6140 results about "Adsorption effect" patented technology

The invention discloses a tool assembly for rapid inspection of a sliding rail. The tool assembly comprises a frame, a dial indicator retaining block and a magnet. The frame is used for bearing and fixing the sliding rail, the dial indicator retaining block and the magnet. The magnet is an electromagnet, a mounting groove is formed in the frame, the magnet and the sliding rail are mounted in the mounting groove, and the dial indicator retaining block is used for detecting support of the sliding rail. The beneficial effects are that two sliding rails can be detected each time, the number of single detection is increased, and the detection efficiency is high; the sliding rail is convenient and rapid to fix through electromagnet adsorption; the tool assembly is simple in structure and convenient to operate; and the detection precision is improved while the adsorption effect is improved due to the design of the groove in the electromagnet.

The invention relates to a method for preparing a benzene adsorbing material by utilizing a discarded activated aluminum oxide. In the method, an activated aluminum oxide/active carbon composite material which has a high adsorption effect on benzene is prepared by cleaning, filtering and drying the discarded activated aluminum oxide and by closed heat treatment at low temperature. In the method, due to the adoption of a closed low-temperature heat treatment mode, holes which are blocked in the discarded activated aluminum oxide can be perforated, and organic matters adsorbed to the discarded activated aluminum oxide can be directly discomposed and carbonized and stored in the aluminum oxide holes to form active carbon, so air pollution is reduced. The method has a novel process, is simple, easy and low in cost and has a high environment friendliness and economic value, and wastes can be turned into wealth.

The present invention discloses a formaldehyde purification diatom mud decoration material and a preparation method thereof. Specifically the formaldehyde purification diatom mud decoration material comprises, by mass, 10.0-30.0 parts of refined diatomite, 20.0-50.0 parts of a powdery filler, 2.0-5.0 parts of redispersible glue powder, 20.0-40.0 parts of a gel material, 0.5-1.0 part of a dispersion medium, 3.0-8.0 parts of nanometer titanium dioxide, 1.0-4.0 parts of a modifier, 3.0-5.0 parts of anti-cracking fibers, and 20-80 parts of water. According to the present invention, with the formaldehyde purification diatom mud decoration material, the formaldehyde purification efficiency can be effectively increased, the purification persistence can be significantly improved, the defects of physical adsorption effect losing caused by saturation, and the like are avoided, and the purification speed can be accelerated; and the formaldehyde purification diatom mud decoration material of the present invention further has characteristics of good thixotropy, appropriate modeling, water resistance, alkali resistance, no powdering, no cracking and other beneficial properties, and concurrently meets process requirements of mechanical spraying, brushing coating, roller coating and the like.

The invention provides waterproof sealing paste producing chemical crosslinking and physical mortising with cement. The sealing paste is characterized by comprising the following raw materials in parts by weight: 40-60 parts of synthesized rubber latex, 20-30 parts of rubber modified emulsified asphalt, 1-2 parts of a functional additive, 10-30 parts of filler, 0.5-5 parts of plasticizer, 1-3 parts of a thickener and 2-5 parts of water. A principle is that part of molecules in the synthesized rubber and the asphalt are coupled into macromolecules with reactivity under the coupling effect of the functional additive; when the macromolecules are contacted with a basic surface, the non-reactivity molecule sections of the rubber and the asphalt form a physical adsorption effect with the basic surface, and the reactivity molecule sections react with the basic surface to form a chemical bonding effect so as to generate a powerful bonding force; and the bonding effect is difficultly influenced by outside environment factors after the bonding operation is finished. Therefore, the sealing paste is very excellent in waterproof performance.

The invention discloses a granular filtering material for adsorbing and removing heavy metals in water and a preparation method thereof. The granular material consists of the following components in part by mass: 80-120 parts of an adsorbent, 7-14 pats of an additive and 0.5-3 parts of a binding agent, wherein the adsorbent consists of the following components in part by mass: 50-70 parts of coal ash and 30-50 parts of zeolite powder or sea-foam stone powder; the additive consists of the following components in part by mass: 5-7 parts of Mg-Al hydrotalcite, 2-6 parts of biochar and 0.5-1 part of magnesium Lignosulfonate; the binding agent is bentonite. The granular filtering material is prepared through the steps of adsorbent acid modification, biochar preparation, granulation and heat treatment process. According to the invention, the prepared granular filtering material is 3-6 mm in granule size, is large in adsorption capacity and excellent in adsorption effect and can effectively remove heavy metals in water, and no secondary pollutants are dissolved out, so that the granular filtering material can be applied to the treatment on heavy metal micro-polluted water and industrial waste water containing heavy metals, and has good economic and social benefits.

The invention provides a multivalence pneumococcus capsular polysaccharide-protein conjugate composition and a preparation method thereof. The conjugate composition is prepared from capsular polysaccharides of pneumococcus of 24 different serotypes and a carrier protein in a covalence connection manner, wherein the 24 different serotypes are 1, 2, 3, 4, 5, 6A, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F and 33F. The conjugate composition is good in adsorption effect and stability, has multiple immunogenicity and protection properties aiming at invasion of pneumococcus of the 24 serotypes, and is superior to the low-valence pneumonia composition in the market, and the immune response is higher than that of uncombined compositions. By inoculating a multivalence pneumococcus capsular polysaccharide conjugate vaccine prepared from the conjugate composition, the inoculation injection times can be reduced, the immunization procedure can be simplified, and meanwhile human beings and animals can be effectively prevented from diseases resulted from the pneumococcus of the 24 serotypes, and the conjugate composition is wide in coverage range and good in immune effect.

The invention belongs to the technical field of industrial waste water treatment and pollution treatment, in particular to a preparation method of a citric acid modified rape straw adsorbent and an application thereof. The method comprises the following steps of: firstly washing natural rape straws, drying, crashing, sieving for standby; and then modifying the surface of the rape straws with citric acid so as to prepare the novel adsorbent citric acid modified rape straws. The prepared adsorbent is used for treating industrial waste water, and removing cationic dye and heavy metal ions form the waste water. The result of a static absorption test shows the adsorbent has excellent adsorption effect for the cationic dye and heavy metal ions. By the invention, the agriculture waste resource is recycled; and cheap and efficient novel adsorbent is obtained to be used for treating the industrial waste water. The preparation process of the adsorbent is simple, and the prepared adsorbent has low cost and excellent adsorption effect.

The invention discloses a preparation method and applications of a siderite-based nitrogen and phosphorus removal material. The preparation method is implemented through steps of crushing siderite ores, enabling the obtained ores to pass through a 40-mesh sieve, and adding a foaming agent into siderite ore powder in an appropriate proportion of the siderite ore powder, a binder and a pore-foaming agent or in an appropriate proportion of the siderite ore powder and a binder so as to obtain a porous granular material taking the siderite ore powder as a main body; and the porous granular material has the characteristics of high particle strength, high porosity, large specific surface area, large microbial load, and the like. The material is a microbial carrier, an anaerobic microorganism electron donor and a phosphorus removal adsorbent. The material is fed in a fixed bed to treat wastewater by way of filtering, and vaccinates nitrate-depended iron-oxidizing-bacteria-based anaerobic strain liquid, and under anaerobic conditions, microorganisms reduce nitrates into nitrogen by taking ferrous irons in siderite as electron donors, and the adsorption effect on phosphorus is enhanced. The material is mainly used for synchronously removing nitrate nitrogen and phosphates in wastewater.

The invention discloses preparation and application of magnetic nano-composite material gamma-Fe2O3/PDA (Polydopamine)-GA (Gallic Acid). The preparation comprises the following steps of carrying out a hydrothermal reaction and calcinations to obtain a gamma-Fe2O3 nano particle carrier by taking FeCl3.6H2O with low price as an iron source, ethylene glycol (EG) as a reducing agent, polyvinylpyrrolidone (PVP) as a dispersing agent and a protective agent, and natrium aceticum (NaAc) as an alkali source; then wrapping a layer of polydopamine (PDA) in a buffer solution of tris (hydroxymethyl) aminomethane-hydrochloric acid (Tris-HCl) with pH of 8.5; and finally introducing gallic acid (GA) to an ethanol system by using 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and n-hydroxysuccinimide as cross-linking agents, wherein a specific synthetic schematic diagram is seen in attached drawing 1. Then the adsorption effects of the synthesized magnetic nano-particle on metal ions Cu<2+> and Pb<2+> are discussed, the detection effects of a glassy carbon electrode modified by the magnetic nano-particle on the metal ions Cu<2+> and Pb<2+> are researched. Results show that gamma-Fe2O3/PDA-GA has excellent detection and adsorption effects on heavy metal ions in a water environment.

The invention relates to a sulfonylation graphene oxide magnetic adsorbent, and a preparation method and application thereof. The adsorbent uses graphene oxide nanosheet as a substrate; the substrate surface is loaded with magnetic ferrite nanoparticles, and contains a large amount of sulfonic acid. The method comprises the following specific steps: first subjecting a graphite powder to pre-oxidation and deep oxidation, and conducting ultrasonic separation to obtain a graphene oxide solution; then adding a mixed solution of iron ions and ferrous ions; rapidly adding ammonia solution while stirring to obtain magnetic graphene oxide; and finally grafting aminobenzene sulfonic acid to magnetic graphene oxide matrix, washing and determining a constant volume to obtain a final product. The product has good adsorption effect on the heavy metals, copper and cadmium, and organic aniline. The product has the advantages of low cost, large specific surface area, high adsorption capacity and easy separation and recovery. The invention can be used for treating wastewater from smelting factory, electronics factory, chemical plant and electroplating plant.

The invention discloses a method for preparing a bifunctional modified cellulose adsorbing agent from peanut shells and application of the method. The method comprises the following preparation steps of: washing, drying and crushing waste peanut shells, which are taken as raw materials, and removing flavochrome, hemicellulose and xylogen from the crushed peanut shells so as to obtain peanut shell cellulose; and performing surface functional modification on the materials through substitution and amidation further so as to finally obtain the amino and carboxy bifunctional modified peanut shell cellulose adsorbing material. The product is powdery and light brownish yellow, and the particle size of the product is 1.5-2.5 microns. The bifunctional modified peanut shell cellulose adsorbing material has a good adsorption effect for excessive heavy metals such as copper, chrome and mercury, phosphate, methylthionine chloride dye, and the like in water. The adsorbing agent is simple in preparation method, low in cost, cheap, easily available, good in biological compatibility and environment-friendly, contains a great deal of functional chelation groups, can realize simultaneous adsorption and removal of negative ions and positive ions, and has the advantages of being recyclable and the like.

The invention provides a method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding the white carbon black with rubber and relates to the field of application of the aliphatic polyoxyethylene ether to white carbon black modification, hoping to achieve the aims of modifying the white carbon black under the condition of no VOC emission by adopting a cheap and available modifying agent and enabling the modified white carbon black to be well dispersed as filler in a rubber matrix. The modification method is characterized in that chemical bonding and physical adsorption effect are utilized for bonding the white carbon black with 1-100% by mass of the aliphatic polyoxyethylene ether, so that the modified white carbon black is prepared. Preparation steps are as follows: white carbon black suspension is prepared, temperature of the suspension is adjusted, the white carbon black is modified, and the modified white carbon black is dried. The modified white carbon black has the advantages that particle size is reduced and hydrophobicity is obviously improved. Meanwhile, the modified white carbon black can be compounded with multiple rubbers in multiple ways, the white carbon black is uniformly distributed in the prepared rubber/modified white carbon black composite material, and all the performances of the composite material can be obviously improved compared with rubber/unmodified white carbon black.

In one embodiment, the invention provides a positive electrode protective material of a lithium sulfur battery. The material includes a nano-porous carbon network and inorganic nano-particles uniformly distributed therein. Distance of any two adjacent inorganic nano-particles is 3-50 nm. The inorganic nano-particles are metal compound nano-particles or metal-metal compound composite nano-particles. The nano-porous carbon network and the inorganic nano-particles can form an integrated three-dimensional nano-porous composite network. The positive electrode protective material has physical and chemical dual-adsorption effect and can constrain lithium polysulfide to nearby the positive electrode, thus effectively inhibiting loss of a positive active material in the lithium sulfur battery. Meanwhile, the material can accelerate conversion from soluble lithium polysulfide to indissolvable Li2S2 or Li2S, thus greatly improving energy conversion efficiency and rate capability of the lithium sulfur battery and achieving excellent cycle performance under high energy density. The invention also provides a practical application of the positive electrode protective material in the lithium sulfur battery.

The invention relates to a biochar soil conditioner and a preparation method thereof. The soil conditioner is prepared from, by weight, 2-10 parts of biochar, 1-5 parts of pyroligneous liquor, 5-10 parts of composite microorganisms, 3-5 parts of binder and 4-10 parts of organic matter. The soil conditioner can maintain soil fertility by means of the adsorption effect of biochar, adsorb nitrogen, phosphorus and potassium in soil, promote the activity of microorganisms in the soil and microorganism decomposition, improve the soil porosity, reduce the soil bulk density, increase the soil permeability, solve such problems as soil fertility loss and poor physical and chemical properties, effectively solve such a phenomenon as soil acidification, improve the quality of agricultural products, promote early ripening of crops, and increase the yield of the crops.

The invention provides a two-step decolorization method for phospholipid. The method comprises the following steps of: dissolving the phospholipid by using n-hexane as a solvent, adding a proper amount of hydrogen peroxide into the mixed phospholipid for oxidation and decolorization, and removing most pigment; and performing vacuum heating to remove un-reacted hydrogen peroxide and solvent, adding n-hexane to dissolve the phospholipid in a certain ratio, adding chromatography silica gel in a certain ratio, reacting with stirring, adsorbing peroxide, impurities and partial pigment in the phospholipid, filtering, desolventizing, and thus obtaining decolorized phospholipid. By adopting two-step decolorization, on the premise that the decolorization effect is ensured, the consumption of the hydrogen peroxide is reduced by over 30 percent, and the oxidation degree of the phospholipid in the decolorization process is effectively reduced; and by the adsorption effect of the silica gel, the acid value and the peroxide value of the phospholipid are further reduced, the transparency of the phospholipid is improved, and the quality of the product is effectively improved.

A preparation method for a combined modified straw active particulate carbon adsorption material and use of same. The preparation method for the combined modified straw active particulate carbon adsorption material comprises the following steps: 1) mixing straw powders, distilled water, a binder and a composite mineral, then pelletizing same, and then placing same in a tube furnace for pyrolysis to prepare straw particulate carbon; 2) introducing an inert gas into a modification reagent, adjusting the pH value combined and 3) soaking the straw particulate carbon into the combined modification solution for 30 min, and performing cleaning and drying, so as to obtain a combined modified straw active particulate carbon adsorption material. The combined modified straw active particulate carbon has a good adsorption effect on phosphate group in low-pollution water.

The invention discloses a preparation method for an adsorbent for treating dye wastewater, and particularly discloses a preparation method for a biomass adsorbent for treating anionic dye wastewater. The adsorbent is prepared by pretreating sugarcane bagasse, performing alkali activation and oxidization treatment, and then grafting a hyperbranched polyamidoamine polymer. The preparation method comprises the following steps: (1) performing pretreatment, alkali activation and oxidization treatment on sugarcane bagasse fiber; (2) grafting the oxidized sugarcane bagasse fiber with the hyperbranched polyamidoamine to obtain the polyamino-modified sugarcane bagasse-based adsorbent. The prepared adsorbent has the characteristics of being good in stability, good in adsorption effect, wide in application range and the like, and can be used for treating the anionic dye wastewater. Taking Congo red dye wastewater for example, the Congo red adsorption capacity and adsorption efficiency of the adsorbent respectively achieve 240mg/g and 97%. The prepared adsorbent is wide in raw material source, low in price and easily available, low in cost, convenient to operate when being applied to wastewater treatment, and simple in technology.

The invention discloses a preparation method of a graphene oxide/amino acid composite material with an adsorption effect on heavy metal ions under acidic conditions, belonging to the technical fields of preparation and application of composite materials. The preparation method comprises the following step: reacting amino groups in amino acid with carboxy groups in graphene oxide to prepare the graphene oxide/amino acid composite material by virtue of nucleophilic reaction. Amino acid is an environment-friendly amphoteric compound; because amino acid contains the amino groups and carboxy groups which have strong complexing action on the heavy metal ions, by preparing amino acid functionalized graphene oxide, the removal efficiency of functionalized graphene oxide on heavy metals under the acidic conditions can be improved by using the specific characteristic that amino acid has acidity and alkalinity; and moreover, because amino acid is environment-friendly, secondary pollution cannot be caused in a heavy metal ion removal process. Under the condition that the pH value is 2-7, relatively good adsorption effects on Pb<2+> and Cu<2+> can be achieved, and the adsorption efficiency can reach 71-99%. The graphene oxide/amino acid composite material prepared by using the preparation method disclosed by the invention has relatively high practical application values in the adsorption effects on the heavy metal ions under the acidic conditions.

The invention relates to microcapsules prepared from viable microbes such as pseudomonas, bacillus and paenibacillus serving as main active components, belonging to the technical field of microorganism and biochemistry. The method for preparing microcapsules of viable microbe biopesticide comprises the following steps of: adsorbing microbial fermentation culture solution through an adsorption effect to prepare capsule cores and solidifying the capsule cores, and adding wall materials, so as to prepare a microcapsule preparation. The microcapsule preparation prepared by adopting the method has high content of viable microbes, high storage property and strong high-temperature and ultraviolent resistances, and stable and good prevention and control effect on plant diseases and insect pests.

The invention relates to a composite nanometer anti-corrosion coating of a shell-imitation structure and a preparation method thereof. Firstly, flaky nanometer metal and flaky nanometer MXene are uniformly mixed; then, solvents and dispersion agents are added to obtain uniform MXene-metal composite dispersion liquid; next, resin is added to obtain a mixed solution; next, anti-foaming agents, curing agents, leveling agents, thickening agents, surface modification agents, corrosion inhibitors and complexing agents are sequentially added into the mixed solution and are uniformly mixed to obtain the composite nanometer anti-corrosion paint; finally, the composite nanometer anti-corrosion paint is coated onto the surface of the substrate to obtain the composite nanometer anti-corrosion coating.The preparation method provided by the invention has the advantages that the acid washing and the phosphatization are not needed; the investment of a great number of coal resources for heat supply isnot needed; the preparation process is simple and convenient; the energy consumption is low. The prepared composite nanometer anti-corrosion coating of the shell-imitation structure has the advantages that the Zn content is low; the adsorption effect between the filling materials and the resin is good; a good conductive path is formed by the MXene-metal sheet layer structure; the corrosion can beinhibited; the anti-ultraviolet ageing time is long; good economic and environment protection values and practical popularization values are realized.

The invention discloses a method for preparing quaternary amine salt ion adsorbent by using a plant with high cellulose content. Straw stalks with high cellulose content, epichlorohydrin and tri-ethylamine are taken as raw materials, ethylene diamine, diethylene triamine pentacetic acid (DTPA) or triethylenetetramine, etc are used as crosslinking agent to prepare the adsorbent under the condition of existence of N, N-dimethyl formamide. The method has the advantages of simple process, low cost, economic and practical, reproducible, etc. The adsorbent prepared by the method has the advantages of high liveweight growth rate, low secondary pollution, high stability, sound adsorption effect, wide application scope, etc; and the adsorbent can be extensively applied to the treatment of eutrophication of waters.

The invention provides a microfluidic device for automatic extraction of nucleic acid. The microfluidic device comprises a microfluidic chip and a driving device. Before an experiment, a sample, a lysis solution, magnetic beads and the like are injected into a lysis chamber of the microfluidic chip respectively by virtue of an injection hole; a cleaning solution is injected into three washing chambers; an eluent is injected into an elution chamber; then the microfluidic chip is put into a chip tray, and tight fit is formed; a step motor drives the rotation of the chip tray and the positioning control of a groove type optocoupler; the adsorption effect of upper and lower magnets on the magnetic beads is utilized to ensure that the microfluidic chip rotates back and forth in a small range to promote the reaction between the sample and the lysis solution, between the magnetic beads and the cleaning solution and between the cleaning solution and the eluent, and by virtue of a baffle plate at the inlet of each reaction chamber, the transfer between the magnetic beads and to-be-extracted nucleic acid can be performed among the chambers, thereby finishing multiple reaction steps of cell lysis, nucleic acid purification and nucleic acid elution to obtain a purified nucleic acid template and realize automatic extraction of nucleic acid.

The invention relates to a preparation method of a natural shell adsorbent. The preparation method comprises the following steps of 1, cleaning the surfaces of shells by an acid solution to remove organic and inorganic matters on the surfaces of the shells, 2, drying the cleaned shell and carrying out calcination, 3, carrying out primary crushing on the dried shells subjected to calcination, 4, carrying out deep crushing and grinding on the shells subjected to the primary crushing, carrying out screening to obtain shell powder, carrying out low-temperature pre-sintering on the shell powder to evaporate moisture so that full dehydration is realized, and 5, preparing TiO2 sol, treating the dehydrated shell powder by the TiO2 sol so that the shell powder is loaded with the TiO2 sol, and orderly carrying out drying, washing, drying and sintering to obtain shell powder-immobilized TiO2. The preparation method utilizes shells as adsorbent raw materials, reasonably utilizes waste natural resources and changes waste into valuables. Through TiO2 loading, the preparation method improves adsorption effects. The natural shell adsorbent realizes recycle of adsorbed oil and reduces resource waste.

The invention relates to an Mg/Al hydrotalcite modified charcoal composite material and a preparation method and application thereof. According to the composite material, charcoal is used as a substrate, and roasted Mg/Al hydrotalcite is loaded on the surface of the substrate. The preparation method comprises the specific steps that biomass powder is soaked with an Mg/Al water solution at first, then, a composite of Mg/Al hydrotalcite and biomass is prepared, and finally the composite of Mg/Al hydrotalcite and biomass is pyrolyzed through a tubular atmosphere furnace in N2 atmosphere to obtain the product. In the preparation process of the Mg/Al hydrotalcite modified charcoal composite material, biomass pyrolysis and hydrotalcite roasting are carried out in one heat treatment process, the preparation cost is reduced, and the preparation time is shortened. The structure of the roasted Mg/Al hydrotalcite can be partially recovered to be hydrotalcite of an orderly stratified structure after the roasted Mg/Al hydrotalcite makes contact with the water. The Mg/Al hydrotalcite modified charcoal composite material has the good adsorption effect on dye in waste water.

The invention relates to a light-weight reinforced gypsum plaster board and a preparation method thereof. The light-weight reinforced gypsum plaster board is prepared from the following raw materials in parts by weight: 100 parts of a gypsum clinker, 0.1-1 part of modified starch, 0.01-0.1 part of a foaming agent, 2-10 parts of rice straw fiber powder, 0.1-0.6 part of CMC (carboxyl methy cellulose) powder and 50-100 parts of water. By adding the rice straw fiber powder and the CMC powder, the workability of slurry is improved, the problems of low grade and low strength of desulfurization gypsum are solved, and particularly the rice straw fiber powder has an adsorption effect on Cl, so that the wetting bond quality of the gypsum plaster board is greatly improved; meanwhile, the consumption of the desulfurization gypsum and the foaming agent is reduced, and the strength and bond performance of the board are improved; the prepared gypsum plaster board is good in wetting bond performance, the mass per unit area of a 9.5mm waterproof board is 6.4kg/m<2> which is far superior to a national standard requirement that the mass per unit area is not less than 9.5kg/m<2>; and the average value of the transverse breaking load is 216.5N, the minimum value of the transverse breaking load is 202.6, the average value of the longitudinal breaking load is 448.0N, the minimum value of the longitudinal breaking load is 423.8N, and the strength is far higher than a national standard requirement.

The invention discloses a magnetic adsorbent, a preparation method and an application of the magnetic adsorbent in desulfurization of fuel oil. The adsorbent is low in operation cost, good in adsorption effect and easy to regenerate, and the loss of the adsorbent is reduced. The magnetic adsorbent comprises a carrier and an adsorption ingredient, wherein the carrier is a core-shell composite microsphere; an inner core of the core-shell composite microsphere is made of ferroferric oxide; a shell is made of porous silicon dioxide; the size of the core-shell composite microsphere is 400-1000nm; the specific surface of the core-shell composite microsphere is 1000m<2>/g; the pore volume of the core-shell composite microsphere is 0.2-0.8cm<3>/g; the mesoporous diameter is 2-6nm; the adsorption ingredient is one or more of silver nitrate, silver fluoride and silver perchlorate; and the mole ratio of silver to silicon in the shell is 0.018-0.13.