63 results about "Polymer adsorption" patented technology

The invention belongs to the field of wastewater treatment, and particularly relates to a method for co-treating high-salt degradation-resistant organic wastewater based on electro-polymerization of in-situ activated chlorine free radicals of a penetrating electrode. The method comprises the following steps: by taking a penetrating electrode as an anode, sequentially and alternately arranging the anode and the cathode to form an electrode group, placing the electrode group in a reaction tank, connecting the cathode and the anode of the electrode group with a direct-current power supply, and carrying out electrocatalytic degradation on the high-salt degradation-resistant organic wastewater to be treated in the reaction tank; the transmission type electrode comprises a porous conductive substrate and a metal oxide catalytic layer loaded on the surface of the porous conductive substrate. Under the action of low current, the metal oxide catalytic layer of the anode activates chloride ions in the wastewater in situ to generate chlorine free radicals, and refractory pollutants are degraded through the action of electrocatalytic oxidation; meanwhile, a low-current polymerization reaction is initiated to generate a polymer to adsorb pollutants, so that electrocatalytic oxidation and polymerization synchronous synergistic decontamination is realized.

The invention belongs to the technical field of polymer adsorbent materials, and particularly relates to an ionic polymer adsorbent material containing sulfonic groups and triazinyl, a preparation method and application thereof. A sulfonic acid group is introduced to a molecular structure unit of the nitrogen-rich polymer, and the specific surface area and the ion capacity of the polymer are controlled by adjusting the content of benzidine disulfonic acid; along with the increase of the proportion of benzidine disulfonic acid, the ion capacity of an adsorbent is gradually increased, the specific surface area is gradually reduced, the invention also discloses application of the ionic polymer containing sulfonic acid and triazinyl structure in dye adsorption, and the prepared polymer has high specific surface area, heat-resistant stability, adsorption performance and adsorption regeneration performance.

The invention discloses a cyclic regeneration treatment method of stainless steel pickling waste liquid, which realizes full-flow recycling of the pickling waste liquid by constructing a closed-loop system of pretreatment, adsorption, desorption, recovery, regeneration and circulation. A molecularly imprinted polymer adsorption technology is adopted, targeted capture of Cr < 3 + >, Ni < 2 + > and Fe < 2 + > / 3 < + > is achieved through specific recognition sites, and the bottleneck that a traditional adsorbent is poor in selectivity is broken through; the supercritical CO fluid extraction technology utilizes the characteristics of high diffusivity and low surface tension, efficient desorption of metal ions is achieved under mild conditions, and secondary pollution caused by a traditional organic solvent is avoided. A technical closed loop is formed among the steps through parameter synergy and substance circulation, and finally the dual purposes of full-amount regeneration of the pickling waste liquid and efficient recovery of metal resources are achieved.

The invention relates to the technical field of adsorption materials, and provides an imprinted porous polymer adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking rubidium ions as template ions and nano TiO2 / Fe3O4 as a composite carrier, carrying out silanization surface modification, coordinating crown ether-calixarene as a united functional monomer with the template ions, carrying out polymerization reaction through a cross-linking agent and an initiator to prepare a porous polymer, and eluting the template ions to obtain the imprinted porous polymer adsorption material. The imprinted porous polymer adsorption material provided by the invention can perform efficient selective adsorption on rubidium ions, is high in adsorption capacity and good in stability, and can realize efficient separation and enrichment of rubidium in a complex system. Meanwhile, the adsorption material can be recycled under the action of an external magnetic field, and rapid separation between the adsorbent and an adsorbed solution is achieved.

The invention belongs to the technical field of chemical environmental protection, and particularly relates to a resourceful treatment method for desulfurization and denitrification waste liquid. Comprising the following steps: mixing the desulfurization and denitrification waste liquid with an oxidizing agent, and adjusting the pH value to 5-6, so that part of organic matters in the desulfurization and denitrification waste liquid are oxidized, and part of metal ions form metal sulfate precipitates, thereby obtaining primary treatment waste liquid; mixing the primary treatment waste liquid with a polymer, and adjusting the pH value to 8-12, so that residual metal ions in the primary treatment waste liquid form hydroxide precipitates; meanwhile, the polymer adsorbs suspended solids in the primary treatment waste liquid and gathers into large-particle flocs, and secondary treatment waste liquid is obtained; and carrying out solid-liquid separation on the secondary treatment waste liquid to obtain solid-liquid and liquid as raw materials for subsequent resource utilization. Through cooperative treatment, high salt, high suspended solids and high COD in the desulfurization and denitrification waste liquid are efficiently removed, so that the effluent meets the reuse water inlet requirement, and the method is an environment-friendly treatment 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.

The present application relates to the technical field of IPDI synthesis, and particularly discloses a method for removing residual n-butanol in tail gas in a process for synthesizing isophorone diaminon-butyl carbamate by using a urea method, wherein the tail gas is obtained from: ammonia-containing tail gas obtained in the process for synthesizing isophorone diaminon-butyl carbamate by using the urea method, and tail gas obtained after an ammonium carbamate removal process; and the method for removing the residual n-butanol in the tail gas comprises the following steps: cooling the tail gas to 15-25 DEG C, and then adsorbing the n-butanol in the tail gas by using an adsorbent; and the adsorbent comprises molecular sieves, activated carbon and nano-polymer adsorption resin. By using the method, the content of n-butanol in the tail gas of isophorone diaminon-butyl carbamate is far lower than the industrial emission standard, no secondary pollution is caused, and the system safety is high.

A method of making a water filter comprising: preparing a solution comprising a polymer, an adsorbent, and a first solvent, the polymer being soluble in the first solvent; casting the solution onto a substrate to form a thin film; dissolving the first solvent in a second solvent to precipitate a polymer from the solution; removing the film from the substrate; and winding the film to form a cylindrical filter.

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 belongs to the technical field of preparation of ion identification, adsorption and separation functional materials, and discloses a preparation method and adsorption application of a functional bowl-shaped structure inherent microporous polymer adsorbent AO-PIM-1 (at) mSiO2. The adsorbent comprises a mesoporous silica mSiO2 hard template and an inherent microporous polymer PIM-1 self-polymerized on the surface of the mesoporous silica mSiO2 hard template, and is prepared through amidoxime functionalization. According to the preparation method, an mSiO2 hard template is adopted, PIM-1 is self-polymerized on bowl-shaped mSiO2, and then amidoxime functionalization synthesis is carried out. The adsorbent has a hierarchical porous structure, a high specific surface area and abundant amidoxime functional groups, and shows strong affinity and high selective adsorption performance on uranyl ions UO2 < 2 + >. Compared with the prior art, the adsorbent provided by the invention not only solves the problems of low selectivity, structural collapse or efficiency reduction after recycling and the like of a porous polymer adsorbent, but also provides an efficient new strategy for the fields of uranium extraction and separation from seawater due to excellent structural stability and renewability of the adsorbent.

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.

The invention provides a hierarchical pore imidazolyl cationic polymer adsorption material capable of adsorbing technetium or rhenium and a rapid preparation method thereof. Firstly, 3-chloropropylamine hydrochloride and 1-aminopropyl imidazole are selected to be subjected to quaternization reaction to synthesize ionic liquid, then the ionic liquid and terephthalaldehyde are subjected to ammonia-aldehyde condensation reaction by adopting a cetyltrimethylammonium bromide (CTAB)-assisted evaporation induced self-assembly method, and the covalent organic polymer (HP1DNH2) with a hierarchical pore structure can be constructed by reacting in air for 1 hour. Compared with a covalent organic polymer (1DNH2) prepared without the assistance of CTAB, the saturated adsorption capacity is increased from 598.2 mg g <-1 > to 690.0 mg g <-1 >, which shows that the hierarchical pore structure is more beneficial to the adsorption reaction. The method has practical application value for effectively recovering < 99Tc > from nuclear waste liquid and radioactive sewage.

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 belongs to the technical field of water treatment, and discloses a closed water corrosion inhibitor, which is prepared from methylbenzotriazole, polyamino polyether methylene phosphonic acid, sodium polyepoxysuccinate and an acrylic acid-hydroxypropyl acrylate copolymer in a synergistic manner, and through a double protection mechanism of inner-layer BTA chemical complexing passivation and outer-layer polymer adsorption, the corrosion inhibitor can effectively inhibit the corrosion of closed water. The corrosion rate of the low-carbon steel can be reduced in chilled water, hot water, organic anti-freezing solution and high-concentration calcium chloride solution by adding only 200 ppm of the corrosion inhibitor. Compared with the prior art, the use amount of raw materials is obviously reduced, various media are compatible, high-toxicity or high-cost components of dichrome and molybdenum are abandoned, and both environmental protection and economic benefit improvement are achieved. The used raw materials are industrial common chemicals, the preparation process is simple, large-scale production is easy, and the method has excellent industrial applicability.

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 present application provides an air purification filter screen. The air purification filter screen includes a HEPA filter screen and a polymer adsorption filter screen. The polymer adsorption filter screen is formed by stacking multiple layers of grids along its thickness direction; the grids of each layer of grid include a first grid filled with an adsorption material and a second grid not filled with an adsorption material. The grid filling ensures the filling uniformity while ensuring the porosity of each grid, thereby playing a role in reducing the pressure drop.

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.