25 results about "Polymer adsorbent" patented technology

The invention discloses a hydrated polymer adsorbent based on saponin embryo modification as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials. The adsorbent is a three-dimensional network structure material which is prepared by acylating and modifying saponin embryos through maleic anhydride, then carrying out graft copolymerization on the modified saponin embryos, diacetone acrylamide and glycidyl methacrylate, and carrying out crosslinking through N, N-dianilino tetrahydrofuran. The preparation method mainly comprises the following steps: firstly, carrying out acylation reaction on saponin seed embryo dispersion liquid and maleic anhydride under an alkaline condition to obtain acylated saponin seed embryos; then carrying out graft copolymerization with two functional monomers in a hydrogen peroxide-acetylacetone initiation system, and finally adding a cross-linking agent to complete a cross-linking reaction. The molecular chain of the prepared adsorbent is rich in various functional groups such as acylamino, carboxyl and epoxy group, and the adsorbent has efficient adsorption capacity on heavy metal ions and oil pollutants in water, and is large in adsorption capacity and good in stability.

The application discloses a kind of photoresponsive cation covalent organic framework materials and its preparation method and application in rhenium adsorption and photocontrol desorption, belong to polymer adsorbent and scattered noble metal recovery technical field.The photoresponsive cation covalent organic framework material introduces the double pyridinium structure unit that can occur photoinduced electron transfer in framework, under the condition that no specific light irradiation stimulus is applied, the double pyridinium structure unit maintains cationic state, to realize the adsorption of ReO4 ‑ By electrostatic interaction and anion exchange effect;Under light irradiation, the charge of double pyridinium structure is reduced, and the adsorbed ReO4 ‑ Desorption in pure water system.After desorption, the material is treated by oxidation and heating to restore the cationic structure, realizing cyclic regeneration.The application constructs adsorption-desorption system based on photoresponsive charge regulation mechanism, without strong eluent, with the characteristics of mild operation, good controllability and high cycle stability, suitable for green separation and recovery of rhenium resources.

The application discloses a 2,4-dinitrophenol / Pb (II) double-template imprinted polymer adsorbent and a preparation method thereof. The double-template imprinted monolithic adsorbent is prepared by using in-situ polymerization technology, 2,4-dinitrophenol and Pb (II) are used as imprinting templates, 4-vinylpyridine and dimethylaminopropyl acrylamide are used as functional monomers. The functional monomers and the templates are effectively combined through hydrogen bond action and coordination action, and then a porogen and a crosslinking agent are added to react to form a polymer. The double templates are eluted, and a three-dimensional cavity structure with specific recognition function is left. The specific binding sites and shapes on the cavity are used to realize selective extraction of NP S and Pb (II). Meanwhile, the prepared double-template imprinted adsorbent has the advantages of simple operation, good permeability, low cost and wide application range, and therefore the double-template imprinted polymer monolithic adsorbent prepared by the application has good practical application value.

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 provides a preparation method and application of a porous material for wastewater purification based on a cationic super-crosslinked polymer. According to the invention, a cationic monomer 1-benzyl-3-methylimidazole chloride salt is introduced into a biphenyl benzyl chloride framework, a cationic super-crosslinked polymer is prepared through a Friedel-Crafts alkylation reaction, and the super-crosslinked polymer adsorbent has good adsorption performance on an anionic organic pollutant methyl orange; the adsorbent is a potential adsorbent for removing anionic organic pollutants in a water environment; compared with a pure biphenyl-dichlorobenzyl hyper-crosslinked polymer, the HCP-BCMBP-BMC has the advantages that due to the introduction of an ionic monomer, the electrostatic interaction force is increased, and the adsorption capacity on methyl orange is improved; the ionic super-crosslinked polymer HCP-BCMBP-BMC (1: 1) has the best methyl orange adsorption performance, adsorption equilibrium can be achieved within 20 min, and the adsorption capacity is 374 mg / g.

The invention discloses a thickened oil development method for breaking through a fireflooding interlayer based on a combustion improver with stratum adsorbability. Selecting a heavy oil reservoir, identifying and confirming a low-permeability interlayer area, and delimiting a target injection area and an injection well group; injecting a combustion improver composition with stratum adsorbability into the interlayer area, and after adsorption is completed, implementing front air pre-injection to activate and catalyze the oxidation capacity of the combustion improver; an ignition agent is continuously injected through the gas injection well to initiate an in-situ combustion reaction; gas injection is maintained, parameters such as combustion temperature and product components are monitored, and stable propulsion of the combustion front edge is controlled. The combustion improver composition comprises an oxidant, a combustion improver, an inorganic catalyst, a catalyst with stratum adsorbability, an emulsifier / surfactant, a polymer adsorbent, a solvent and a pH regulator. The stratum adsorbability of the combustion improver is improved, the combustion improver is enriched at the adsorption site of the interlayer part, high-temperature and high-pressure reaction is generated after ignition, the interlayer structure is broken through, and heat channel breaking through and stable combustion wave propelling are achieved.

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 discloses a preparation process of a kudzuvine root active ingredient extraction-protection integrated sustained-release microcapsule. Firstly, supercritical carbon dioxide extraction is combined with a macroporous resin adsorption step-by-step extraction technology, effective components are efficiently extracted and enriched from radix puerariae, and damage to the structure of the active components in the extraction process is reduced to the maximum extent. Loading the enriched radix puerariae extracting solution into a sodium alginate-chitosan composite hydrogel microcapsule core, and coating the outer layer of the sodium alginate-chitosan composite hydrogel microcapsule core with sodium alginate to form a compact shell layer, so as to prepare the microcapsule preparation with slow release performance and gastric acid degradation resistance. The microcapsule is stable in a simulated gastric acid environment, the release duration of effective components in an in-vitro release experiment is relatively long, and the active components can be prevented from being damaged by gastric acid and can be slowly released in intestinal tracts.

This invention discloses a modified alumina nanoparticle and a modified composite adsorbent, as well as their preparation method and application, belonging to the field of polymer adsorbent technology. The modified alumina nanoparticle preparation method is as follows: (1) Alumina nanoparticles are added to a dispersion medium, ultrasonically treated, the supernatant is removed, and more dispersion medium is added; (2) A silane coupling agent is added, the mixture is stirred, washed, and dried to obtain the final product. The modified composite adsorbent includes an oil phase and an aqueous phase; the preparation method is as follows: (1) An oil phase is obtained; (2) A suspension is formed; (3) An aqueous phase is obtained; (4) The oil phase is added to the aqueous phase, stirred, aged, cooled, washed, and dried to obtain the final product. In an acrylate-based polymerization system, this invention introduces modified alumina nanoparticles to chemically modify the material surface, increasing the density of surface active sites and enhancing the specific capture ability of chlorinated organic compounds, thereby achieving rapid capture and selective separation of chlorinated hydrocarbons in the oil phase.

A polymer resin oil removal device includes a resin adsorption tank, an oil-water separation tank, and an intermediate storage tank. The resin adsorption tank has a second inlet pipeline at its bottom and a first outlet pipeline at its top. The second inlet pipeline and the first inlet pipeline are connected. The first outlet pipeline is connected to a flushing water pipeline. The resin adsorption tank is fixed to a support base. Support plates are located at its upper and lower ends inside the tank, and water caps are mounted on the support plates. A polymer oleophilic resin is placed between the two support plates to form a polymer oleophilic resin filling area. The oil-water separation tank has a second outlet pipeline at its bottom, which is connected to the first outlet pipeline. The resin adsorption tank is also equipped with differential pressure calculation and heating components. The intermediate storage tank is connected to the bottom of the resin adsorption tank via a pipeline. This polymer resin oil removal device can treat oily water online and has regeneration capabilities.

The invention discloses preparation of an ion imprinted polymer adsorbent and application of the ion imprinted polymer adsorbent in preparation of battery-grade lithium dihydrogen phosphate. The method comprises the following steps: firstly, preparing Fe3O4 coated SiO2 by taking nano Fe3O4 as a magnetic core and tetraethoxysilane, and then carrying out imprinting polymerization on lithium dihydrogen phosphate as a template and a mixed functional monomer under the action of a cross-linking agent to obtain a crude product; and finally, eluting the template to obtain the magnetic ion imprinted polymer adsorbent. The adsorbent can be used for specifically adsorbing lithium dihydrogen phosphate ions from low-concentration lithium, high-impurity brine or a lithium chloride solution, the application process of the adsorbent comprises the steps of adsorption, desorption, evaporation concentration, step-by-step cooling crystallization and drying, battery-grade lithium dihydrogen phosphate with the purity larger than or equal to 99.5% is finally obtained, and the lithium comprehensive yield reaches 90% or above. The process provided by the invention does not need to remove impurities in advance, has high selectivity, can recycle the adsorbent, has the characteristics of simple flow, low energy consumption, environmental friendliness and suitability for large-scale production, and has remarkable environmental protection and economic benefits.

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 application discloses a kind of circulating water aquaculture organic matter and antibiotic targeted adsorption degradation method, belong to aquaculture pond water treatment technical field, steps are as follows: the water outlet of mandarin fish culture pond is introduced into microfilter and retained solid phase pollutants;Water outlet enters raw water pool after buffer tank;Raw water pool water outlet enters biological filter and degrades organic matter;Water outlet flows into molecular imprinting targeted adsorption unit, and antibiotic, hormone are captured by double-targeted molecular imprinting polymer adsorbent;Water outlet enters heterogeneous electrofenton catalytic oxidation unit, and electrolysis is synergized with composite catalyst to catalyze and mineralize pollutant;After water outlet is neutralized pool, into air-lift culture tower reoxygenation and culture beneficial bacteria;After sensor monitoring, water quality reaches standard and then backflow aquaculture pond, otherwise backflow to targeted adsorption unit secondary treatment.The application effectively solves the problems that existing mandarin fish culture circulating water treatment process is difficult to target removal terramycin and other pollutants, which causes accumulation, low adsorption and oxidation efficiency, material easy to inactivate, lack of intelligent control, poor water quality adaptability of effluent.

The invention introduces a resin adsorption recovery system and method for an organic phase in alkali extraction strip liquor, and relates to the technical field of hydrometallurgy organic phase recovery, the resin adsorption recovery system comprises a strip liquor front storage tank, a heating stirrer, a resin adsorption unit, a pure water storage tank, an alcohol storage tank, an organic phase buffer tank, a strip liquor rear storage tank and a detection control unit; the method comprises the following specific steps: S1, pretreatment; s2, removing an organic phase; s3, resin desorption and regeneration; s4, recovering an organic phase; and S5, recycling the resin. The oil removal efficiency is remarkable; high-efficiency organic phase recovery; the resin circularity is high; the process controllability is high; the environment-friendly economy is good.

The present invention provides a method for adsorptive separation of siloxanes. The method of the present invention comprises the steps of adsorbing and optionally desorbing a gas containing siloxanes using a resin adsorbent; wherein the resin adsorbent comprises a modified styrene-divinylbenzene resin having a first nitrogen-containing group free of hydroxyl groups and a second nitrogen-containing group containing hydroxyl groups, wherein the first nitrogen-containing group is selected from one or more of a secondary amine group free of hydroxyl groups, a tertiary amine group free of hydroxyl groups, a quaternary ammonium group free of hydroxyl groups, a nitrogen heterocycle group free of hydroxyl groups, and the second nitrogen-containing group is selected from one or more of a secondary amine group containing hydroxyl groups, a tertiary amine group containing hydroxyl groups, a quaternary ammonium group containing hydroxyl groups. The method of the present invention has a high removal rate for both high and low concentrations of siloxanes.

The invention relates to the technical field of separation and purification of natural functional components, in particular to a resin cross-linking agent, acylthiourea-containing rosin-based adsorption resin and a preparation method and application of the acylthiourea-containing rosin-based adsorption resin. The preparation method of the cross-linking agent comprises the following steps: reacting maleated rosin with SOCl2 to obtain an intermediate product A, reacting the intermediate product A with potassium thiocyanate, reacting the intermediate product B with aniline-o-methylaniline to obtain an intermediate product C, and reacting the intermediate product C with ethyl acetate and hydroxyethyl acrylate to obtain the cross-linking agent NMDMR. The adsorption resin is synthesized by taking NMDMR as a cross-linking agent and diethylbenzene (DVB) and methacrylic acid (MAA) as monomers through a suspension polymerization method. The PNS adsorption capacity of the obtained rosin-based resin is 221.11 mg / g, and the rosin-based resin has good adsorption separation and purification capacity on PNS, and is a renewable and efficient rosin-based resin adsorbent.

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.

The application discloses a kind of recovery processing device of nickel-containing wastewater, comprising: processing component, including processing shell, built-in partition, partition and the inner wall of processing shell are enclosed to form two unit cavities, two mesh plates are distributed in each unit cavity, two liquid inlets and two liquid outlets are provided on processing shell;Liquid inlet component, including two liquid inlet pipes;Liquid outlet component, including two liquid outlet pipes;Switching component is used to control two liquid inlet pipes respectively work in flushing mode and absorption mode, control two liquid outlet pipes respectively work in recovery mode and dilution mode.The recovery processing device of nickel-containing wastewater compared with prior art, by switching component, the working mode of two liquid inlet pipes and two liquid outlet pipes is conveniently and quickly switched, so that two unit cavities always have one to be connected with nickel-containing wastewater for resin adsorption and the remaining one to be connected with flushing liquid for resin regeneration, without adjusting processing shell cover degree, energy consumption is saved and worker burden is reduced.

The invention relates to a purification method of crude glycerine, which comprises the following steps: sequentially carrying out acidification treatment, oil removal treatment, nanofiltration treatment, resin adsorption and membrane distillation on the crude glycerine to obtain a glycerine product, the oil removal treatment is carried out by adopting an oil removal device comprising an oleophylic filter element and a hydrophilic filter element, rapid separation of fatty acid in the crude glycerine is realized, the method is short in time consumption and high in separation efficiency, and the whole operation process can be carried out under a relatively low temperature condition by combining a resin adsorption process and a membrane distillation process; the method not only effectively reduces energy consumption, but also avoids possible polymerization reaction of glycerol in a high-temperature environment; meanwhile, according to the method, effective separation of salt, methanol and water in the crude glycerol can be achieved without dilution treatment on the high-concentration crude glycerol, then a high-purity glycerol product is prepared, the purity of the high-purity glycerol product can reach 99.0% or above, the requirements for environmental protection and energy conservation are met, and the method is suitable for large-scale industrial production and application.

The resin adsorbent, its preparation process, application and treatment method of phenol-containing wastewater relate to the technical field of industrial wastewater treatment. The present application first takes a proper amount of tetrabutyl titanate, vinyl ferrocene, p-hydroxy styrene, divinyl benzene and methyl methacrylate as monomers, adds a proper amount of n-butyllithium as an initiator and n-heptane as a pore-forming agent, stirs and uniformly mixes in a THF system to form an oil phase, then suspends the oil phase in a dispersion medium to carry out suspension polymerization, shapes the oil phase to obtain spherical resin particles, separates the spherical resin particles, removes the pore-forming agent and then vacuum dries to obtain a granular product. The resin adsorbent prepared by the present application can not only achieve ideal treatment effects under acidic and alkaline conditions, but also has shorter phenol removal reaction time, higher efficiency and higher practical application value.

The invention relates to the technical field of material preparation and adsorption separation, and discloses a preparation method and application of a surface molecularly imprinted polymer adsorbent based on myricetin selective separation, different hydrogen bond donors and hydrogen bond acceptor DL-menthol are mixed, and a binary hydrophobic deep eutectic solvent is prepared by a direct heating method; introducing the matrix material as an oil phase into a microemulsion system, and carrying out polymerization reaction on the surface of the matrix material by taking the microemulsion as a polymerization solvent and myricetin as a template molecule; and finally, performing Soxhlet extraction elution, washing and drying to obtain the surface molecularly imprinted polymer adsorbent. The preparation method is simple in process, mild in condition, green and environment-friendly, the raw materials are cheap and easy to obtain, the prepared molecularly imprinted polymer adsorbent is good in stability and uniform in particle size, rapid and efficient selective adsorption of myricetin can be achieved, and the molecularly imprinted polymer adsorbent has wide application prospects in selective separation of myricetin and application of myricetin as an additive in the field of health care products.

This invention relates to a method for constructing and detecting fingerprint spectra of highly water-soluble components in Shenqi Fuzheng Injection. The fingerprint spectra construction method includes the following steps: First, solid-phase extraction of Shenqi Fuzheng Injection is performed using a solid-phase extraction column with a non-polar divinylphenyl neutral polymer adsorbent as the packing material, followed by centrifugation to remove impurities using a suitable solvent; then, a test sample is prepared using amide-bonded hybrid silica gel as the packing material under suitable mobile phase conditions; finally, the test sample is analyzed by high-performance liquid chromatography (HPLC) using amide-bonded ethylene-bridged hybrid silica gel as the packing material under suitable mobile phase conditions to construct the fingerprint spectra. Based on this, the invention achieves the analysis and detection of highly water-soluble components in Shenqi Fuzheng Injection. The method is simple, effective, and provides stable and reproducible analytical results, which is beneficial for monitoring, detecting, and evaluating the quality of highly water-soluble components in the finished Shenqi Fuzheng Injection product.