35 results about "Polymer adsorption" patented technology

A polymeric adsorbent including a polymer having reacted units of a tetraethylenepentamine (TEPA), reacted units of a 3,5-diacrylamidobenzoic acid, and reacted units of a methacrylamide. The TEPA, the 3,5-diacrylamidobenzoic acid, and the methacrylamide have a molar ratio of 2 to 4:1 to 3:0.5 to 2. Reacted units of the TEPA and reacted units of the 3,5-diacrylamidobenzoic acid are covalently crosslinked, and reacted units of the TEPA and reacted units of the methacrylamide are covalently crosslinked. The polymeric adsorbent of the present disclosure can be used for water treatment.

The application discloses a kind of gallium indium selective separation adsorbents and preparation method thereof, belong to functional metallurgical polymer adsorption material technical field.Gallium, indium physical and chemical properties are extremely similar, conventional separation process is extremely difficult, current industrial separation completely relies on organic extraction process, there is long process, organic reagent cost is high, organic waste water pollution is serious, separation precision is low defect;Conventional commercial adsorption resin is poor to gallium, indium selectivity, separation coefficient is extremely low, cannot realize industrialization high-efficiency separation.The application is with macroporous polystyrene resin as matrix, by nitration, reduction, amination, chelation functional group grafting multi-step modification process, and high selectivity gallium indium separation special adsorbent is prepared.The adsorbent can preferentially specific adsorption of gallium ions in acidic system, and indium ions remain in solution, and the separation coefficient of gallium and indium is greater than or equal to 20, which can completely replace traditional extraction separation process, realize extraction-free, green, high-precision, low-cost gallium and indium high-efficiency separation, fill the industry extraction-free gallium and indium industrialization separation material technical blank.

A coating composition includes alkaline mineral particles including an oxide of an alkaline earth metal and an amine-containing polymer. The amine-containing polymer is adsorbed on the alkaline mineral particles. Forming a coating composition includes at least partially coating alkaline mineral particles with an amine-containing polymer and dispersing the alkaline mineral particles in a liquid to yield the coating composition. The alkaline mineral particles include an oxide of an alkaline earth metal.

The present disclosure provides sorbents that contained a crosslinked polymer binder that shows improved robustness and stability to repeated loading and elution. The present disclosure also provides methods of making the polymer-containing sorbent as well as methods of using the sorbent in the separation of lithium and lithium ions for a brine.

The invention provides a method for recycling and extracting rare earth elements in tailings, and belongs to the technical field of recycling and extracting rare earth elements in tailings. Predicting a three-dimensional flow field and setting liquid injection parameters by using a three-dimensional seepage grid adaptive subdivision algorithm and a permeability three-dimensional geological statistical model, and adaptively adjusting the ammonia adding amount according to a saponification state evaluation function and model prediction control; the leachate is pumped into a functionalized ion imprinted polymer adsorption column, selective adsorption is achieved through an online pH micro-control system, finally, a rare earth oxide product is obtained through gradient elution and firing, and a detection result is fed back to a model training data set; the technical problem that saponification extraction and adsorption separation procedures cannot be adaptively regulated and controlled due to the fact that the rare earth ion concentration and the impurity ion concentration of the leachate cannot be accurately predicted in real time in the leaching process is solved.

The application discloses an antistatic ink as well as a preparation method and application thereof. The ink can be used in antistatic adhesive tapes, electronic packaging films, protective films, release films or blister trays, and comprises carbon nanomaterials, a polythiophene conductive polymer and a solvent. The polythiophene conductive polymer is adsorbed on the surface of the carbon nanomaterials and forms a core-shell structure. The preparation method comprises the following steps: performing pre-dispersion treatment on the carbon nanomaterials, diluting the carbon nanomaterials, mixing the carbon nanomaterials with a water dispersion solution of the polythiophene conductive polymer, and obtaining the antistatic ink. The antistatic ink disclosed by the application has strong dispersion uniformity, no agglomeration, a smooth appearance after film formation, no defect mechanics, excellent durability, strong weathering stability, a simple preparation process and a wide application range.

The invention discloses an oil well cement fluid loss agent suitable for preventing thickening time from hanging upside down in a medium temperature section of 80-90 DEG C and a preparation method thereof. The oil well cement fluid loss agent comprises the following components: a 2-acrylamido-2-methyl propanesulfonic acid potassium solution, a cyclic monomer, a carboxylic acid monomer, an amide monomer and a chain transfer agent. The API (American Petroleum Institute) water loss of cement paste prepared by adding the oil well cement fluid loss agent into cement is less than or equal to 50mL at 80-90 DEG C, no obvious upside-down phenomenon exists in the thickening time, and the 24-hour compressive strength is more than or equal to 20MPa. According to the invention, the 2-acrylamido-2-methyl propanesulfonic acid sodium salt is replaced by the 2-acrylamido-2-methyl propanesulfonic acid potassium salt; in the temperature interval of 80-90 DEG C, early hydration can be accelerated, so that aluminate radical outbreak in cement is inhibited, a polymer adsorption layer is locked, carboxyl is prevented from being released, secondary delayed coagulation is avoided, an ettringite crystal phase is stabilized, ettringite is inhibited from being converted into a single sulfur type, and the phenomenon of thickening time upside down in the temperature interval of 80-90 DEG C is prevented.

This invention provides an improved depth filtration medium with reduced extractant for DSP filtration and clarification applications. Furthermore, it provides an improved depth filtration medium that is compatible with gamma irradiation-based filter sterilization processes. [Solution] A depth filtration medium is provided for clarifying the recovered material from a feed stream of a cell culture containing therapeutic biomolecules. The depth filtration medium is composed of a sintered mixture of a polymer adsorbent and a thermoplastic binder, has extremely low extractability, and does not require pre-washing before use. Furthermore, the constituent materials used in the sintered depth filter medium exhibit high stability to gamma rays and are compatible with gamma-based pre-use sterilization processes.

The invention discloses an adsorbent material for perfluorinated compounds in water and a preparation method and application thereof, and belongs to the technical field of water treatment materials, 1, 3-diamino-2-hydroxypropane, m-tribenzoic acid and 3, 3 '-(1, 4-phenylene) bis [2-propiolic acid] are used as raw materials to react to obtain a polyamide polymer, and finally the polyamide polymer is hydrolyzed to remove the m-tribenzoic acid to obtain the perfluorinated compounds in the water. The polymer adsorbent material is prepared; the adsorbent material for the perfluorinated compounds in the water, prepared by the invention, has a relatively large specific surface area and adsorption capacity, can be used for adsorbing the perfluorinated compounds in the water, has relatively strong mechanical stability, long service life and regeneration capacity, and has a good application prospect in the aspect of removing the perfluorinated compounds in the water.

The invention discloses a preparation method and application of pyridyl resin based on charge regulation and control, and belongs to the technical field of polymer adsorption resin. The method comprises the following steps: by increasing the proportion of monomer vinylpyridine, obtaining resin with enhanced surface Zeta positive potential, regulating and controlling the electrostatic interaction and electrostatic collapse of pyridyl resin by virtue of pH reversible switching, under an acidic condition (pH is 2-6), pyridine nitrogen atoms are protonized to form active sites with positive electricity, and PFAS is efficiently captured by virtue of electrostatic attraction; the pH is finely adjusted to be neutral, so that protonation dissociation can be realized, electrostatic interaction disappears, and green regeneration of the resin can be realized through hot water elution. Meanwhile, the poor solvent pore-foaming agent is adopted, so that the prepared resin has macropores and mesopores matched with PFAS micelles, adsorption and desorption of PFAS are more easily achieved, and the resin is suitable for treatment of high-salt, high-chlorine and other complex industrial wastewater.

The invention relates to the field of extraction, separation and purification of natural products, in particular to a method for purifying glabridin from glycyrrhiza glabra waste residues. According to the method, the glycyrrhiza glabra waste residues are taken as raw materials, and efficient purification is realized through a three-step core process: firstly, heating reflux extraction is performed by adopting a specific small-polarity organic solvent; secondly, carrying out primary purification by utilizing polyamide resin column chromatography; finally, specific ultra-pure microsphere polymer adsorption resin or two types of C18 reverse-phase silica gel fillers are innovatively selected for refining chromatography. Through optimized combination of a filler system, the key problems of low purification efficiency, high solvent consumption, difficulty in large-scale production and the like in a traditional process are solved, the process flow is simple and stable, the solvent can be recycled, a high-purity product with the glabridin content not lower than 92% can be efficiently prepared from the waste residues, high-value utilization of waste resources is achieved, and the method is suitable for industrial production. And the method has remarkable economic and environmental benefits.

The invention discloses an inorganic oxide positive electrode material, a preparation method and application. The positive electrode material comprises an inorganic oxide main body material and a polymer adsorption layer, the inorganic oxide main body material is an oxide with a layered structure, and the macromolecular adsorption layer is combined on the surface of the inorganic oxide main body material through hydrogen-bond interaction formed between a hydrophilic functional group and a metal-oxygen bond on the surface of the inorganic oxide main body material. The polymer adsorption layer is firmly combined on the surface of the oxide through multi-point anchoring, so that material dissolution and structure collapse are effectively inhibited, and interface ion transmission is regulated and controlled at the same time. The positive electrode material provided by the invention is stable in structure, excellent in cycle performance and rate capability, simple in preparation method and suitable for being applied to the water-based energy storage battery.

The application discloses melamine formaldehyde porous polymer and a preparation method and application thereof, and belongs to the technical field of environmental pollution treatment. The melamine formaldehyde porous polymer provided by the application has adsorption effect on forchlorfenuron, maleic anhydride, tebuconazole, nithiazine, thiacloprid and paclobutrazol pesticides, and no report on the adsorption research of the melamine formaldehyde porous polymer adsorption material on the related pesticides is available. The melamine formaldehyde porous polymer has a large adsorption capacity on forchlorfenuron, maleic anhydride and tebuconazole pesticides, and the adsorption capacity of forchlorfenuron can reach 231.4 mg / g. The material is simple to prepare, low in price and has strong application performance.

The invention discloses a geniposide sustained and controlled release material and a preparation method thereof, which are characterized in that ordered mesoporous carbon is used as a carrier, geniposide is used as a template molecule, dimethylaminoethyl methacrylate is used as a functional monomer, and a surface polymerization reaction is carried out in an alkaline environment; and after the reaction is finished, eluting the template molecule, and drying to obtain the geniposide surface molecularly imprinted polymer. And adsorbing a geniposide solution by the polymer to obtain the geniposide sustained and controlled release material. The prepared geniposide sustained and controlled release material is large in specific surface area, good in physical stability and uniform in particle size, has excellent specific recognition capacity and long-acting sustained release performance, and can stably and accurately release geniposide medicine in a long-acting mode.

The invention discloses a preparation method and application of a high-capacity MOFs (Metal-Organic Frameworks) boron affinity imprinted macroporous polymer adsorbent. The preparation method comprises the following steps: by taking a macroporous polymer as a carrier, uniformly distributing boron affinity imprinting recognition sites on hyperbranched CNCs through an atom free radical polymerization surface molecular imprinting technology by virtue of hydrophilic CNCs and polyethyleneimine PEI; the preparation method comprises the following steps: carrying out a grafting reaction on PEI and an initiator, carrying out a solvothermal reaction, and compounding with two-dimensional MOFs nanosheets, so as to prepare MCNCs-PEI (at) Y-Br-MIPs capable of stabilizing a W / O Pickering high internal phase emulsion; and finally, synthesizing the target adsorbent HPs (at) MCNCs-PEI (at) Y-Br-MIPs based on an emulsion microreactor. When the two-dimensional MOF nanosheet is used for selectively separating NRG, the defects that a traditional two-dimensional MOF nanosheet is low in selectivity and low in recognition site grafting efficiency are effectively overcome. The novel hybrid two-dimensional nanosheet disclosed by the invention has excellent emulsifying performance and high specific surface area, and meanwhile, a large number of boron affinity imprinting sites are introduced; the adsorption contact time is shortened by the three-dimensional macroporous structure of the columnar polymer, and rapid mass transfer, ultrahigh specific adsorption and high-selectivity recognition are realized by matching with abundant pore channels and a good specific surface area.

The present application belongs to the technical field of adsorbent materials, and particularly relates to a kind of amidoxime-based polymer adsorbent material and its preparation method and application.The present application uses tannic acid and tetrafluoro-p-xylylene dinitrile as raw materials, forms precursor polymer with three-dimensional network cross-linking structure through cross-linking reaction, introduces amidoxime group through amidoxime reaction, and obtains amidoxime-based polymer adsorbent material.The present application realizes high selective coordination capture of gold ions by introducing amidoxime group;in-situ reduction of gold ions is realized by using tannic acid phenolic hydroxyl group;high stability of the material under harsh environment is endowed by using fluorine-containing rigid cross-linking skeleton.The material can directly complete selective adsorption, in-situ reduction and elemental gold recovery of gold from complex electronic waste leaching liquor in one step, omits elution and additional reduction steps in traditional process, and has the advantages of simple process, high efficiency, good selectivity, low cost, green environmental protection and the like.

The invention belongs to the technical field of resource recycling and green metallurgy, and particularly relates to a method for recycling zinc from a waste automobile outer covering part steel plate containing a paint layer. The method comprises the steps that a steel plate is subjected to oxygen-enriched atmosphere heat treatment and water quenching, a paint layer is removed, and zinc-iron compound microcracks are induced; zinc and iron fragments are collected through high-pressure water jet; the fragments and the steel plate are put into an acid leaching solution containing sulfuric acid, mineral oil and a composite extraction auxiliary agent to react, and selective dissolution and extraction of zinc are achieved; and the separated oil phase is subjected to back extraction to obtain zinc-rich liquid, the zinc-rich liquid is combined with the acid-soaked water phase, and high-purity metal zinc is obtained through diphenylthizone precipitation, zinc ion imprinted polymer adsorption purification and electrolytic deposition. The method realizes efficient recovery of zinc and protection of the steel matrix, solves the problems of low recovery rate, poor purity and matrix corrosion in the traditional method, and has remarkable economic and environmental benefits.

Fiber compositions are provided that incorporate metal organic framework (MOF) materials into the polymeric matrix of the fiber. The metal organic framework materials can be incorporated by including MOF particles into a “dope” or synthesis solution used to form the fiber. The dope solution can then be used to form fibers that include 5.0 wt % or more of MOF in the resulting polymeric structural material of the fiber, relative to a weight of the fibers. In some aspects, the metal organic framework material can correspond to a MOF with selectivity for adsorption of CO2.

The invention discloses a complex microbial inoculant and biological polysaccharide for flocculent precipitation of aquaculture wastewater and application of the complex microbial inoculant and the biological polysaccharide, and relates to the field of microorganisms, in particular to the complex microbial inoculant and the biological polysaccharide for flocculent precipitation of aquaculture wastewater and application of the biological polysaccharide. The method solves the problems that an existing method for removing suspended solids in aquaculture wastewater is prone to equipment blockage, has no continuous treatment effect and is high in input cost. The complex microbial inoculant disclosed by the invention is prepared from filamentous flocculation fusarium fungi and far-antarctic pseudomonas. The complex microbial inoculant is used for treating aquaculture wastewater, a better flocculation effect is achieved by combining microbial cell structure characteristics and microbial growth and metabolism activities, extracellular polymeric substances generated by denitrifying bacteria adsorb suspended particles and fungal hyphae in water to be directly connected with particulate matter, a larger and more stable flocculating constituent is formed, the flocculation advantages of the two bacteria are played, and the flocculation effect of the two bacteria is improved. The turbidity and the suspended matter concentration of sewage can be reduced, and the soluble nitrogen pollutant concentration in the aquaculture wastewater can be removed.

A coating composition includes alkaline mineral particles including an oxide of an alkaline earth metal and an amine-containing polymer. The amine-containing polymer is adsorbed on the alkaline mineral particles. Forming a coating composition includes at least partially coating alkaline mineral particles with an amine-containing polymer and dispersing the alkaline mineral particles in a liquid to yield the coating composition. The alkaline mineral particles include an oxide of an alkaline earth metal.

A method for extracting a metal species from a solution is described, where the metal species comprises a rare earth element, Th, or U. The method involves the use of poly(caffeic acid) as a sorbent material. The poly(caffeic acid) may be crosslinked with a diamine crosslinker such as ethylenediamine.

This invention relates to the field of flocculant technology, and discloses a water-soluble composite flocculant, its preparation method, and its application. The raw materials for the water-soluble composite flocculant include: acrylic acid, ethylenediamine, sodium dodecyl sulfonate, modified starch, carboxymethyl cellulose, thiourea, and a solvent. This invention utilizes the polymer adsorption and bridging effects of modified starch and carboxymethyl cellulose, as well as the further entrapment effect of floc formation, ultimately forming a relatively dense network of flocs that settle, thus clarifying the overflow water. The flocculant product prepared by this invention is an aqueous solution with good solubility, good anti-aging properties, and excellent effluent flocculation effect. The raw materials required for preparing the flocculant by this invention are readily available, exhibit excellent flocculation performance, high tailings dewatering efficiency, low dosage, and low preparation cost.

This invention discloses a sterically hindered hydrophilic nano-silica, its preparation method, and its applications, belonging to the field of shale oil and gas storage modification and production enhancement technology. The sterically hindered hydrophilic nano-silica is modified with ethylene oxide and aniline. The nano-silica has a particle size of 2-5 nm, the mass percentage of ethylene oxide to nano-silica is 1.5-3:1, and the mass percentage of aniline to nano-silica is 0.8-3:1. The prepared hydrophilic nano-silica can be used in the preparation of reagents to reduce fracturing fluid damage. This hydrophilic nano-silica competes with polymers for adsorption, reducing polymer adsorption blockage and thus reducing fracture damage.

The application discloses a preparation method of a porous polymer adsorbent for nitric oxide purification, which comprises the following steps: mixing a template monomer and a first initiator to obtain a first solution, dropping the first solution into deionized water containing an emulsifier to obtain a first emulsion, and heating the first emulsion in a water bath to perform emulsion polymerization reaction and obtain a template emulsion; mixing wall material monomers and the template emulsion to obtain a second solution, adding a second initiator, heating the emulsion in a water bath to perform emulsion polymerization reaction, and obtaining a microsphere emulsion; adjusting the pH of the microsphere emulsion to be between 8 and 12, heating the emulsion in a water bath to perform hydrolysis reaction, and obtaining a second emulsion; mixing a third solution obtained by mixing a crosslinking monomer and a third initiator into the second emulsion, and heating the emulsion in a water bath to perform monomer polymerization reaction and obtain a third emulsion; and performing suction filtration on the third emulsion, and performing vacuum drying to obtain a granular porous polymer adsorbent. The preparation method has low cost and simple process, and the prepared adsorbent has high adsorption rate.

The invention belongs to the technical field of porous polymerization adsorption materials, and discloses a preparation method and application of a tyrosine porphyrin-based cross-linked organic porous polymer, and the preparation method comprises the following steps: under the protection of nitrogen, mixing tetraphenylporphyrin, tyrosine, dimethoxymethane, anhydrous ferric chloride and 1, 2-dichloroethane, and carrying out a reaction for 2-4 hours to obtain a reaction solution; then carrying out Friedel-Crafts reaction under heating and stirring conditions to obtain a reaction crude product; sequentially quenching, filtering, washing, purifying and drying the reaction crude product to obtain the tyrosine porphyrin-based cross-linked organic porous polymer which can be applied to uranium extraction in seawater. In the polymer, a porphyrin structure and carboxyl are respectively provided by tetraphenylporphyrin and tyrosine, hydrogen ions on the carboxyl can promote UO2 (CO3) 34-in seawater to be decomposed to generate UO2 < 2 + >, and hydrogen on amino of the porphyrin structure can be replaced by uranyl ions, so that the polymer can be complexed with the UO2 < 2 + >, and the UO2 < 2 + > can be converted into UO2 < 2 + >. Therefore, the effect of fully and quickly adsorbing uranium in seawater is achieved.

The utility model provides a collection device and a detection and analysis system for electronic cigarette atomized released substances, and belongs to the technical field of electronic cigarette detection. The device comprises a released substance trapping unit which is used for trapping aerosol released substances generated after atomization of electronic cigarette atomized liquid; the releaser trapping unit comprises a solid-phase extraction column, and the solid-phase extraction column is filled with a high polymer adsorption material; the smoking unit is used for smoking the electronic cigarette; the smoking unit is connected with the released substance trapping unit, so that aerosol released substances generated by smoking the electronic cigarette flow through the solid-phase extraction column and are adsorbed and trapped by the high polymer adsorption material. The collecting device for the electronic cigarette atomized released substances has very good trapping efficiency on substances with various phase states and pH values in the aerosol released substances of the electronic cigarette, particularly has a relatively strong adsorption effect on low-carbon ester and olefinic terpene flavor substances, improves the detection accuracy, and is suitable for popularization and application. The method is suitable for simultaneous detection of various components in the electronic cigarette product.

The application belongs to the technical field of water treatment agent preparation, and provides a phosphorus-free and sodium-free special water treatment agent for boilers, a preparation method and application thereof; firstly, a variety of acid monomers containing carboxyl and sulfonic acid groups and a crosslinking agent are polymerized through a free radical copolymerization reaction to obtain an anionic scale inhibition copolymer; secondly, a quaternary ammonium salt cationic monomer is copolymerized with an acrylamide monomer to obtain a cationic quaternary ammonium corrosion inhibitor polymer which is adsorbed on a metal surface to form a protective film; thirdly, a natural cellulose derivative is used as a skeleton, and a carboxylic acid functional chain segment is introduced through graft polymerization technology to obtain a multi-hydroxyl graft polymer; finally, the anionic scale inhibitor, the cationic corrosion inhibitor and the multi-hydroxyl dispersant are compounded to realize the functions of scale inhibition and corrosion inhibition, and the obtained water treatment agent does not contain phosphorus and sodium elements, is environmentally friendly, and is applied to the field of boiler water treatment.

Disclosed herein are a polymeric material comprising a plurality of polymeric nanosheets arranged in a layer-by-layer configuration to provide a two-dimensional microporous polymeric material, wherein each of the plurality of polymeric nanosheets is formed from a plurality of ladder-shaped polymers, the ladder-shaped polymers are formed from at least one multivalent monomeric material that has: two or more polymerisable functional groups selected from one or both of acetylene and vinyl functional groups; and a functional group capable of forming a halogen bond with a halogen atom, use of the polymeric material, and a method of manufacturing the polymeric material. Also disclosed herein is a method of adsorbing Li+ and / or B3+ ions from an aqueous solution comprising a mixture of ionic species.

A method of removing PFAS from water by providing a mixture of a porous material, water, and optionally a per- or poly-fluoro alkyl substance and adding gas bubbles to the mixture to form a foam having a portion of the PFAS. The porous material is made by copolymerizing a poly(ethylene glycol) acrylate with an acrylate monomer. The acrylate monomer has a functional group that interacts with an anionic group, a cationic group, or a perfluoroalkyl group.

This application relates to the field of amino acid separation and purification technology, and discloses a tyrosine purification process, including: adding sodium polyacrylate and anhydrous citric acid to ammonia water to prepare an alkaline composite feed solution; heating an acidic L-tyrosine extract as a crystallization base solution; simultaneously cooling and feeding the alkaline composite feed solution at a high initial stirring speed; when the pH value of the system reaches the nucleation critical threshold point, abruptly reducing the stirring speed to a lower set value; continuing to maintain the cooling and pH rise rate until the endpoint temperature and endpoint pH value, and then performing solid-liquid separation and washing after maintaining the temperature for crystal growth. This invention, through the synergistic regulation of the chemical microenvironment and physical flow field, utilizes polymer adsorption to change the needle-like crystallization habit of tyrosine, transforming it into short columnar crystals, improving the filter cake pore structure, increasing impurity elution efficiency, reducing washing water consumption, and improving product purity.