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30results about How to "No change in adsorption" patented technology
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Organic waste gas adsorbent and preparation method thereof
InactiveCN103285813AImprove lipophilicityImprove hydrophobicityOther chemical processesDispersed particle separationMolecular sieveSorbent
The invention discloses an organic waste gas adsorbent. The adsorbent is prepared from the following components in percentage by weight: 80 to 90 percent of all-silicon molecular sieve, 8 to 15 percent of a natural mineral porous material, 2 to 5 percent of a nano-graphite material, as well as, based on the total weight of the three components, 1 to 5 percent of a pore-enlarging agent and 1 to 5 percent of peptizer. The invention discloses a method for preparing the organic waste gas adsorbent. The adsorbent prepared by the method is good in adsorption performance and durable in abrasion and large in treatment area.
Owner:程志林
Preparation method of modified walnut shell charcoal
InactiveCN109759017ASolve processing problemsImprove adsorption capacityCarbon compoundsOther chemical processesWalnut NutWastewater
The invention provides a preparation method of modified walnut shell charcoal. According to the method, walnut shells, strong acid and strong alkali are used as raw materials; the steps of walnut shell pretreatment, oxygen isolation carbonization, acid modification, alkali modification, washing drying and the like are performed. The raw material sources are walnut shells; the raw materials are simple and can be easily obtained; the waste materials are changed into valuable materials; the problem of waste treatment of the walnut shells can be solved; the invention also provides an active carbonmaterial with high adsorption quantity on Cu<2+> and Cr<3+> in wastewater; the removal rate on single Cu<2+> solution in the wastewater can reach 98.1 percent; the removal rate on composite Cu<2+> solution can reach 98.1 percent; the removal rate on single Cr<3+> in the wastewater is 94.1 percent; the removal rate on composite Cr<3+> solution is 89.1 percent; the adsorption performance is good; the material stability is high; after the placement for one year under the normal temperature conditions, the adsorption performance on Cu<2+> and Cr<3+> is unchanged; the preparation method is simple;the implementation is easy; the method is worthy of being popularized and applied in the market.
Owner:CHONGQING UNIV OF ARTS & SCI
Cationic organic polymer as well as preparation method and application thereof
ActiveCN108102092AHigh yieldThe synthesis method is simpleIon-exchange process apparatusOther chemical processesPerrhenic acidHalohydrocarbon
The invention relates to a cationic organic polymer which is obtained by performing a polymerization reaction on a compound containing imidazole groups or pyridine groups and halohydrocarbon in an organic solvent at the temperature of 0-300 DEG C for 0-24h, wherein the ratio of the imidazole or pyridine groups to halogens is 1: 1; the compound containing the imidazole groups or pyridine groups isselected from the following chemical formulas; R1 is an imidazole group or pyridine group, and m, n, p and r are independently selected from integers that are greater than 0; the halohydrocarbon is selected from the following chemical formulas; X is independently selected from F, Cl, Br or I, and m is any integer which is 0 or greater. The invention also discloses application of the cationic organic polymer prepared by the preparation method, which serves as an HTcO4 radical and / or a perrhenic acid radical, in an adsorbent.
Owner:SUZHOU UNIV
Salicyhydroximic acid type chelate resin and preparation method thereof
InactiveCN103087231ASimple preparation processThe preparation process is simple and controllableOther chemical processesWater contaminantsMicrosphereChelating resin
The invention belongs to the field of chelate resin materials and provides a salicyhydroximic acid type chelate resin and a preparation method thereof for solving the problem that the existing hydroximic acid can not be repeatedly used in sewage treatment. The preparation method comprises that a ligand salicyhydroximic acid is bonded to the surface of a chloromethylated polystyrene microsphere to obtain the salicyhydroximic acid type chelate resin, and bonding quantity of the ligand salicyhydroximic acid is 0.38-0.43g / g. The salicyhydroximic acid type chelate resin has strong coordination complexing power to metal ions, can realize enrichment recycling of multiple precious metal ions, especially has excellent adsorbability and selectivity to heavy metal ions such as copper, nickel, lead, iron, zinc and chromium and can be effectively applied to treatment of sewage in the industries such as electroplating, electronics and heavy metals and extraction of rare earth minerals; besides, the bonding quantity of salicyhydroximic acid is high, a synthetic process is simple, conditions are mild, time is short, and synthesis is easy to control; and the chelate resin provided by the invention is convenient to use and easy to separate and recycle and can be recycled for 10 times while the adsorbability is basically constant.
Owner:ZHONGBEI UNIV
Papermaking wastewater treatment process
ActiveCN108328864AEfficient removalPromote reductive transformationWater/sewage treatment by irradiationSpecific water treatment objectivesActivated carbonPapermaking
The invention belongs to the technical field of papermaking industry and specifically relates to a papermaking wastewater treatment process. Papermaking wastewater is treated by using a coagulation-microelectrolysis-two-stage UASB-biological contact oxidation-ion exchange-activated carbon-ultraviolet disinfection combined process, so that refractory organic matters, suspended matters, SS and microorganisms in the treated papermaking wastewater are efficiently removed. Meanwhile, resin is rapidly regenerated within a short period by using a regeneration solution provided by the invention, and the attenuation of the resin can be delayed due to the addition of sophorolipids and trehalose ester in the regeneration solution, so that the service life of the resin is greatly prolonged, the wastewater decoloration efficiency is increased, and the operation cost is reduced.
Owner:WUHAN CHENMING HANYANG PAPER
Preparation method of magnetic melamine hydrophobic oleophylic sponge
InactiveCN111057267AImprove performanceEasy to prepareOther chemical processesAlkali metal oxides/hydroxidesPolymer scienceNanoparticle
The invention discloses a preparation method of magnetic melamine hydrophobic oleophylic sponge. The method comprises the steps: immersing melamine sponge in a toluene solution of a silane coupling agent with a mass fraction of 0.5-1%, after complete immersion, volatilizing a solvent, drying, and carrying out ultrasonic treatment in an ethanol dispersion liquid of nano Fe3O4 and drying to obtain the magnetic melamine hydrophobic oleophylic sponge. According to the invention, the silane coupling agent modified melamine sponge is prepared by adopting an impregnation method; the magnetic melaminehydrophobic oleophylic sponge is prepared through the ultrasonic method, the good performance of the adsorption material is guaranteed by fully utilizing the porous structure of the melamine sponge,and a sponge body is coated with the magnetic material in combination with the ultrasonic technology, so that the action between nano particles is weakened, and the action between the particles and the sponge body is enhanced. The magnetic melamine hydrophobic oleophylic sponge can be recycled through magnetic force, and the adsorption performance of sponge oil after multiple times of circulationis almost kept unchanged.
Owner:NANJING UNIV OF SCI & TECH
Multifunctional anti toxic tapestry
InactiveCN101225579ANo change in adsorptionImprove adsorption capacityLayered productsOrnamental structuresFiberYarn
The invention relates to a multifunctional antigas tapestry, which is mainly used to overcome the defect of the prior common tapestry with only appreciation of art and without absorption function for noxious gas and radiation ray. The multifunctional antigas tapestry is characterized in that the tapestry can be made by taking the activated carbon fiber yarn as raw material and using the weaving method of common carpet; or taking the activated carbon fiber felt as raw material and coating a layer of cotton or silk fabric with flare or other artistic effect on the felt surface (the felt surface must be polished before processing) based on the coating technique; or taking the activated carbon fiber fabric as raw material and printing the various decorative textures and patterns on the fabric surface after sewing with stacked layers; or taking the yarn mixed with activated carbon short fiber and terylene short fiber as raw material and using the weaving method of common carpet. The multifunctional antigas tapestry has the advantages that the tapestry can adsorb the toxic gas and the harmful radiation ray emitted by the decorative materials in living room, so the tapestry has not only the appreciation of art but also the specific environmental function.
Owner:SHENGHONG GRP CO LTD
Amino acid functionalized metal-organic framework material and preparation method and application thereof
ActiveCN110215899ANo change in adsorptionHigh adsorption rateOther chemical processesWater/sewage treatment by sorptionSorbentMetal-organic framework
The invention discloses an amino acid functionalized metal-organic framework material. The material includes an MOF-808 matrix and an amino acid ligand introduced at a node thereof. The modified metal-organic framework composite material can be used as an adsorbent, has a high adsorption rate for palladium ions and good selectivity to ions in solutions, and can achieve substantially unchanged adsorption performance after a plurality of times of repeated use. A preparation method of the material is also disclosed. A modifying raw material adopted in the method is amino acids which are rich in source, and a preparation process is extremely simple. The modified metal-organic framework composite material has a large potential in the field of palladium ion adsorption separation, and has good application and economic value.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
Preparation method and application of molybdenum and nitrogen doped lignocellulose compound adsorbing nano-material
ActiveCN109395701AGood dispersionImprove adsorption capacityOther chemical processesWater contaminantsCelluloseHigh pressure
The invention relates to a preparation method and an application of a molybdenum and nitrogen doped lignocellulose compound adsorbing nano-material. The method includes the steps: (1) calcining lignocellulose in the ammonia atmosphere, naturally cooling the calcined lignocellulose, and grinding the cooled lignocellulose to obtain nitrogen doped lignocellulose; (2) dissolving ammonium molybdate indeionized water to prepare solution I; (3) dissolving thioacetamide in deionized water to prepare solution II; (4) sufficiently mixing the solution I and the solution II to prepare solution III; (5) adding the nitrogen doped lignocellulose into the solution III, and stirring mixture to obtain solution IV; (6) transferring the solution IV into a high-pressure reaction kettle, and performing high-temperature reaction; (7) cooling the solution IV of high-pressure reaction, and centrifugally separating a reaction product to obtain the molybdenum and nitrogen doped lignocellulose compound adsorbingnano-material. According to the method, a molybdenum and nitrogen doped lignocellulose compound has good adsorption effects on hexavalent chromium, the adsorption performance of the compound basically keeps invariable, and the compound has good stability.
Owner:YANGZHOU UNIV
Geopolymer-based composition, and preparation method and application thereof
ActiveCN110252259AImprove high temperature performanceImprove mechanical propertiesOther chemical processesWater contaminantsGeopolymerWastewater
The invention relates to the technical field of pollution treatment and wastewater treatment, in particular to a geopolymer-based composition, and a preparation method and application thereof. The geopolymer-based composition comprises the following precursor components: metakaolin, an alkaline activator and a surfactant. The geopolymer-based composition is green, environmentally friendly and recyclable; through surfactant modification, the adsorptivity of the geopolymer-based composition to heavy metal anions is improved, and the adsorptivity to heavy metal cations is substantially unchanged.
Owner:GUANGDONG UNIV OF TECH
Magnetic micro-sphere, method for preparing same and application of magnetic micro-sphere to treating antibiotic wastewater
InactiveCN106475071AEasy to operateLow costOther chemical processesOrganic-compounds/hydrides/coordination-complexes catalystsIonChemistry
The invention provides a method for preparing a magnetic micro-sphere. The method includes modifying a chloromethyl polystyrene micro-sphere by the aid of ethylenediamine and chloroacetate to obtain a modified polystyrene micro-sphere; mixing ammonium ferrie oxalate, surfactants, ion buffering agents and alcohol organic solvents with one another to obtain ammonium ferrie oxalate solution; mixing the modified polystyrene micro-sphere and the ammonium ferrie oxalate solution with each other to obtain a mixture and carrying out pre-reaction on the mixture under an oxygen isolation condition; carrying out solvothermal reaction on a pre-reaction product to obtain the magnetic micro-sphere. The method for preparing the magnetic micro-sphere has the advantages that the method is easy to implement and low in cost, antibiotic wastewater can be effectively treated by the magnetic micro-sphere prepared by the aid of the method, and the magnetic micro-sphere can be recycled; 90% of tetracycline can be adsorbed and degraded in 2 h under the condition that 2 g of magnetic micro-sphere and an appropriate quantity of hydrogen peroxide are added into each liter of to-be-treated antibiotic wastewater which is 100 mg / L tetracycline aqueous solution.
Owner:TSINGHUA UNIV
Low-density self-forming graphite adsorption material as well as preparing and recycling method thereof
ActiveCN109745949AAchieve preparationAchieve recyclingFatty/oily/floating substances removal devicesOther chemical processesPollutionPolymer
The invention discloses a low-density self-forming graphite adsorption material for treating oil and polymer organic matter pollution of a water body and a preparing and recycling method of the low-density self-forming graphite adsorption material. The preparing and recycling method comprises the following preparation steps: firstly, uniformly stirring flake graphite, concentrated sulphuric acid and a hydrogen peroxide mixture in an environment of smaller than or equal to 10 DEG C; secondly, transferring the obtained mixture to a die with a specific shape, and standing at room temperature to obtain an expanded graphite forming body; thirdly, baking the expanded graphite forming body and recycling sulfuric acid. The graphite adsorption material prepared by the invention has the characteristic of self forming under the condition of room temperature without addition of a binder or extrusion and has very high adsorption performance for oil and organic solvents; the density of the adsorption material is smaller than or equal to 0.1 g / cm<3>. According to the preparing and recycling method disclosed by the invention, the sulfuric acid is recycled at low temperature while an expanded graphite adsorption material is prepared; the problem of environmental pollution caused by treatment of acid-containing wastewater in a traditional method of preparing expanded graphite is avoided. The adsorbed oil and organic solvents have excellent regenerating and reusing properties after extrusion or suction filter recovery.
Owner:TSINGHUA UNIV
Regeneration method of adsorption medium and de-coloring treatment method of printing and dyeing wastewater
ActiveCN106365242AExtended service lifeIncrease the reuse ratioIon-exchanger regenerationWater/sewage treatment by ion-exchangeDyeing wastewaterIon-exchange resin
The invention discloses a regeneration method of an adsorption medium and a de-coloring treatment method of printing and dyeing wastewater. The regeneration method comprises: a regeneration solution flows through the adsorption medium; the adsorption medium is ion exchange resin or / and macro-porous adsorption resin; the regeneration solution is prepared from the following components: NaCl with the mass percent of 2 percent to 8 percent, NaOH with the mass percent of 2 percent to 8 percent and rhamnolipid with the concentration of 100ppm to 300ppm. According to the de-coloring treatment method provided by the invention, the adsorption medium is regenerated through adopting the regeneration method. According to the regeneration method of the adsorption medium, provided by the invention, the resin is rapidly regenerated in a short period through adopting the special regeneration solution and the service life of resin de-coloring is greatly prolonged; the wastewater de-coloring efficiency is improved and the operation cost is reduced; after 1500BV wastewater is treated through the resin, the adsorption performance basically has no changes and the de-coloring efficiency can reach 80 percent or above for a long period.
Owner:ZHEJIANG UNIV
Method for preparing adsorption material for selectively separating palladium ions and product
InactiveCN110394152ARealize multiple reuseNo change in adsorptionOther chemical processesSilanesTriethoxysilane
The invention discloses a method for preparing an adsorption material for selectively separating palladium ions and a product. The method comprises the following steps: firstly, activating silica gelby using an acid, further enabling gamma-aminopropyl triethoxy silane and phenylamine to activated silica gel so as to carry amino, that is, SiO2-NH2, on the surface of the silica gel, further supporting graphene oxide on the surface of the SiO2-NH2, introducing double bonds and sulfydryl to the surface of a composite material by using a chemical grafting method, and finally performing process steps of palladium ion adsorption, polymerization, palladium elution, and the like, so as to obtain a palladium imprinted polymer with selective adsorption upon palladium ions. Experiment verification shows that the adsorption material prepared by using the method has a remarkable recognition property and affinity upon palladium ions.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
Metal anchoring organic amine CO2 adsorbent as well as preparation and application thereof
PendingCN113842885APrevent volatilizationImprove stabilityGas treatmentOther chemical processesOrganic chemistryMetal salts
The invention relates to a metal anchoring organic amine CO2 adsorbent and preparation and application thereof, and a preparation method mainly comprises the following steps: (1) preparation of an anchoring site-containing precursor: adding a metal salt into deionized water, heating and stirring to obtain a solution A; adding a carrier into the solution A, dipping and drying to obtain a precursor B containing a metal anchoring site; and (2) preparation of the metal anchoring organic amine CO2 adsorbent: adding organic amine into an ethanol solution, uniformly stirring to obtain a solution C, then adding the precursor B containing the metal anchoring sites into the solution C, and after the organic amine in the solution C is anchored to the precursor B, performing vacuum drying to obtain the metal anchoring organic amine CO2 adsorbent. According to the metal anchoring organic amine CO2 adsorbent provided by the invention, the stability of the organic amine adsorbent is enhanced by the preparation method, so that the cycling stability of the CO2 adsorbent is improved, and the metal anchoring organic amine CO2 adsorbent is an ultra-stable CO2 adsorbing material with industrial application prospects.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
A kind of geopolymer base composition and its preparation method and application
ActiveCN110252259BImprove high temperature performanceImprove mechanical propertiesOther chemical processesWater contaminantsActive agentSurface-active agents
The invention relates to the technical fields of pollution control and waste water treatment, in particular to a geopolymer-based composition and its preparation method and application. The present invention discloses a geopolymer-based composition made from the following precursor components: metakaolin, alkaline activator and surfactant. The geopolymer-based composition is environmentally friendly, recyclable, and reusable. The geopolymer-based composition is modified by a surfactant, so that the geopolymer-based composition has an increased adsorption capacity for heavy metal anions, and the adsorption performance for heavy metal cations is basically unchanged.
Owner:GUANGDONG UNIV OF TECH
Preparation method of thiourea-modified SiO2 composite material, product thereof, and application of product
InactiveCN110354800AHigh adsorption rateGood choiceOther chemical processesSilicon compoundsIonChemistry
The invention discloses a preparation method of a thiourea-modified SiO2 composite material, a product thereof, and an application of the product. Activated silica gel is aminated to obtain an amino group-containing silica gel composite material, and the amino group-containing silica gel composite material is further modified with allyl thiourea to obtain the thiourea-modified SiO2 composite material. The thiourea-modified silica gel composite material prepared in the invention has a high adsorption rate to palladium ions, has a good selectivity to ions in a solution, can be reused multiple times, and keeps the adsorption performance substantially unchanged when reused.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
A papermaking wastewater treatment process
ActiveCN108328864BEfficient removalPromote reductive transformationWater/sewage treatment by irradiationSpecific water treatment objectivesActivated carbonMicroorganism
The invention belongs to the technical field of papermaking industry and specifically relates to a papermaking wastewater treatment process. Papermaking wastewater is treated by using a coagulation-microelectrolysis-two-stage UASB-biological contact oxidation-ion exchange-activated carbon-ultraviolet disinfection combined process, so that refractory organic matters, suspended matters, SS and microorganisms in the treated papermaking wastewater are efficiently removed. Meanwhile, resin is rapidly regenerated within a short period by using a regeneration solution provided by the invention, and the attenuation of the resin can be delayed due to the addition of sophorolipids and trehalose ester in the regeneration solution, so that the service life of the resin is greatly prolonged, the wastewater decoloration efficiency is increased, and the operation cost is reduced.
Owner:WUHAN CHENMING HANYANG PAPER
Preparation method and application of nylon 65 material with porous structure
ActiveCN113522254AEasy to installEasy to operateOther chemical processesWater contaminantsPhysical chemistryDyeing wastewater
The invention discloses a preparation method and application of a nylon 65 material with a porous structure. The method comprises the following steps: after nylon 65 salt is synthesized by the patent CN108285532B, preparing a nylon 65 raw material through melt polymerization by the patent CN112920401A, mixing and dissolving anhydrous formic acid and the nylon 65 material, placing the fully dissolved nylon 65 formic acid solution in a container with a proper size, adding a sodium carbonate solution, and performing liquid foaming to obtain the nylon 65 material with the porous structure and excellent adsorption performance. The nylon 65 material with the porous structure prepared by the process has relatively strong adsorption performance by virtue of the special structure, and also has the characteristics of high temperature resistance, strong acid resistance, high efficiency in wastewater dye removal, reusability and the like. The nylon 65 adsorbing material can be used for adsorbing dye wastewater, and has the advantages of environmental protection, economy and high efficiency.
Owner:ZHENGZHOU UNIV
Preparation method and application of a molybdenum and nitrogen doped lignocellulose composite nano-adsorption material
ActiveCN109395701BGood dispersionImprove adsorption capacityOther chemical processesWater contaminantsCelluloseThio-
The invention relates to a preparation method and application of molybdenum and nitrogen-doped lignocellulose composite nano-adsorption materials, comprising the following steps: (1) Lignocellulose is calcined in an ammonia atmosphere, cooled naturally and then ground to obtain nitrogen-doped lignocellulose Cellulose; (2) Dissolve ammonium molybdate in deionized water to form solution I; (3) Dissolve thioacetamide in deionized water to form solution II; (4) Mix solution I and solution II thoroughly , prepared into solution III; (5) Nitrogen-doped lignocellulose was added to solution III, and stirred to obtain solution IV; (6) Solution IV was transferred to a high-pressure reactor for high-temperature reaction; (7) After the high-temperature reaction solution IV was cooled, The reaction product is centrifuged to obtain molybdenum and nitrogen doped lignocellulose composite nanometer adsorption material. According to the invention, the molybdenum and nitrogen doped lignocellulose composite has good adsorption effect on hexavalent chromium, and its adsorption performance remains basically unchanged after repeated tests, and has good stability.
Owner:YANGZHOU UNIV
Cationic organic polymer and its preparation method and application
ActiveCN108102092BHigh yieldThe synthesis method is simpleIon-exchange process apparatusOther chemical processesPolymer scienceHalohydrocarbon
The invention relates to a cationic organic polymer which is obtained by performing a polymerization reaction on a compound containing imidazole groups or pyridine groups and halohydrocarbon in an organic solvent at the temperature of 0-300 DEG C for 0-24h, wherein the ratio of the imidazole or pyridine groups to halogens is 1: 1; the compound containing the imidazole groups or pyridine groups isselected from the following chemical formulas; R1 is an imidazole group or pyridine group, and m, n, p and r are independently selected from integers that are greater than 0; the halohydrocarbon is selected from the following chemical formulas; X is independently selected from F, Cl, Br or I, and m is any integer which is 0 or greater. The invention also discloses application of the cationic organic polymer prepared by the preparation method, which serves as an HTcO4 radical and / or a perrhenic acid radical, in an adsorbent.
Owner:SUZHOU UNIV
Renewable adsorbent for hydrogen sulfide removal and preparation method thereof
PendingCN114146682AConcentrated mesoporous channelsImprove utilizationGas treatmentOther chemical processesMolecular sieveActivated alumina
The invention relates to a renewable adsorbent for hydrogen sulfide removal and a preparation method thereof, the adsorbent is composed of an active component and a carrier, the active component is an alkaline metal salt, and the carrier is a composite carrier having a plurality of mesoporous channel structures and composed of activated alumina and a molecular sieve. Compared with the prior art, by adjusting the pore channel structure of the composite carrier in the adsorbent, the composite carrier has mesoporous structures with pore size distribution of 2-20 nm and 20-50 nm respectively, and the utilization effect of the active component is improved, so that the single-time use time of the adsorbent is prolonged, the regeneration frequency is reduced, and the purpose of reducing the operation energy consumption during industrial application is achieved.
Owner:SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
Bimetal composite N-amyl imidazole thiocyanate ionic liquid as well as preparation method and application thereof in CO treatment
ActiveCN114230520APromote absorptionImprove adsorption capacityGas treatmentOrganic chemistryLiquid statePhysical chemistry
The invention discloses a bimetallic composite N-amyl imidazole thiocyanate ionic liquid and a preparation method and application thereof in CO treatment, the structural formula of the ionic liquid is as follows: mixing an N-amyl imidazole thiocyanate ionic liquid with cuprous thiocyanate and magnesium thiocyanate, heating and stirring to obtain a homogeneous liquid, the liquid state can still be kept at room temperature; the bimetal composite N-amyl imidazole thiocyanate ionic liquid can selectively absorb CO, the balance absorption amount of the bimetal composite N-amyl imidazole thiocyanate ionic liquid reaches 0.229 mol / mol of composite ionic liquid, and the bimetal composite N-amyl imidazole thiocyanate ionic liquid has good CO cycle absorption performance and has good application prospects in the fields of CO absorption and CO / N2 separation materials.
Owner:苏州仕净科技股份有限公司
A kind of low-density self-forming graphite adsorption material and its preparation and recovery regeneration method
ActiveCN109745949BAchieve preparationAchieve recyclingFatty/oily/floating substances removal devicesOther chemical processesOrganic solventSelf forming
Owner:TSINGHUA UNIV
A regeneration method of an adsorption medium and a decolorization treatment method of printing and dyeing wastewater
ActiveCN106365242BExtended service lifeNo change in adsorptionIon-exchanger regenerationWater/sewage treatment by ion-exchangeDyeing wastewaterIon-exchange resin
The invention discloses a regeneration method of an adsorption medium and a de-coloring treatment method of printing and dyeing wastewater. The regeneration method comprises: a regeneration solution flows through the adsorption medium; the adsorption medium is ion exchange resin or / and macro-porous adsorption resin; the regeneration solution is prepared from the following components: NaCl with the mass percent of 2 percent to 8 percent, NaOH with the mass percent of 2 percent to 8 percent and rhamnolipid with the concentration of 100ppm to 300ppm. According to the de-coloring treatment method provided by the invention, the adsorption medium is regenerated through adopting the regeneration method. According to the regeneration method of the adsorption medium, provided by the invention, the resin is rapidly regenerated in a short period through adopting the special regeneration solution and the service life of resin de-coloring is greatly prolonged; the wastewater de-coloring efficiency is improved and the operation cost is reduced; after 1500BV wastewater is treated through the resin, the adsorption performance basically has no changes and the de-coloring efficiency can reach 80 percent or above for a long period.
Owner:ZHEJIANG UNIV
Medicament for treating chronic renal failure and production method
ActiveCN100588406CNo change in dispersionNo side effectsPowder deliverySolution deliveryHemodialysisSide effect
The invention relates to a medicine for curing chronic renal failure and a production method thereof, which is characterized in that the medicine is calcium-base samoite excluding K+, Na+, Mg2+ and other exchangeable cations. The preparation method includes immersing the samoite in calcium chloride solution and then exchanging ions. After oral administration, toxins in the alimentary tract of patients with chronic renal failure is absorbed by samoite of the medicine and then discharged out of the body along with intestinal peristalsis, thus achieving intestinal hemodialysis. While absorbing and fixing the toxins in the alimentary tract, the calcium-base samoite has no side effect on patients of Na and K restriction without releasing K+, Na+, Mg2+ and other exchangeable cations.
Owner:SHANDONG TIANSHUN PHARMA
A kind of bimetal composite n-pentylimidazolium thiocyanate ionic liquid and its preparation method and its application in CO treatment
ActiveCN114230520BPromote absorptionImprove adsorption capacityGas treatmentOrganic chemistryLiquid statePhysical chemistry
The invention discloses a double-metal composite N-pentylimidazole thiocyanate ionic liquid and its preparation method and its application in CO treatment. , magnesium thiocyanate, heated and stirred to obtain a homogeneous liquid, which can still maintain a liquid state at room temperature; the bimetallic N-pentylimidazole thiocyanate ionic liquid can selectively absorb CO, and has a The equilibrium absorption capacity reaches 0.229mol / mol composite ionic liquid, and has good CO cycle absorption performance, in CO absorption and CO / N 2 The field of separation materials has a good application prospect.
Owner:苏州仕净科技股份有限公司
A kind of modified chitosan quaternary ammonium salt and its application
InactiveCN101775081BEasy to prepareMild conditionsOther chemical processesWater contaminantsActivated carbonWastewater
Owner:SUN YAT SEN UNIV
A kind of amino acid functionalized metal organic framework material and its preparation method and application
ActiveCN110215899BNo change in adsorptionHigh adsorption rateOther chemical processesWater/sewage treatment by sorptionMetal-organic frameworkPalladium ion
The invention discloses a metal-organic framework material functionalized with amino acids. The material includes a MOF-808 matrix and amino acid ligands introduced on its nodes. The modified metal-organic framework composite material of the invention can be used as an adsorbent for The adsorption rate of palladium ions is high, and the selectivity to ions in the solution is good, and the material can be reused many times, and the adsorption performance is basically unchanged. The invention further discloses a preparation method of the material. The modified raw material used in the method is amino acid, the source of the material is very rich, and the preparation process is very simple. The modified metal-organic framework composite material of the invention has great potential in the adsorption and separation of palladium ions, and has good application and economic value.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
Salicyhydroximic acid type chelate resin and preparation method thereof
InactiveCN103087231BSimple preparation processThe preparation process is simple and controllableOther chemical processesWater contaminantsMicrosphereChelating resin
The invention belongs to the field of chelate resin materials and provides a salicyhydroximic acid type chelate resin and a preparation method thereof for solving the problem that the existing hydroximic acid can not be repeatedly used in sewage treatment. The preparation method comprises that a ligand salicyhydroximic acid is bonded to the surface of a chloromethylated polystyrene microsphere to obtain the salicyhydroximic acid type chelate resin, and bonding quantity of the ligand salicyhydroximic acid is 0.38-0.43g / g. The salicyhydroximic acid type chelate resin has strong coordination complexing power to metal ions, can realize enrichment recycling of multiple precious metal ions, especially has excellent adsorbability and selectivity to heavy metal ions such as copper, nickel, lead, iron, zinc and chromium and can be effectively applied to treatment of sewage in the industries such as electroplating, electronics and heavy metals and extraction of rare earth minerals; besides, the bonding quantity of salicyhydroximic acid is high, a synthetic process is simple, conditions are mild, time is short, and synthesis is easy to control; and the chelate resin provided by the invention is convenient to use and easy to separate and recycle and can be recycled for 10 times while the adsorbability is basically constant.
Owner:ZHONGBEI UNIV
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