus release in different lake areas of the Dian Lake in the process of application.

The invention relates to a long glass fiber-reinforced polypropylene material and a preparation method thereof, in particular to a high-welding strength long glass fiber-reinforced polypropylene material and a preparation method thereof. The material comprises the following components: in parts by weight, 40-70 parts of polypropylene, 20-60 parts of glass fiber, 0.5-4 parts of a hyperdispersant, 0.5-3 parts of a dispersion synergist, 1-5 parts of a compatilizer, 1-4 parts of a deodorant and 0.5-2 parts of other additives. It is ensured that the glass fiber in the long glass fiber-reinforced polypropylene has sufficient length, and meanwhile the dispersion efficiency of the glass fiber is higher, so that the problems of fiber emergence on surface of products and stacking of the long glass fiber are achieved; high welding strength can be achieved in the forming process of parts, excellent air tightness is achieved, and meanwhile the advantages of low odor and low VOC are achieved, so that requirements of environmental protection and emission of a host machine plant are met; and in addition, the long glass fiber-reinforced polypropylene material has high cost performance and easy industrialization.

The invention discloses a marine anti-fouling coating. Raw materials of the coating comprise, by weight, 20-35 parts of a polydimethylsiloxane elastomer, 40-60 parts of zinc acrylate resin, 10-25 parts of teflon, 3-10 parts of a vinylidene difluoride-hexafluoropropylene copolymer, 1-5 parts of nanometer acicular structured manganese vanadate, 10-25 parts of carbon nanotube, 5-10 parts of silicon nitride, 1-5 parts of nano-silica, 3-10 parts of nano-zinc oxide, 2-8 parts of montmorillonite, 3-10 parts of fiber fluff, 2-10 parts of paprika, 1-5 parts of ground pepper, 0.5-2 parts of PTPB, 0.2-1.5 parts of 4,5-dichloro-2-n-octyl-3-isothiazolinone, 10-30 parts of ethanol, 2-10 parts of butyl cellosolve, 5-10 parts of water, 1-3 parts of a silane coupling agent and 2-5 parts of an auxiliary agent. The marine anti-fouling coating provided by the invention has high strength, good antifouling effect and excellent durability.

The invention provides a preparation method and application of a composite tobacco leaf extract. Aired tobacco stems, corn cobs and a rice bran composite biological material are adopted as immobilization carriers for adsorbing microbial aroma-producing strains, compounded and aired tobacco leaf raw materials are subjected to incubated hydrolysis fermentation, and then in combination with a continuous countercurrent ultrasonic extraction technology, the composite tobacco leaf extract is prepared. The composite tobacco leaf extract has rich natural tobacco fragrance and has a fresh fruit aroma,a wine aroma, a milk aroma, a barbecue meat aroma, a baked bread aroma, a roasted cheese aroma and other rich natural complex aromas, the irritating property is reduced, the quality of the spices is improved, the purification and separation steps are simple, the process conditions are mild, the extraction rate is increased, and the production efficiency is improved; the composite tobacco leaf extract is applied to traditional cigarettes and novel heat-not-burn cigarettes and is harmony with cigarette fragrance and uniform in style, the concentration of the smoke is increased, the satisfactionfeeling is improved, the cigarette fragrance is enhanced, the irritating property is reduced, and the taste is improved.

An efficient bionic vegetative adsorbent for removing the organic pollutants difficult to be degradated from water is prepared through providing vegetative skin, extracting to obtain waxy liquid, proportionally mixing it with clay mineral, oscillating, filtering, drying the filtered cake in the air, baking, grinding and sieving. Its application method is also disclosed.

The invention discloses a monodispersity polystyrene nanosphere and the preparation method thereof. The nanosphere adopts a solid round ball with smooth surface and the diameter of 100 to 200 nm, the polydispersity index of the round ball is 0.01 to 0.04, and the nanospheres can be closely arranged into a hexagonal configuration in a self-assembly manner. The method comprises the steps as follows: mixing styrene monomer, polystyrene microspheres, hexadecyl alcohol and Octyl phenol polyoxyethylene (10) ether according to the weight ratio of 98 to 102 : 0.98 to 1.2 : 1.98 to 2.2 : 1.98 to 2.2 and stirring for 20 min, and adding water to the mixture and continuing stirring for 30 min to obtain mixed solution, wherein the diameter of each polystyrene microsphere is 3 to 7 mm, and the weight ratio of water and the styrene monomer is 9.8 to 10.8 : 1; then placing the mixed solution in ultrasonic wave for at least 5 min to obtain miniemulsion; and after pumping nitrogen into the miniemulsionfor at least 10 min, adding potassium persulfate to the miniemulsion to perform polyreaction for 4 hours so as to manufacture the monodispersity polystyrene nanosphere. The invention can be widely applied to the fields of biomedicine, colloid science, chromatographic fractionation and the like.

The invention discloses a smog purification device, which comprises a first fan, a filtering box connected with the first fan and a smog absorption pipeline connected with the filtering box, wherein glass fiber air paper which separates the filtering box into an upper cavity and a lower cavity is disposed in the filtering box. The upper surface of the glass fiber air paper is provided with first initial effect filter cotton, and the lower surface of the glass fiber air paper is provided with a metal screen board. A second fan is installed at the position of an opening on the top of the upper cavity of the filtering box, activated carbon is placed at the bottom of the upper cavity, and the upper surface of the activated carbon is also provided with first initial effect filter cotton. The top of the lower cavity of the filtering box is provided with second initial effect filter cotton, and a labyrinth separating plate is disposed in the lower cavity to form a labyrinth area. The activated carbon is placed in the labyrinth area, and second initial effect filter cotton is also disposed between the labyrinth area and an outlet of the lower cavity. The smog purification device is capable of absorbing smog or harmful gas quickly and effectively and improves purification effect.

The invention discloses a method for preparing a modified polymethyl methacrylate anticorrosive coating on a magnesium alloy surface. The method comprises the steps of treating the magnesium alloy surface; mixing a tetraethyl orthosilicate solution with a gamma-methacryloxy propyl trimethoxyl silane solution, adding a catalyst, and heating to form sol; adding an ethanol solution in which zirconium oxychloride is dissolved into the sol, continuously heating, dropwise adding a sodium hydroxide alkaline solution, and controlling the reaction rate to form SiO2-ZrO2 hybrid sol; adding methyl methacrylate in which AIBN is dissolved, N-N-dimethylformamide and a cerous nitrate aqueous solution, and heating in the water bath environment to prepare modified PMMA-SiO2-ZrO2 hybrid sol; and smearing the PMMA-SiO2-ZrO2 hybrid sol on the surface of a magnesium alloy surface base material through rotation, drying, keeping the temperature, and cooling to prepare the modified polymethyl methacrylate anticorrosive coating on the magnesium alloy surface. According to the method, different catalysts and chemical additives are added, so that the corrosion resistance of a sol gel film on the magnesium alloy surface is improved.

The invention discloses a sulfur dioxide adsorbent. The sulfur dioxide adsorbent comprises a carrier and triethanolamine loaded on the carrier, wherein the weight ratio of triethanolamine to the carrier is (0.1 to 1)-(2 to 1). The sulfur dioxide adsorbent disclosed by the invention has the beneficial effects that the adsorptive property is good, and the desorption cannot occur easily; in a use process, the use amount of the adsorbent is small, namely a preferable absorption effect can be achieved by virtue of a small number of the adsorbent, the use cost is low, and the application prospect is wide.

The invention belongs to the technical field of radioactive wastewater treatment, and particularly relates to a method for removing radionuclide by using a nano Fe3O4-CeO2 material. The method comprises the steps as follows: the nano Fe3O4-CeO2 material is added into wastewater containing the radionuclide; then the wastewater and the nano material are mixed fully; and the radionuclide can be effectively removed after certain reaction time. According to the method, the nano Fe3O4-CeO2 material has large adsorption capacity to the radionuclide; desorption cannot be realized easily; the nano material after adsorption has a magnetic property and can be recycled easily; and a radioactive waste after the reaction is small in size and convenient to store temporarily. The reaction conditions are mild, and the method has a wide application prospect in the aspect of radioactive wastewater treatment. The nano Fe3O4-CeO2 material has saturated adsorption capacity to 90 Sr and saturated adsorption capacity to 60 Co are 21 mg / g and 19 mg / g respectively.