463results about "Dialysis" patented technology

The invention discloses an ion exchange membrane based on an intrinsic microporous polymer, and a preparation method and application thereof, and belongs to the technical field of high polymer materials. According to the application, 1, 3, 5-tri (4-aminophenyl) benzene (TAPB) and dimethyl formal are taken as polymeric monomers, a polymer with intrinsic sub-nano micropores and a corresponding homogeneous ion exchange membrane are prepared by utilizing the structural characteristics of rigidity and distortion of the TAPB, an ion transmission channel is formed by a unique micropore structure, and the sub-nano micropores have a size screening effect, so that the ion exchange membrane can be used for preparing the ion exchange membrane. The selective separation of monovalent / multivalent anions can be realized; after quaternization treatment is carried out on the membrane and a positively charged group is introduced, the positively charged group has a strong electrostatic repulsion effect, and selective separation of monovalent / multivalent cations can be realized, so that the polymer ion exchange membrane disclosed by the invention can be simultaneously applied to an acid-base recovery process, and has the characteristics of high selectivity, high permeation flux and stable long-term operation.

Apparatuses and methods for extracting desired chemical species including, without limitation, lithium, specific lithium species, and / or other chemical compounds from input flows in a modular unit. The input flows may be raw materials in which lithium metal and / or lithium species are dissolved and / or extracted. The apparatuses and methods may include daisy chain flow through separate tanks, a column array, and / or combinations thereof.

The invention provides a COF (at) POC composite film and a preparation method and application thereof. The preparation method comprises the following steps: a) dissolving a COF aldehyde monomer and a POC aldehyde monomer in an organic solvent to obtain a first solution; meanwhile, dissolving a COF amine monomer and a POC amine monomer in an organic solvent to obtain a second solution; b) mixing the first solution, the second solution and an acetic acid solution to obtain a homogeneous membrane casting solution; and c) dispensing the homogeneous casting membrane liquid, and reacting to obtain the COF (at) POC composite membrane. Compared with the prior art, the preparation method provided by the invention has the advantages that specific raw materials are matched with specific process steps and conditions, the overall better interaction is realized, and the prepared COF-POC composite membrane is good in mechanical strength and has high ion flux and excellent ion selectivity for monovalent and divalent ion separation; the method has a wide application prospect in the fields of seawater desalination, salt lake lithium extraction, drug separation and the like.

The present disclosure is related to an apparatus and system for synthesizing and administering particle-based therapeutics at the point-of-care. The apparatus includes a first chamber for receiving a first solution including lipids in a first solvent, a second chamber for receiving a second solution including nucleic acids in a second solvent, a mixing channel in communication with the first chamber and the second chamber, and a delivery system in communication with the to the mixing channel. The first solution in the first chamber and the second solution in the second chamber can be introduced into the mixing channel. The particle-based delivery system form in the mixing channel and the nucleic acids adhere to the particles. The formulated particle-based therapeutics are passed through a delivery system to a subject for administration.

Methods for coupling ligands to composite materials are disclosed. A covalent bond is formed between the functionalized composite material and the ligand as the ligand solution flows through or across the composite material. The composite material can be used as a chromatographic separation medium.

A method of separating lithium (Li) from aluminum (Al) includes: obtaining an aqueous feed solution containing an acid, Li, and Al; providing a membrane module including a plurality of hollow fibers that are hydrophobic and include a porous sidewall defining a lumen side spaced apart from a shell side; wetting the porous sidewall of the plurality of hollow fibers with an organic phase including a cationic extractant and an organic solvent such that the organic phase is immobilized in the porous sidewall; performing membrane solvent extraction by passing the feed solution along one of the lumen side or the shell side of the plurality of hollow fibers and simultaneously passing a strip solution along the other of the lumen side or the shell side of the plurality of hollow fibers. The cationic extractant in the porous sidewall continuously extracts Al from the feed solution while substantially rejecting Li for recovery.

The invention discloses a hemodialysis membrane with a self-anticoagulation function and a preparation method of the hemodialysis membrane. The hemodialysis membrane with the self-anticoagulation function is obtained by modifying natural polymer fibrin, polydopamine and a sulfonic acid type polymer solution. The hemodialysis membrane is any one or more of a polysulfone membrane, a polyether sulfone membrane, a polyvinylidene fluoride membrane, a polymethyl methacrylate membrane, a polyacrylonitrile membrane, a polyamide membrane, a polyvinyl alcohol membrane, a cellulose acetate membrane and a polypropylene membrane. The invention is used for treating acute and chronic kidney diseases, has good biocompatibility, and shows good blood compatibility in the aspects of inhibiting protein adsorption, platelet adsorption and red blood cell adsorption, reducing hemolysis rate, prolonging blood coagulation time and the like. And the risk of thrombosis caused by improper use of an anticoagulant in a continuous anticoagulation treatment process can be effectively avoided, and the living quality and the survival time of a hemodialysis patient are effectively improved and prolonged.

The invention discloses a polyether sulfone hollow fiber blend membrane with polydopamine attached to the inner surface and a preparation method of the polyether sulfone hollow fiber blend membrane. The polyether sulfone hollow fiber blend membrane comprises the following raw material components: 10-20 wt% of polyether sulfone, 1-3 wt% of polydopamine, 5-10 wt% of a pore-foaming agent and 60-85 wt% of an organic solvent. The outer diameter of the hollow fiber membrane is 0.1-50 mm, the inner diameter of the hollow fiber membrane is 0.1-50 mm, the micropore diameter of the hollow fiber membrane is 0.01 mu m-1mm, and the porosity of the hollow fiber membrane is 50-95%; the invention has the following beneficial effects: the film can resist steam sterilization; and moreover, good hydrophilicity is achieved, and waste can be biodegraded.

The invention discloses a purification method of a conductive carrier for electrocatalytic reduction of carbon dioxide, which comprises the following steps: placing a conductive carrier crude product prepared by a liquid phase oxidation method in a dialysis bag, dialyzing in deionized water, and drying to obtain the conductive carrier for electrocatalytic reduction of carbon dioxide. According to the conductive carrier prepared by the preparation method, metal salts and anions on the surface of the carrier are removed through dialysis by adopting a dialysis bag, so that the obtained conductive carrier not only has a relatively large specific surface area and can load more metal active sites, but also can provide relatively high electron conduction efficiency; reducing the conduction resistance at the electrode-electrolyte interface; and during subsequent preparation of the catalyst, metal nanoparticles, especially copper-based nanoparticles, are easily loaded, so that the electrode catalyst for preparing ethylene through electrolytic reduction of carbon dioxide is obtained.

The utility model provides dialysis and separation equipment for umbilical cord blood. The dialysis and separation equipment comprises a first separation plate, a second separation plate, a bag and dredging units, wherein the first separation plate and the second separation plate are composed of filter membranes and impermeable membranes, the bag is made of flexible materials, and the dredging units are arranged on the two sides of the bag and used for squeezing. The filter membrane and the impermeable membrane are tightly combined to form an outlet, and the bag is divided into three cavities which are respectively used for treating umbilical cord blood and controlling liquid flow through a catheter and a valve. The dredging unit periodically extrudes the bag through the extrusion part and the control part, so that the filter membrane is prevented from being blocked. The equipment can effectively separate blood components through the matching of the filter membranes with different pore diameters and functions, and realizes a reliable, effective, simple and economical umbilical cord blood dialysis and separation mode.

Dialysis systems and methods are described which can include a number of features. The dialysis systems described can be to provide dialysis therapy to a patient in the comfort of their own home. The dialysis system can be configured to prepare purified water from a tap water source in real-time that is used for creating a dialysate solution. The dialysis systems described also include features that make it easy for a patient to self-administer therapy.

The invention discloses an antibacterial nanofiber hemodialysis membrane and a preparation method thereof, and relates to the technical field of dialysis membranes, and the preparation method comprises the following steps: mixing a chitosan derivative, heparin, dopamine, an unsaturated monomer and an initiator in a DMF / phosphate buffer mixed solution to obtain a surface treating agent; taking the polyethersulfone nanofiber membrane as a supporting layer, dipping in a surface treating agent, and performing UV irradiation to form a functional layer, thereby obtaining the dialysis membrane. The preparation method comprises the following steps: compounding phenanthroline cerium triacrylate hybridized CeO2 with N-vinyl pyrrolidone, sodium p-styrenesulfonate and lauryl methacrylate to obtain an unsaturated monomer, compounding the unsaturated monomer with a chitosan derivative, heparin and dopamine to prepare a surface treating agent, impregnating a polyether sulfone nanofiber membrane, and carrying out irradiation curing to form a functional layer. The prepared hemodialysis membrane has efficient anticoagulation and broad-spectrum antibacterial properties, high permeability, low protein adsorbability and long-term stability.

The invention provides a resource recycling method of ammonium-containing waste sulfuric acid, which comprises the following steps: (1) respectively introducing a solvent and ammonium-containing waste sulfuric acid into two sides of a dialysis membrane for diffusion dialysis treatment, and respectively obtaining a sulfuric acid solution and an acidic ammonium sulfate solution on two sides of the dialysis membrane; and (2) carrying out bipolar membrane electrolysis treatment on the acidic ammonium sulfate solution to obtain ammonia water and ammonium-containing sulfuric acid. According to the method disclosed by the invention, sulfuric acid and ammonium ions (converted into ammonia water) in the ammonium-containing waste sulfuric acid can be efficiently and greenly recovered, the obtained ammonium-containing sulfuric acid can also be repeatedly recovered, and resource recovery of the ammonium-containing waste sulfuric acid is realized under the condition of ensuring low cost.

A peritoneal dialysis (“PD”) system (10) includes a PD machine (20); a patient line (50) extending from the PD machine (20); and a filter set (100) in fluid communication with the patient line (50), the filter set (100) including a filter membrane (120, such as a sterilizing grade or a bacteria reduction filter membrane) positioned and arranged such that fresh PD fluid flows through the filter membrane (120) into a filtered fluid compartment (106f), wherein the filtered fluid compartment (106f) includes an outlet (106t) to a port (106p), and wherein the port (106p) is in fluid communication with a used PD fluid tube (106u) positioned and arranged to carry used PD fluid past the filter membrane (120) without contacting the filter membrane (120). A method for priming filter set (100) is also disclosed.

The invention discloses a preparation method of a covalent organic framework membrane based on interlayer modification. The preparation method comprises the steps of in-situ growth of a COFs layer, COFs modification, heat treatment, chemical crosslinking and solvent activation. According to the method, COFs are synthesized by only adopting an organic phase solution instead of adopting an aqueous phase solution, and acyl chloride or carboxylic acid is used for modifying the COFs to repair defects in a COFs layer and reduce the pore diameter of the COFs, so that the separation performance of the composite membrane is remarkably improved. The method is small in material consumption, simple in process, wide in application range, easy to amplify and realize industrial production, and has a good application prospect in the field of organic solvent system separation.

The application relates to the technical field of plasma separation, and discloses a water injection device of a plasma component separator, which comprises a bottom plate, a fixing mechanism arranged on the bottom plate, a fixed end and a moving end oppositely arranged in the fixing mechanism, the moving end being movable towards the fixed end to fix the plasma component separator between the fixed end and the moving end, one end of the moving end abutting against the plasma component separator being provided with a sealed suction chamber, the suction chamber being communicated with a fiber membrane of the plasma component separator, a vacuum pump joint being arranged on the moving end and communicated with the suction chamber, the vacuum pump joint being connected with a vacuum pump, a water pipe joint being arranged on the plasma component separator, one end of the water pipe joint being connected with a water inlet pipe, and the other end of the water pipe joint being communicated with a space at the end of the fiber membrane away from the suction chamber to inject water into the space, and the vacuum pump joint can suck water from one side of the fiber membrane into the suction chamber to complete wetting of the fiber membrane, so that a subsequent air detection process can be normally carried out, and the accuracy of the air detection result is ensured.

A method is proposed for testing the integrity of a liquid capillary filter, in particular a capillary dialyser (1), constructed from a multiplicity of capillaries (15) enclosed by a membrane, said method having the steps of: allowing a liquid to flow through the inner or outer face of the capillaries (15), applying a gas to the outer or inner face of the capillaries (15), wherein the gas has a higher pressure than the liquid, and determining a quantity of the gas that passes into the liquid through leaks in the membrane. The method is characterized in that the liquid, after flowing through the liquid capillary filter (1), is conveyed through a bubble trap (30), and in that a gas volume (41) accumulating in the bubble trap (30) during a predefined or predefinable reference period is determined. An installation for testing the integrity of a liquid capillary filter (1) is also proposed.

A method for synthesizing a hydrophilic graphene-modified polyurethane foam membrane, is described. The method includes functionalizing graphene oxide particles with tartronic acid to form a functionalized product having a hydrophilic functional group; and reacting the functionalized product with a polyurethane to form the hydrophilic graphene-modified polyurethane foam membrane. The hydrophilic graphene-modified polyurethane foam membrane has a water adsorption capacity of at least 20 g / g. The hydrophilic graphene-modified polyurethane foam membrane is adapted for a use selected from the use group consisting of oil and water separation, water treatment, desalination, and pharmaceutical filtration.

Filtration membrane with improved mechanical stability and increased resistance to pressure is provided. The filtration membrane is useful for in vivo implantable filtration devices, such as, an artificial kidney. In vivo implantable filtration devices are also provided.

To provide biological fluid purification using a biocompatible membrane.SOLUTION: An apparatus for integrated adaptive biological blood purification includes a function unit. The function unit is provided with: a membrane including a pipe surface and a filtration surface; a blood vessel channel system which is adhered to the blood vessel surface of the membrane and includes a first lumen space in fluid communication with the blood vessel surface of the membrane, a first end configured to be in fluid communication with a fluid supply part and to contact the same, and a second end configured to be in fluid communication with a filtration fluid outlet and to contact the same; and a filtration channel system which is adhered to the filtration surface of the membrane and includes a second lumen space in fluid communication with the filtration surface of the membrane and a third end configured to be in fluid communication with a filtrate outlet and to contact the same.SELECTED DRAWING: Figure 11

The invention discloses a roll type diffusion dialysis membrane assembly and a preparation method thereof. The roll type diffusion dialysis membrane assembly comprises a cylinder body and a U-shaped pipe, the upper end of the straight pipe part of the U-shaped pipe is respectively connected with diffusion liquid and dialysis liquid inlet and outlet pipes; wherein an ion exchange membrane is arranged between a pair of diagonal straight pipe parts, two sides of the ion exchange membrane are respectively provided with a flow channel separation net, and the ion exchange membrane and the flow channel separation nets are tightly attached to each other to be spirally rolled into a barrel by taking the pair of diagonal straight pipe parts as the axis; the wound tail ends of the ion exchange membrane and the runner separation net are respectively fixed on the other pair of straight pipe parts; a space supported by the flow channel separation net forms a fluid channel and is always positioned on two sides of the ion exchange membrane, one side forms a diffusion liquid flow channel and is communicated with a pair of diffusion liquid inlet and outlet connecting pipes, and the other side forms a dialysate flow channel and is communicated with a pair of dialysate inlet and outlet connecting pipes; according to the invention, the problems of difficulty in arranging a liquid inlet / outlet and low mass transfer efficiency when a plurality of membrane modules with higher integration degree are used for common treatment are solved.

The utility model relates to the technical field of analysis and detection, and particularly discloses a batch automatic filtering device adaptive to laboratory liquid samples, which comprises a filter, a suction filtration system and a control system, the filter comprises a filter upper part and a filter lower part, the filter upper part is connected with a filter upper part guide pipe, and the suction filtration system comprises a suction filtration box and a suction filtration pump. The suction filtration box comprises a suction filtration box cover plate and a suction filtration box body, a plurality of filter insertion holes are formed in the suction filtration box cover plate, connecting parts matched with the filter insertion holes are connected below the lower part of the filter, the lower part of the filter is connected with a filter lower part filter pipe, and a filtrate receiving container is arranged below the filter lower part filter pipe. According to the utility model, batch automatic filtration can be carried out, the volume required by analysis and test can be completed at one time, the filter can be reused, and the filtration of mass water quality samples in laboratories, especially geology laboratories of territorial systems, can be completed, so that the filtration efficiency is greatly improved, the labor intensity is reduced, and the production cost is reduced.

The utility model discloses an auxiliary device suitable for low-temperature circulation dynamic dialysis, and relates to the technical field of dialysis equipment, the auxiliary device comprises a stirring shaft, a plurality of supporting rod groups are arranged on the stirring shaft, each supporting rod group comprises a plurality of supporting rods, the supporting rods are arranged on the peripheral side face of the stirring shaft in an array mode, and the supporting rods are rotatably connected with the stirring shaft; and the plurality of hollow cages are arranged on the supporting rod in an array manner. According to the auxiliary device suitable for low-temperature circulation dynamic dialysis, the technical problems that according to an existing dialysis device, multiple samples are subjected to partition dialysis at the same time, a large number of samples are likely to be mixed and cannot be distinguished are solved, different dialysis bags are placed in the corresponding hollow cages, the multiple samples can be independently partitioned and subjected to dynamic dialysis at the same time, and the dialysis efficiency is improved. The risk of cross contamination caused by sample mixing and sample liquid leakage is effectively avoided, the movement range of the dialysis bag is limited through the hollowed-out cage, the dialysis bag is prevented from cracking in the dialysis process, and it is ensured that an experiment is conducted smoothly.

The inline liquid-degasser (degasser) includes a gassed tube and a degassed tube with openings formed through the respective walls. The degasser also includes a baffle between the gassed tube and the degassed tube that is configured to seal an interior of the gassed tube from an interior of the degassed tube. The degasser further includes a degassing chamber surrounding an exterior of the gassed tube, where the openings of the gassed tube communicate therewith. The degasser also includes a vacuum chamber disposed adjacent to the degassing chamber and a vacuum port disposed through a wall of the vacuum chamber. The degasser further includes a plurality of hollow fibers with open ends. The hollow fibers are formed into loop portions and crown portions, where the loop portions surround the gassed tube in the degassing chamber and the crown portions extend to the vacuum chamber.

The invention discloses a membrane separation material for purifying a sucralose-6-acetate alcoholysis product. The technology comprises three main parts, namely MOF (Metal Organic Framework) synthesis, membrane preparation and membrane dialysis separation. The method comprises the following steps: firstly, taking gamma-cyclodextrin and sodium hydroxide as raw materials, carrying out morphology adjustment by using hexadecyl trimethyl ammonium bromide, and synthesizing Na-gamma-CD-MOF by using a solvent method; then mixing the MOF material with N, N-dimethylacetamide and polyvinylidene fluoride in proportion to prepare a membrane casting solution, and preparing the membrane casting solution into a composite membrane material by using a phase inversion method; finally, the membrane is placed in a liquid phase dialysis device, dialysis separation is conducted on all components in the sucralose-6-acetate alcoholysis product, and efficient separation of impurities and efficient purification of the main product sucralose are achieved. The advantages of the membrane separation technology are fully utilized, conditions are mild, the device is simple, operation is convenient, and the method has good application prospects.

To provide a highly durable ion exchange membrane, a method for manufacturing the same, an electrodialyzer using the ion exchange membrane, a diffusion dialyzer, and a water electrolysis device.SOLUTION: Provided is an ion exchange membrane. This ion exchange membrane comprises: a base material; and an ion exchange resin carried on the base material. The base material includes a core-sheath fiber. The core-sheath fiber includes a core that includes a first resin, and a sheath that surrounds the core and includes a second resin. The crystallinity of the second resin is lower than that of the first resin.SELECTED DRAWING: Figure 1

The invention relates to the technical field of boron carbide production, in particular to boron carbide smelting off-gas boron gangue recovery equipment and a recovery method thereof.The boron carbide smelting off-gas boron gangue recovery equipment comprises a horizontal tank body, a separation cavity and a dissolution cavity are formed in the horizontal tank body; a flue gas inlet is formed in the top of the separation cavity, a collecting tank and an isolation cover are arranged at the bottom of the separation cavity, and after settling separation of flue gas and large-particle impurities is conducted in the separation cavity, the isolation cover covers the collecting tank; a dialysis membrane is arranged at a liquid outlet of the dissolving cavity; the centrifugal pump is used for sucking a boron gangue solution for dissolving flue gas in the separation cavity into the dissolving cavity; the filter pressing piece is arranged in the dissolving cavity, and when the filter pressing piece moves towards the dialysis membrane, the boron gangue solution is subjected to filter pressing and dialysis to pass through the dialysis membrane, so that the boron gangue solution is separated from the small-particle impurities. Settling separation and filter pressing dialysis of impurities in the flue gas are sequentially carried out in the separation cavity and the dissolving cavity, the boron gangue solution with the high purity is obtained, the high boron gangue obtaining rate is achieved, environmental pollution caused by boron gangue discharging is avoided, and the boron gangue recycling benefit is improved.

The purpose of the present invention is to provide a dialysis membrane capable of removing CPPs while suppressing a reduction in minerals and capable of being suitably used for blood processing including the adsorption of CPPs. The present invention pertains to a dialysis membrane comprising a hollow fiber membrane or a semipermeable membrane which is a flat membrane, wherein said dialysis membrane is used for blood processing including the adsorption of calciprotein particles which are complexes of calcium phosphate and proteins, and has a compound (A) in which a film-forming polymer constituting the semipermeable membrane has, in a portion other than terminals of a main chain, at least one electron-donating group selected from the group consisting of an amino group, a carboxy group, a phosphoric acid group, a phosphono group, a phosphino group, and a thiol group, and / or has, separately from the semipermeable membrane, at least one electron-donating group selected from the group consisting of an amino group, a carboxy group, a phosphoric acid group, a phosphono group, a phosphino group, and a thiol group.

Method for vacuum drying of products, in particular membrane filters (12), such as dialyzers, especially after washing or functional testing, using microwave energy and an atmospheric multi-mode microwave chamber (14) and a sealed, microwave-transparent vacuum housing (26), for example made of polytetrafluoroethylene, PTFE, in the multi-mode microwave chamber (14), wherein the vacuum housing (26) has at least two separate compartments (28) and a vacuum sensor (30) in each of the compartments (28) for individually monitoring a vacuum in the respective compartment (28), the method comprising: - Arranging at least one product in each of the at least two compartments (28) and sealing the at least two compartments (28), - Creating a vacuum in the sealed compartments (28), - Closing the multi-mode microwave chamber (14), - Generating and coupling microwaves into the multi-mode microwave chamber (14), - Measurement of individual vacuum pressures (P1, P2, P3, P4, P5) in the at least two compartments (28) using the vacuum sensors (30), and - Control of microwave vacuum drying depending on the individually measured vacuum pressures (P1, P2, P3, P4, P5) in the at least two compartments (28).

The utility model relates to the technical field of water treatment, in particular to a dialysis device for wastewater treatment, which comprises an assembly seat, at least one group of diffusion dialysis units, a liquid distribution plate and a temperature distribution part, the diffusion dialysis units are equidistantly arranged in the assembly seat, the liquid distribution plate is connected with the diffusion dialysis units, and the temperature distribution part is connected with the assembly seat. And the temperature distribution part is arranged on the diffusion dialysis unit. By means of the assembly composed of the assembly base, the diffusion dialysis unit, the liquid preparation plate and the temperature preparation part, treatment of waste water containing waste alkali liquid is achieved, a dialysis mechanism is provided, the diffusion rate of ions in the waste alkali liquid is increased by increasing the temperature in the diffusion dialysis unit and increasing the thermal movement speed of molecules, the ions are helped to pass through an ion exchange membrane more quickly, and the ion exchange efficiency is improved. The diffusion dialysis efficiency is improved.