46results about How to "Adsorption does not affect" patented technology

The invention relates to a biomass adsorbent prepared by taking biomass waste as a raw material via thiourea modification, an application method used for realizing high-capacity adsorption and recovery of gold from aqueous solutions. A preparation method comprises following steps: biomass waste is activated with NaOH, and then is subjected to selective oxidation in the presence of NaIO4 so as to obtain a biomass waste material with dialdehyde functional groups; introduction of thiourea groups is realized via Schiff reaction of aldehyde groups with amino groups in thiosemicarbazide so as to obtain the thiourea-modified biomass adsorbent. According to the application method, the biomass adsorbent is added into a gold adsorbed solution at a certain solid liquid ratio; after oscillation of a certain time, solid liquid separation is realized, the biomass adsorbent loaded with gold is processed with acidic thiourea hydrochloric acid solution for gold desorption, or the biomass adsorbent loaded with high concentration gold is subjected to roasting, and metallic gold is obtained via decomposition of the biomass adsorbent. Adsorption capacity of the biomass adsorbent on gold ions in multi-metal coexistent systems is high; and high-selectivity recovery of gold from aqueous solutions is realized.

The invention discloses cyclodextrin modified nano-silver hydrogel, and a preparation method and an application thereof. The cyclodextrin modified nano-silver hydrogel contains 0.1%-0.4% by mass of nano-silver particles modified by in-situ reduction of cyclodextrin, the nano-silver particles are uniformly dispersed, the tensile strength of the cyclodextrin modified hydrogel is 3.5-6 MPa, and the relative standard error for measuring a molecular surface scanning Raman signal is lower than 10%. The preparation method comprises the following steps: (1) uniformly mixing cyclodextrin with a silver salt aqueous solution to obtain a mixture, and heating under an alkaline condition to react to obtain cyclodextrin modified nano-silver gel; and (2) adding a gelator, and preparing the cyclodextrin modified nano-silver hydrogel via a frozen gel forming method. The cyclodextrin modified nano-silver hydrogel provided by the invention is good in uniformity, strong in repeatability, good in mechanical property, sensitive in detection, simple to prepare and mild in reaction, and is used as a surface enhanced Raman substrate.

A process for preparing the treating agent used to treat low-concentration heavy metal sewage containing Cr and Cd includes such steps as thermal acid washing of raw silica gel, introducing the wet air from the reactor of the saturated sodium (or potassium) bromide solution to the container of water vapour saturated air and silica gel to generate a water molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain the silylated silica gel, and graft reaction on vinylimine polymer.

The invention discloses a curing agent and method for heavy metal in polluted soil. The curing agent for heavy metal in polluted soil is characterized by comprising the three components in percentage by weight: 33-40% of pulverized fuel ash, 34-51% of lime and 16-33% of peat. When the curing agent is used for treating the polluted soil, the curing method comprises the steps of sufficiently mixing the curing agent and heavy metal polluted soil according to the ratio of 1:(10-20) (weight ratio); then, adding water accounting for 40% (weight ratio) of the mixture; and then, sufficiently stirring and mixing. The curing agent for heavy metal in polluted soil, disclosed by the invention, is prepared by taking natural minerals as raw materials, so that no secondary pollution is caused, the soil fertilizer efficiency can be effectively improved while the heavy metal is cured, and the technical problems that the pH value of the soil is remarkably changed and the soil is hardened in the existing chemical remediation method are solved.

The invention relates to a beneficiation method for low-grade difficult-to-treat scheelite, and the beneficiation method can be applied to obtain tungsten concentrates from the low-grade difficult-to-treat scheelite containing calcite and fluorite. The beneficiation method comprises the steps of ore preparation and ore grinding, gravity separation by a table concentrator and re-grinding, desulphurization by flotation, roughing, scavenging and concentrating. According to the beneficiation method, a novel inhibitor YFW-12 is developed, and the inhibitor can reduce the adsorption quantity, on the surface of the calcite and the surface of fluorite, of a collecting agent without affecting adsorption, on the surface of the scheelite, of the collecting agent, has a capability of selective inhibition of the calcite and the fluorite, and is non-toxic and is low in cost. A novel collecting agent BF-01 is developed, and the collecting agent is high in collecting capability and is good in environmental adaptation. The novel inhibitor YFW-12 and the novel collecting agent BF-01 are utilized to realize efficient utilization of the scheelite containing the calcite and the fluorite, so that economic benefits are remarkable.

The invention relates to the field of new materials and environmental protection, in particular to a preparation method of an adsorption material for organic pollutants in the atmosphere. The method includes the following steps that a graphene oxide dispersion is prepared; a reducing agent is added into the graphene oxide dispersion, and stirring is conducted for 2-5 min; activated carbon is soaked in the graphene oxide dispersion and sealed; the mixture is heated to 85-95 DEG C and the temperature is kept for 0.5-24 hours, and the product is obtained after drying. According to the method, the hydrophobicity of graphene can be effectively used for preventing the adsorption of water vapor, at the same time, the gaseous organic pollutant adsorption of active sites of activated carbon is not affected, and the adsorption effect of activated carbon is significantly improved. In addition, the process is simple and the low-cost large-scale production can be achieved.

The invention aims to provide a movement following glass cleaning robot based on negative pressure absorption. The movement following glass cleaning robot comprises a cleaning device and a cleaning guiding device which are arranged at two sides of cleaned glass. The cleaning device comprises a robot support and a turbofan. The front end and the back end of the robot support are respectively provided with a cleaning member supporting carrier on which a cleaning member is mounted. The turbofan is fixed on the upper surface of the robot support. A DC motor is mounted on the turbofan. The lower surface of the robot support is provided with a negative pressure chamber which corresponds with the turbofan. The left side and the right side of the robot support are provided with Hall elements. The cleaning guiding device comprises a guided cleaning member carrier and a strong magnet fixing board. A strong magnet is fixed between the guided cleaning member carrier and the strong magnet fixing board. The movement following glass cleaning robot can perform wiping on the inner layer and the outer layer of the glass and furthermore has high operation efficiency.

A process for preparing the treating agent used to treat high-toxicity heavy metal waste water containing Hg, Cd and Pb includes such steps as thermal acid wasing of raw silica gel, introducing the wet air from the reactor of saturated potassium (or sodium) bromide solution to the container of water vapor saturated air and silica gel to generate a molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain silylated silica gel, graft reaction on vinylimine, and reacting on vinylthioether.

A process for preparing the treating agent series used to treat heavy metal serial waste water includes such steps as thermal acid washing of raw silica gel, introducing the wet air from the reactor of saturated sodium (or potassium) bromide solution to the container of water vapor saturated air and silica gel to generate a water molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and siliane coupling agent to obtain silylated silica gel, graft reaction on vinylinine to obtain a treating agent for low-concentration heavy metal sewage, and reacting on vinylthioether or sodim chloriacetate to obtain the treating agent for high-toxicity or toxic heavy metal waste water.

The invention relates to a preparation method of a mineral feed mold removing agent. According to the preparation method of the mineral feed mold removing agent, attapulgite is used as a main raw material and a small amount of tourmaline is used as a skeleton, and meanwhile, the addition of rectorite and the tourmaline can effectively reduce secondary agglomeration of fibers of the attapulgite after wet ball milling. Then, a micro organic phase is formed on the surface of the fibers of the attapulgite by organic modification. According to the solute distribution theory, a fat-soluble substanceis easier to dissolve into the micro organic phase, the micro organic phase does not really affect the ordinary adsorption of the attapulgite due to the small size of the micro organic phase, it is equivalent to providing adsorption driving force for the attapulgite, and the adsorption of the fat-soluble substance can be increased to a certain extent and the adsorption of a water-soluble substance can be reduced to a certain extent. Since mycotoxicoses are mostly fat-soluble, and nutrient elements which need to be supplemented by a feed are mostly water-soluble, the preparation method can beapplied to the field of feed mold removal.

The invention discloses a preparation method of an efficient formaldehyde adsorption material based on activated carbon. The preparation method specifically comprises the following steps: adding oxidized activated carbon into epoxy chloropropane, meanwhile, adding triethylamine into the epoxy chloropropane, and carrying out a heating reflux reaction to obtain chlorinated grafted activated carbon;carrying out a reaction on pretreated paper fibers with the chlorinated grafted activated carbon to obtain a cellulose loaded modified activated carbon material; and carrying out an amination reactionon the cellulose loaded modified activated carbon material to obtain the adsorption material. According to the invention, the activated carbon is subjected to oxidation treatment and then is graftedon cellulose after grafting modification, and the cellulose is rich in hydroxyl, so that a large amount of amino groups can be introduced through amination; meanwhile, the surface of the activated carbon subjected to oxidative grafting treatment has an increased specific surface area, and hydroxyl groups generated in a grafting process can also be used for the amination reaction, so that the largeamount of amino groups are introduced, then the prepared adsorbent not only contains a large amount of amino groups, but also has a large specific surface area, and thus adsorption performance of theadsorbent to formaldehyde is improved.

The invention discloses cyclodextrin modified nano-silver hydrogel, and a preparation method and an application thereof. The cyclodextrin modified nano-silver hydrogel contains 0.1%-0.4% by mass of nano-silver particles modified by in-situ reduction of cyclodextrin, the nano-silver particles are uniformly dispersed, the tensile strength of the cyclodextrin modified hydrogel is 3.5-6 MPa, and the relative standard error for measuring a molecular surface scanning Raman signal is lower than 10%. The preparation method comprises the following steps: (1) uniformly mixing cyclodextrin with a silver salt aqueous solution to obtain a mixture, and heating under an alkaline condition to react to obtain cyclodextrin modified nano-silver gel; and (2) adding a gelator, and preparing the cyclodextrin modified nano-silver hydrogel via a frozen gel forming method. The cyclodextrin modified nano-silver hydrogel provided by the invention is good in uniformity, strong in repeatability, good in mechanical property, sensitive in detection, simple to prepare and mild in reaction, and is used as a surface enhanced Raman substrate.

The invention relates to a beneficiation method for low-grade difficult-to-treat scheelite, and the beneficiation method can be applied to obtain tungsten concentrates from the low-grade difficult-to-treat scheelite containing calcite and fluorite. The beneficiation method comprises the steps of ore preparation and ore grinding, gravity separation by a table concentrator and re-grinding, desulphurization by flotation, roughing, scavenging and concentrating. According to the beneficiation method, a novel inhibitor YFW-12 is developed, and the inhibitor can reduce the adsorption quantity, on the surface of the calcite and the surface of fluorite, of a collecting agent without affecting adsorption, on the surface of the scheelite, of the collecting agent, has a capability of selective inhibition of the calcite and the fluorite, and is non-toxic and is low in cost. A novel collecting agent BF-01 is developed, and the collecting agent is high in collecting capability and is good in environmental adaptation. The novel inhibitor YFW-12 and the novel collecting agent BF-01 are utilized to realize efficient utilization of the scheelite containing the calcite and the fluorite, so that economic benefits are remarkable.

The invention relates to special yarn, a double-faced jacquard fabric, a high-water-absorption double-faced jacquard sponge structure fabric for cleaning and a preparation method thereof, and belongs to the technical field of yarn materials. The preparation method comprises the following steps: preparation of the special yarn; weaving of the double-faced jacquard fabric; bleaching and scouring treatment, acid pickling, thermal washing, cold washing, antibacterial treatment, antistatic treatment, hydrophilic and oleophylic treatment and dewatering treatment, and obtaining of a modified gray fabric; drying treatment of the obtained modified gray fabric, and obtaining of a dried gray fabric; sizing treatment of the dried gray fabric obtained in the step 9, and obtaining of the high-water-absorption double-faced jacquard sponge structure fabric for cleaning. The fabric has high water absorption property, high oil absorption property, safety and environment friendliness, can be naturally degraded, is velvet shedding-free and excellent in elasticity and softness, has an antistatic function and an antibacterial and anti-mildew function, can quickly and efficiently adsorb water and oil dirt and is extremely high in retention capacity.

The invention discloses a method for preparing a high-efficiency formaldehyde adsorption material based on activated carbon. The specific preparation process is as follows: add oxidized activated carbon to epichlorohydrin, add triethylamine to it at the same time, heat up and reflux to obtain chlorinated grafted activated carbon ; The pretreated paper fiber is reacted with chlorinated grafted activated carbon to obtain a cellulose-loaded modified activated carbon material; the cellulose-loaded modified activated carbon material is subjected to amination reaction to obtain an adsorption material. In the present invention, the activated carbon is oxidized and then grafted and modified to graft on the cellulose. The cellulose contains abundant hydroxyl groups and can introduce a large amount of amino groups through amination. At the same time, the hydroxyl groups produced in the grafting process can also undergo amination reaction, and a large number of amino groups are introduced, so that the prepared adsorbent not only contains a large number of amino groups, but also has a large specific surface area, which improves the adsorption performance of the adsorbent on formaldehyde.

The invention discloses an electrostatic dust removal device, which includes an outer box body, an air inlet pipe and an air outlet pipe. The outer box body has a barrel-shaped structure. By the abovetechnical scheme, after a fan guides dust into the air inlet pipe, the dust is preliminarily filtered by an activated carbon filter screen and then enters the outer box body; an electrostatic field is generated between a discharge electrode and a dust collecting plate, and the preliminarily filtered dust particles are charged and adsorbed onto the dust collecting plate; a water pump is turned on,an atomizing nozzle sprays atomized water vapor to adsorb the dust particles into the electrostatic field generated between the discharge electrode and the dust collecting plate, and the atomized water with the dust particles flows into a sewage discharge tank under the influence of gravity; when the dust collecting plate is humid, the water pump is turned off, and dry hot air is generated through the fan and an electric heating wire, so as to quickly dry the dust collecting plate. Through the embodiment of the invention, dust particles can be adsorbed, and the electrostatic field generated between the discharge electrode and the dust collecting plate is not affected, and a cleaning effect on the dust collecting plate is also achieved; and a water film can be formed on the dust collectingplate, the adsorption effect of the dust collecting plate is enhanced, and the dust collecting plate that is too humid also can be dried.

The present invention discloses a method for extracting biological products by reverse adsorption. A macroporous adsorption resin is used, a reverse column adsorption manner is used to directly extract weakly polar or non-polar products from biological product liquid containing cells and mycelial fragments, and besides, the extracted products has high purity. The method overcomes a series of disadvantages caused by use of organic solvent extraction in extraction of traditional biological products and also resolves contradiction of strict requirements for column liquid in traditional resin separation. The method is simple in technical processes, has strong selective adsorbability for the products, enables the products to be good in quality, and produces less production waste; and at the same time, online extraction and continuous production of some biological products are realized.

The invention relates to a curing agent and a curing method thereof. The polluted soil heavy metal curing agent is characterized by comprising, by weight, 30-40% of fly ash, 35-51% of lime, and 19-35% of peat. According to the present invention, when the curing agent is used to treat the polluted soil, the curing agent and the heavy metal-polluted soil are completely mixed according to a weight ratio of 1:15 so as to obtain a mixed material, water with the amount of 40% of the weight of the mixed material is added, and complete stirring mixing is performed; and the polluted soil heavy metal curing agent completely adopts the nature minerals as the raw materials so as not to produce secondary pollution, and the heavy metals are cured while the soil fertilizer efficiency can be effectively improved so as to solve the technical problems of significant soil pH value changing and soil hardening of the existing chemical repair method.

The invention relates to a putty surface decorative material, and a preparation method and a use method thereof. The putty surface decorative material is prepared from, by weight, 10-30 parts of a base material, 20-40 parts of manganese dioxide loaded diatomite, 1-5 parts of calcium carbonate whiskers, 5-10 parts of nanometer titanium dioxide, 5-10 parts of aluminum oxide, 15-50 parts of heavy calcium carbonate and 5-35 parts of spherical silica powder. The putty surface decorative material can improve the antibacterial, mildew-proof, odor-removing and formaldehyde-removing effects.

The invention provides a magnetic control sucker device and a using method thereof, and relates to the technical field of suckers. The magnetic control sucker device comprises: a hard magnetic floppydisk for attracting a substance to be attracted, a magnet piece and a rope, wherein the magnet piece is used for providing a magnetic field function for a hard magnetic floppy disk, and the magnet piece and the substance to be attracted are positioned on two sides of the hard magnetic floppy disk respectively; and the rope is used for pulling the hard magnetic floppy disk. The magnetic control sucker device can be used in the field of medical instruments, and has the advantages of being simple in structure, novel in design, controllable in attraction strength, low in maintenance cost, safe andenvironmentally friendly.

The invention aims to provide a movement following glass cleaning robot based on negative pressure absorption. The movement following glass cleaning robot comprises a cleaning device and a cleaning guiding device which are arranged at two sides of cleaned glass. The cleaning device comprises a robot support and a turbofan. The front end and the back end of the robot support are respectively provided with a cleaning member supporting carrier on which a cleaning member is mounted. The turbofan is fixed on the upper surface of the robot support. A DC motor is mounted on the turbofan. The lower surface of the robot support is provided with a negative pressure chamber which corresponds with the turbofan. The left side and the right side of the robot support are provided with Hall elements. The cleaning guiding device comprises a guided cleaning member carrier and a strong magnet fixing board. A strong magnet is fixed between the guided cleaning member carrier and the strong magnet fixing board. The movement following glass cleaning robot can perform wiping on the inner layer and the outer layer of the glass and furthermore has high operation efficiency.

The invention relates to an adsorption inhibitor of carboxybetaine surfactant, which belongs to the technical field of colloid and interface chemistry. This type of adsorption inhibitor is an oligomeric quaternary ammonium salt, the number of nitrogen atoms in the molecule is 3-8, and the number of methylene groups between the nitrogen atoms is 2-8. In aqueous medium, these compounds ionize into polycations. Due to their high charge density, they can be preferentially adsorbed to negatively charged rock or oil sand surfaces, thereby reducing the adsorption of carboxybetaine surfactants on rock or oil sand surfaces. and its hydrophobic effect on rock or oil sand surfaces. For example, it can reduce the saturated adsorption capacity of cetyl dimethyl carboxybetaine on the surface of Daqing oil sands by 48%; in the range of 1×10‑6~1×10‑4mol / L, it can make cetyl The contact angles of aqueous solutions of alkyldimethylcarboxybetaines and didodecylmethylcarboxybetaines on glass slides with negatively charged surfaces decreased from a maximum of >150° to <20°. These compounds can therefore be used as adsorption inhibitors in non-alkali binary compound flooding.

The invention discloses a preparation method of a lanthanum modified activated carbon adsorption material, and relates to the technical field of biomass material adsorption. The invention aims to solve the problems of low adsorption efficiency, low selectivity and low recovery rate of the existing lanthanum modified phosphate adsorption material. The method comprises the following steps: 1, mixing lanthanum chloride hexahydrate with activated carbon, adding water and stirring to obtain a mixed solution A; 2, dispersing the mixed solution A in glycerol to prepare a mixed solution B; and 3, carrying out a hydrothermal reaction on the mixed solution B, centrifuging and washing the product, and freeze-drying. The method is simple and low in cost; the form of the activated carbon is kept good, the loaded La nanoparticles form oxygen vacancies on the surface of the activated carbon to increase active sites on the surface of the material, and the adsorption efficiency of phosphate is improved by utilizing the synergistic effect of the two components and the specific affinity of La to the phosphate; and the material shows good phosphate adsorption performance and selectivity in a relatively large pH range, and the regeneration rate is high. The material is suitable for adsorbing phosphate in sewage.

The invention discloses a method for preparing a filter medium for removing arsenic from drinking water, which comprises the following steps of: a) mixing raw materials, namely ultra-high molecular weight polyethylene powder, powdered activated carbon, ferromanganese ore powder, red mud powder and a foaming agent in a weight ratio of 150-300:50-200:50-200:50-200:50-150; and b) pressing the mixture obtained by the step a) in a mold, sintering and cooling. Compared with the prior art, the prepared filter medium can efficiently remove the arsenic from the drinking water, is simple and convenientto use and is suitable for treating drinking water at a home terminal; and detection results show that the filter medium prepared by the method has the removal rate of 95 to 99 percent for the arsenic in the drinking water.

The invention relates to the application of an inhibitor AA / AMPS in positive flotation demagnesization of phosphate rock, which belongs to the field of mineral processing and purification technology of phosphate rock. This application is to add inhibitor AA / AMPS in the process of positive flotation demagnesification of phosphate rock. Specifically, the inhibitor AA / AMPS is used to prepare phosphate rock pulp, wherein the mass concentration of the phosphate rock pulp is 20-25%; the inhibitor AA / AMPS accounts for 100-140 g / t of the phosphate rock pulp. Inhibitor AA / AMPS (acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer), for phosphate rock containing a lot of dolomite, under alkaline conditions, inhibits the flotation of dolomite by positive flotation process It can effectively increase the difference in flotation performance between apatite and dolomite, and facilitate the efficient removal of dolomite. In addition, the inhibitor AA / AMPS has the characteristics of strong selectivity of inhibitory performance, low cost, and simple use, etc. It can effectively reduce the magnesium content of phosphate concentrate, improve the quality of concentrate, and realize the flotation of high-magnesium and low-grade phosphate rock to reduce magnesium. Target.

The invention relates to a clamp for ship block transferring and a method for ship block transferring through the clamp. The clamp comprises a magnet block, a switch handle for controlling the magnetism, a set of clamping heads and a set of connecting rods. Each clamping head comprises a clamping head body and a connecting arm. Each clamping head body is provided with a clamping opening. The connecting end of each connecting arm is movably connected with one end of the corresponding connecting rod through a connecting hole. The other end of each connecting rod is connected with the magnet block. According to the clamp for ship block transferring and the method for ship block transferring through the clamp, the structure is simple, the design is flexible, the weight is light, and installation of the clamp by construction personnel is convenient; and the clamping heads are matched with strut type shelving piers for use, the strut type shelving piers can be adsorbed on a block structure, accordingly, the strut type shelving piers can be transferred together with the block structure, the workload for arranging the strut type shelving piers for the second time is avoided, and a second set of strut type shelving piers do not need to be prepared, so that the strut type shelving pier vacancy rate is decreased.

A process for preparing the treating agent used to treat high-toxicity heavy metal waste water containing Hg, Cd and Pb includes such steps as thermal acid wasing of raw silica gel, introducing the wet air from the reactor of saturated potassium (or sodium) bromide solution to the container of water vapor saturated air and silica gel to generate a molecular layer on the surface of silica gel, silylating reaction between hydrated silica gel, hexane and silane coupling agent to obtain silylated silica gel, graft reaction on vinylimine, and reacting on vinylthioether.