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67 results about "Ferric oxyhydroxide" patented technology
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Method for treating complexed chemical nickel electroplating wastewater
InactiveCN103833123AImprove processing efficiencyGood effectWaste water treatment from metallurgical processWater/sewage treatment by oxidationPotassium ferrateAdsorption effect
The invention provides a method for treating complexed chemical nickel electroplating wastewater and aims at the problem in the existing complexed chemical nickel electroplating wastewater treatment processes that the nickel ion removal efficiency is inadequate. The method comprises the main processes of firstly adding calcium hydroxide into the wastewater, adjusting the pH to 8-9 so as to form calcium phosphate precipitates, adding sulfuric acid into a supernatant liquid so as to adjust the pH of the liquid to 4-5, then, adding a potassium ferrate liquid with strong oxidizing power so as to decomplex in a strong oxidizing manner and change complexed nickel ions into free-state nickel ions, then, adding calcium hydroxide, adjusting the pH to 10-11 so as to enable the free-state nickel ions to form precipitates to be removed from the wastewater, enabling trivalent ferric ions with excellent flocculation function generated after oxidation of ferric acid radical ions to have flocculation with hydroxide precipitates with an adsorption effect, and finally, adding polyacrylamide (PAM) to coagulate and precipitate, thereby removing nickel ions from the electroplating wastewater. The method has the advantages that the condition that the nickel ions obtained after the complexed chemical nickel electroplating wastewater is treated reach the national standards can be effectively guaranteed, the treatment efficiency is high, and the requirements on emission are met.
Owner:陈瀚翔
Iron-dextran compound for use as a component in a therapeutical composition for prophylaxis or treatment of iron-deficiency
An iron-dextran compound for parenteral treatment of iron-deficiency anemia comprises hydrogenated dextran having a weight average molecular weight (Mw) between 700 and 1,400 Daltons, preferably approximately 1,000 Daltons, a number average molecular weight (Mn) of 400 to 1,400 Daltons and wherein 90% by weight of the dextran has molecular weights less than 2,700 Daltons and the Mw of the 10% by weight fraction of the dextran having the highest molecular weights is below 3,200 Daltons, said hydrogenated dextran having been subjected to purification by membrane processes having a cut-off value between 340 and 800 Daltons, in stable association with ferric oxyhydroxide. The compound is produced by using membrane processes to eliminate dextrans of higher molecular weights than approximately 2,700 Daltons and membrane processes to remove saccharides of molecular weights below approximately 340 Daltons from hydrogenated dextran before precipitating ferric hydroxide in the presence of said dextran followed by heat treatment and purification.
Owner:PHARMACOSMOS HLDG
Iron dextrin compounds for the treatment of iron deficiency anaemia
InactiveUS20030191090A1Improve usabilityCausing problemHeavy metal active ingredientsOrganic active ingredientsPolymer scienceFerric oxyhydroxide
An iron-dextrin compound for treatment of iron deficiency anaemia comprising hydrogenated dextrin having a weight average molecular weight equal to or less than 3,000 Dalton and a number average molecular weight equal to or higher than 400 Daltons, in stable association with ferric oxyhydroxide. As the molecular weight of the dextrin must be narrow it is another important feature of the invention that the 10% fraction of the dextrins having the highest molecular weight has an average molecular weight of less than 4500 Daltons, and that 90% of the dextrins are having molecular weights of less than 3000 Daltons. It is further important that the 10% fraction having the lowest molecular weight has a weight average molecular weight of 340 Daltons or more.
Owner:PHARMACOSMOS HLDG
Fire retardant compositions with reduced aluminum corrosivity
InactiveUS6905639B2Reduced-tendency to corrode various metalBroaden applicationFireproof paintsAntifouling/underwater paintsBiopolymerFerrous Gluconate
Corrosion-inhibited fire retardant compositions and methods of making and using the same are provided. The corrosion-inhibited fire retardant compositions are comprised of at least one fire retardant component, at least one biopolymer having a particle size diameter of less than about 100 microns, and a corrosion inhibiting system. The corrosion inhibiting system is comprised of at least one corrosion inhibiting compound selected from a group of compounds including azoles, insoluble ferric pyrophosphate, soluble ferric pyrophosphate, ferrous oxalate, ferric citrate, ferrous sulfate, ferric ammonium citrate, soluble ferric orthophosphate, insoluble ferric orthophosphate, ferric ammonium oxalate, ferric ammonium sulfate, ferric bromide, ferric sodium oxalate, ferric stearate, ferric sulfate, ferrous acetate, ferrous ammonium sulfate, ferrous bromide, ferrous gluconate, ferrous iodide, ferric acetate, ferric fluoroborate, ferric hydroxide, ferric oleate, ferrous fumarate, ferrous oxide, ferric lactate, ferric resinate and any combination thereof. In a specific embodiment, the corrosion-inhibited fire retardant composition includes a xanthan biopolymer.
Owner:PERIMETER SOLUTIONS LP
Chemical process
This invention provides a process for preparing sodium ferric gluconate complex in sucrose using the following steps: a) combining a ferric salt solution with a weak alkali chosen from the group consisting of alkaline earth metal and ammonium salts, such as sodium carbonate, sodium bicarbonate, lithium carbonate, potassium carbonate, potassium bicarbonate, ammonium carbonate, ammonium bicarbonate and mixtures thereof, to form the ferric oxyhydroxide; b) combining ferric oxyhydroxide and sodium gluconate in solution to yield the sodium ferric gluconate complex; c) isolating the sodium ferric gluconate complex; and d) combining the sodium ferric gluconate with sucrose in solution to yield the desired sodium ferric gluconate complex in sucrose.
Owner:GENEVA PHARMA INC
Process for production of iron oxyhydroxide particles
InactiveUS20090169470A1Small size changeUniform particle shapeMaterial nanotechnologyPigmenting treatmentIron oxyhydroxidePhotochemistry
The process for production of iron oxyhydroxide particles according to the invention is characterized by comprising a step (A) in which a suspension containing iron(II) is prepared, and a step (B) in which fine bubbles with diameters of 0.05-500 μm are generated in the suspension to form a reaction mixture, and the iron(II) in the reaction mixture is oxidized by the bubbles to produce iron oxyhydroxide particles.
Owner:TDK CORPARATION
Compound type desulfurization grout and preparation method thereof
ActiveCN103752163AHigh sulfur capacityImprove desulfurization efficiencyDispersed particle separationSulfurFerric oxyhydroxide
The invention relates to compound type desulfurization grout. According to the compound type desulfurization grout, ferric oxyhydroxide is added into a complex iron desulfurization solution, so that the desulfurization is carried out by virtue of a synergistic effect of the ferric oxyhydroxide and the complex iron desulfurization solution; compared with the prior art, the problem that the desulfurization cost is relatively high because the large amount of complexing solution is circularly used when a ferric complex singly taken as a desulfurization agent with the relatively low saturated sulfur capacity is used for removing H2S by virtue of a wet method is solved; the complex iron desulfurization solution is effectively mixed with the ferric oxyhydroxide, so that the characteristics of high desulfurization speed and desulfurization efficiency of the complex iron desulfurization solution are combined with the high-sulfur-capacity characteristic of the ferric oxyhydroxide, so that the relatively high desulphurization efficiency and the relatively high sulfur capacity are maintained, and the high-speed, high-efficiency and high-precision desulphurization is realized.
Owner:福建三聚福大化肥催化剂国家工程研究中心有限公司 +1
Preparation method and application of zero-valent iron/graphene 3D nano-microcapsules
InactiveCN105833809AGood dispersionOptimal Control StructureOther chemical processesTransportation and packagingDispersityIron salts
The invention provides a preparation method of zero-valent iron / graphene 3D nano-microcapsules; the preparation method comprises the steps: firstly, respectively oxidating a graphite powder to obtain graphene oxide, and carrying out a hydrolysis reaction of a trivalent iron salt to obtain ferric oxyhydroxide; then treating graphene oxide and ferric oxyhydroxide by an aerosol method to obtain iron oxide / graphene 3D nano-microcapsules; and finally, carrying out high-temperature calcination on the iron oxide / graphene 3D nano-microcapsules in a hydrogen / argon environment to obtain the zero-valent iron / graphene 3D nano-microcapsules. Iron nanoparticles in the iron oxide / graphene 3D nano-microcapsules prepared by the method provided by the invention have good dispersity, are controllable in structure and size, can be stored for a long term and remain stable, and effectively avoid the defects that iron nanomaterials, especially nano zero-valent iron particles, are extremely unstable and are easily passivated and agglomerated. The zero-valent iron / graphene 3D nano-microcapsules prepared by the method can be used in the fields of dye decolorization, heavy metal adsorption and other pollution environmental remediation, as well as magnetic resonance imaging and other magnetic materials.
Owner:CHONGQING TECH & BUSINESS UNIV +1
Phosphate binding materials and their uses
ActiveUS20100032374A1Improve complicationsChronic failureOrganic active ingredientsOther blood circulation devicesPhosphateCarboxylic acid
Phosphate binding materials and compositions comprising them which are solid ligand-modified poly oxo-hydroxy metal ion materials are disclosed that are based on ferric iron oxo-hydroxides modified with carboxylic acid ligands, or ionised forms thereof. These materials are made and tested in the examples provided in the application to demonstrate that they can bind phosphate in in vitro and in in vivo studies.
Owner:UK RES & INNOVATION LTD
Phosphate binding materials and their uses
ActiveUS7943664B2High levelImprove complicationsOrganic active ingredientsSolid sorbent liquid separationFerric oxyhydroxideCombinatorial chemistry
Phosphate binding materials and compositions comprising them which are solid ligand-modified poly oxo-hydroxy metal ion materials are disclosed that are based on ferric iron oxo-hydroxides modified with carboxylic acid ligands, or ionized forms thereof. These materials are made and tested in the examples provided in the application to demonstrate that they can bind phosphate in in vitro and in in vivo studies.
Owner:UK RES & INNOVATION LTD
Preparation of electrochemical sensor with real-time visual colorimetric display
InactiveCN110068570ALarge specific surface areaPromote absorptionMaterial analysis by observing effect on chemical indicatorMaterial electrochemical variablesAntigenPhotocathode
The invention discloses a preparation of an electrochemical sensor with real-time visual colorimetric display, and relates to the technical field of the electrochemical detection. The preparation method comprises the following steps: preparing nickel through a potential deposition method; taking ferric oxyhydroxide / bismuth vanadate nanometer composite material as photoanode, taking electrically-polymerized Prussian blue as photocathode and preparing a laccase catalyst as the biological cathode, and connecting with a portable digital multimeter and a capacitor by utilizing an external coil. Under the specific binding effect of the antigen-antibody, the glucose is promoted to produce hydrogen peroxide under the catalysis of the glucose oxidase, thereby accelerating the nickel under the illumination; in the process of producing the ferric oxyhydroxide / bismuth vanadate photoelectron, the produced instantaneous current can be read through the digital multimeter, and the Prussian blue receiving electron is changed as the Prussian white and can be used as the synchronous colorimetric display. After the reaction is finished, the Prussian white connects with the laccase to recover an initial state and change as the Prussian blue; the circulation of the photocathode material provides great convenience for the construction of the sensor.
Owner:UNIV OF JINAN
Ferric oxyhydroxide material modified by metal-doped cyclodextrin and one-step synthesis method of ferric oxyhydroxide material
ActiveCN107537566AImprove stabilityEfficient BandgapWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsIron saltsSynthesis methods
The invention relates to a ferric oxyhydroxide material modified by metal-doped cyclodextrin. The ferric oxyhydroxide material is a composite material formed by coating ferric oxyhydroxide and a metalion or metal with cyclodextrin, wherein the mass ratio of the cyclodextrin to the metal ion or metal to the ferric oxyhydroxide is 5-30: 0.1-10: 100; the ferric oxyhydroxide material is prepared by adding iron salt, metal salt and cyclodextrin to water and performing one-step reaction synthesis. The composite material provided by the invention greatly improves a catalysis effect of the ferric oxyhydroxide by doping of precious metals or transition metals and modification of cyclodextrin, not only has characteristics of hydrogen peroxide catalysis, photocatalysis, enzyme-like catalysis and thelike, but also has a host-guest inclusion effect of cyclodextrin supermolecules, and plays an important role in catalytic degradation of pesticide, physiological hormone and other types of pollutantsin water by the excellent catalysis performance and the inclusion effect of supermolecules.
Owner:SHANDONG UNIV
Method for removing organic matters in reclaimed water by using in situ FeOxHy
InactiveCN103253725AEasy to handleSimple methodOther chemical processesWater contaminantsFiltrationWater source
The invention relates to the field of treatment of reclaimed water, especially to a method for removing organic matters in reclaimed water by using in situ FeOxHy. Directed at the problem that secondary effluent of a municipal sewage plant has high content of organic matters, the invention brings forward the method of improving removal effects of coagulation, deposition and filtration units of a reclaimed water plant on organic matters by using combined action of an alkali salt and a ferric salt, wherein an alkali salt solution and a ferric salt solution are added according to a certain mol ratio and react with each other to produce in situ FeOxHy which enables organic matters in water to be agglomerated and adsorbed and settling properties of floc to be improved, and removal of the organic matters is further realized by using a solid-liquid separation reactor. The method can be used for deep purification of secondary effluent of the municipal sewage plant and is also applicable to a reclaimed water treatment project using effluent of the municipal sewage plant or rainwater as a water source.
Owner:BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
Magnetic ferric oxide desulfurizer and preparation method thereof
ActiveCN105597516AHigh sulfur capacityEasy accessGaseous fuelsDispersed particle separationCooking & bakingHigh pressure
The invention discloses a magnetic ferric oxide desulfurizer and a preparation method thereof. The preparation method comprises the following steps that 1, ferric oxyhydroxide, a binder and an auxiliary are mixed to be uniform, and a mixture I is obtained, wherein the auxiliary adopts coal ash and / or volcanic ash; 2, the mixture I, peptizer and water are mixed to be uniform, and a mixture II is obtained; 3, the mixture II is formed and dried; 4, baking is conducted on a dried forming composition, and the magnetic ferric oxide desulfurizer is obtained. The prepared magnetic ferric oxide desulfurizer has a porous structure and is high in mechanical strength and capable of making full contact with sulfur-containing gas, and the desulfurization efficiency is improved. Desulfurization can be conducted under the working conditions of room temperature to medium temperature, normal pressure to high pressure, high hydrogen sulfide content, high moisture content and different feed gases, in the desulfurization process, the strength of a desulfurizing agent is not reduced, argillation and hardening phenomena do not exist, and the high desulfurization activity is kept all the way.
Owner:BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
Visible-light-driven self-cleaning graphene oxide oil-water separation membrane as well as preparation method and application thereof
ActiveCN111871225AImprove hydrophilicityGood underwater superoleophobic wetting propertiesSemi-permeable membranesMembranesFerric oxyhydroxideMembrane surface
The invention provides a preparation method of a visible-light-driven self-cleaning graphene oxide oil-water separation membrane. The preparation method comprises the following steps: S1, preparing aGO / TA composite membrane; and S2, loading iron oxyhydroxide on the GO / TA composite film prepared in the step S1 to prepare a GO / TA@FeOOH-x composite film. According to the preparation method of the visible-light-driven self-cleaning graphene oxide oil-water separation membrane provided by the invention, a stable ultrathin skin layer with a good oil-water separation effect is constructed on the surface of a PVDF membrane by utilizing the good film-forming property of the two-dimensional material graphene oxide, so that a stable graphene oxide oil-water separation membrane is formed; further, through a mineralization reaction of ferric ions in a ferric trichloride solution, ferric oxyhydroxide particles are loaded on a tannic acid modified graphene oxide sheet layer, therefore, the preparedvisible-light-driven self-cleaning graphene oxide oil-water separation membrane has good hydrophilic performance and underwater super-oleophobic wetting performance and also has excellent visible-light-driven self-cleaning capability.
Owner:XIHUA UNIV +1
Activated carbon supporting ferric oxyhydroxide composite adsorbent, and preparation and application thereof
InactiveCN107961760AImprove adsorption capacityHigh removal rateOther chemical processesWater contaminantsActivated carbonSorbent
The invention belongs to the technical field of water body purification, and discloses an activated carbon supporting ferric oxyhydroxide composite adsorbent, and preparation and application thereof.A preparation method includes the steps of: 1) acidifying the activated carbon, changing water to boil the activated carbon, washing the activated carbon, and changing water to boil the activated carbon, repeating the operations hereinabove until a filtrate is clear and transparent after the activated carbon is washed, and drying the activated carbon and calcining the activated carbon at high temperature to prepare pretreated activated carbon; 2) uniformly dispersing the pretreated activated carbon in a FeCl3 solution, sealing the mixture, performing an infiltration reaction, and washing and drying the product to prepare the activated carbon supporting ferric oxyhydroxide composite adsorbent. The method is simple and low-cost. In the composite adsorbent, the ferric oxyhydroxide is in a spindle-like shape and is uniformly supported on the activated carbon. The composite adsorbent is stable and can remove bromates in water high-effectively, is easy to recycle, and is used for removing the bromates in drinking water.
Owner:SOUTH CHINA UNIV OF TECH
Fluidized bed hydrogenation method
ActiveCN104593049AAccelerated vulcanizationEvenly distributedOrganic-compounds/hydrides/coordination-complexes catalystsTreatment with moving solid particlesHydrogenation reactionFerric oxyhydroxide
The invention discloses a fluidized bed hydrogenation method. According to the invention, raw oil and hydrogen gas contact a fluidized bed hydrogenation catalyst, such that a hydrogenation reaction is carried out, and a reaction product is obtained. The fluidized bed hydrogenation catalyst comprises the components of ferric oxyhydroxide, macroporous alumina, organic polycarboxylic acid and a binding agent. The fluidized bed hydrogenation catalyst comprises, with the weight of the catalyst as a standard, 10-50% of ferric oxyhydroxide, 30-80% of macroporous alumina, and 1-20% of the binding agent. The content of organic polycarboxylic acid is 0.05-0.40g / g of ferric oxyhydroxide. According to the catalyst adopted by the invention, cheap ferric oxyhydroxide is adopted as an active metal component, such that the cost is low. The catalyst also has relatively high hydrogenation activity and stability.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for degrading guanidine gum in waste fracturing fluid under coupling of potassium ferrate and ultrasonic intensification
ActiveCN105540964AReduce COD
<sub>Cr</sub>
value and viscosityDeep oxidationFatty/oily/floating substances removal devicesWater/sewage treatment with mechanical oscillationsFlocculationAlcohol
The invention relates to the technical field of waste fracturing fluid, in particular to a method for degrading guanidine gum in waste fracturing fluid under the coupling of potassium ferrate and ultrasonic intensification. The method includes the following steps that firstly, the waste fracturing fluid is separated after standing to obtain clear fluid; secondly, absolute ethyl alcohol is added into the clear fluid for purification; thirdly, an alkali regulator is added into the purified guanidine gum solution to regulate the pH value; fourthly, a potassium ferrate aqueous solution is added, meanwhile external-field ultrasonic intensification and oxidization are carried out, and qualified flowback fracturing fluid is obtained. According to the method of deeply oxidizing guanidine gum in the waste fracturing fluid with potassium ferrate under external-field ultrasonic intensification, guanidine gum is deeply oxidized under the coupling of the oxidizing agent and the external-field acting force, and the CODCr value and viscosity of the waste fracturing fluid are effectively reduced; meanwhile, secondary pollution is not generated in the treating process as potassium ferrate serves as the oxidizing agent and is environmentally friendly, and the chroma of the flowback fluid is increased as ferric hydroxide generated after potassium ferrate is reduced has the flocculation and precipitation effect.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Compound type desulfurization grout and preparation method thereof
ActiveCN103752163BHigh sulfur capacityImprove desulfurization efficiencyDispersed particle separationSulfurFerric oxyhydroxide
Owner:福建三聚福大化肥催化剂国家工程研究中心有限公司 +1
Method for inhibiting carbon dioxide released by mineralizing organic material
The invention relates to a method for inhibiting the release of carbon dioxide caused by the mineralization of organic materials, which belongs to the technical field of resource reuse and comprises the following steps: (1) organic materials are collected, which mainly comprise sludge, pig manure or paddy straw; (2) the organic materials are respectively dried and crashed into 60-mesh powder; (3) according to the proportion that 5ml of 0.2mol / L ferric hydroxide colloid is added to every 10g of dried organic materials, granulation is carried out; and (4) at room temperature, the granules are aired and aged for about 8-15 days to prepare the dry granular products of the sludge, the pig manure or the paddy straw. The method has the advantages of simple operation and low cost; the product prepared by the method can effectively reduce the degradation rate of the organic materials, thus being beneficial for climatic environment protection. The method can be further popularized as a way of large-scale treatment of the organic materials, and the product can be used both as an effective organic material and a soil improvement agent, thereby achieving the effect of killing two birds with one stone.
Owner:NANJING AGRICULTURAL UNIVERSITY
Iron dextrin compounds for the treatment of iron deficiency anaemia
InactiveCN1646568AObvious advantagesHeavy metal active ingredientsOrganic active ingredientsFerric oxyhydroxideOrganic chemistry
An iron-dextrin compound for treatment of iron deficiency anaemia comprising hydrogenated dextrin having a weight average molecular weight equal to or less than 3,000 Dalton and a number average molecular weight equal to or higher than 400 Daltons, in stable association with ferric oxyhydroxide. As the molecular weight of the dextrin must be narrow it is another important feature of the invention that the 10% fraction of the dextrins having the highest molecular weight has an average molecular weight of less than 4500 Daltons, and that 90% of the dextrins are having molecular weights of less than 3000 Daltons. It is further important that the 10% fraction having the lowest molecular weight has a weight average molecular weight of 340 Daltons or more.
Owner:PHARMACOSMOS HLDG
Method for producing inorganic filling material used for wood plastic material by titanium gypsum
The invention provides a method for producing an inorganic filling material used for a wood plastic material by titanium gypsum, which belongs to the technical field of comprehensive utilization of solid waste. The method comprises the following steps: directly adding an alkalescence substance during a titanium dioxide production process through a sulfuric acid method, conversing the soluble salt in a titanium gypsum slurry to an insoluble substance, filtering, dehydrating through a high temperature drying process and simultaneously decomposing hydrophilic substances such as dihydrate gypsum, iron hydroxide, aluminium hydroxide in titanium gypsum to form hemihydrate gypsum, iron oxide and alumina with poor hydrophilcity, modifying the surface of the dried titanium gypsum by a coupling agent to increase the lipophilicity, and finally performing ball milling to obtain the modified gypsum powder with particle size less than 800 meshes. The inorganic filling material can obviously increase the hardness and strength of the wood plastic products, effectively reduces the raw material cost of the wood plastic product, and provides a novel effective approach for comprehensive utilization of titanium gypsum.
Owner:MAANSHAN HOYO MATERIAL TECH CO LTD
Wet treatment method for ferronickel and application thereof
ActiveCN113667825AOxygen easyAvoid pollutionNickel sulfatesProcess efficiency improvementFerric oxyhydroxideAcid dissolution
The invention discloses a wet treatment method for ferronickel and application thereof; and the treatment method comprises the following steps of: in a high-pressure oxygen environment, mixing crushed ferronickel, sulphuric acid and a corrosion aid, performing acid leaching reaction, performing solid-liquid separation on slurry after acid leaching, adding an oxidizing agent into the obtained filtrate, performing heating, removing the corrosion aid, adding a precipitator into the filtrate, controlling the pH value of the filtrate, and performing solid-liquid separation to obtain ferric hydroxide precipitate and nickel-containing filtrate; and performing extraction and back extraction on the nickel-containing filtrate to prepare battery-grade nickel sulphate. According to the invention, the ferronickel is subjected to oxidation acid dissolution in cooperation with the corrosion aid under the high-pressure oxygen and acidic conditions; the ferronickel is extremely prone to oxidation in the high-pressure oxygen environment; and a strong oxidant is added into the filtrate subsequently, so that ferrous ions in the filtrate are completely converted into ferric ions, the corrosion aid can be oxidized to generate pollution-free carbon dioxide and water, and the influence of the corrosion aid on the subsequent extraction process is avoided.
Owner:GUANGDONG BRUNP RECYCLING TECH +2
Passivator for Cd and Pb pollution in farmland soil and preparation method and restoration method of passivator
ActiveCN111423885AImprove repair effectLower enrichment factorAgriculture tools and machinesOrganic fertilisersSoil sciencePhosphate
The invention discloses an improved farmland contaminated soil passivator, a preparation method thereof and a soil remediation method, the passivator mainly aims at heavy metal pollutants Cd and Pb infarmland soil, and the passivator is composed of modified attapulgite, biochar, quick lime and phosphate. The attapulgite is modified, so that the attapulgite is loaded with nano iron oxide or ferrichydroxide core-shell particles, and the adsorption and repair capacity of the attapulgite is enhanced. The repairing technological process is optimized, the adding sequence of passivator components is specifically optimized, and the repairing effect is better.
Owner:JILIN UNIV
Nano-compound deodorant and preparation method thereof
InactiveCN108816024AFast removal of hydrogen sulfideHigh removal rateBiocideDispersed particle separationActive agentSurface-active agents
The invention provides a nano-compound deodorant and a preparation method thereof. The nano-compound deodorant is prepared from the following raw materials in parts by weight: 15 to 45 parts of ferrichydroxide, 5 to 25 parts of nano calcium peroxide, 0.5 to 5 parts of surfactant, 1 to 6 parts of suspended powder, 3 to 7 parts of alum and 1 to 5 parts of dispersing agent. The nano-compound deodorant disclosed by the invention has quick penetrability to odorous volatile substances, in particular to volatile matters such as ammonia, fat and protein which produce hydrogen sulfide odorous substances; the nano-compound deodorant can quickly penetrate into the volatile substances for sterilization, so that odorous substances are fundamentally degraded; the nano-compound deodorant has the advantages of high interfacial activity, good migration activity, no toxicity, environment friendliness, no secondary pollution, stable property, no explosibility, no corrosion, no irritation, stable efficacy, long action time, capability of treating both symptoms and causes, safety use, easy operation, wide universality and rapid and obvious deodorant effect.
Owner:程沐
Filter media for removing methyl tert-butyl ether in water and preparation method thereof
InactiveCN102240481AEfficient removalHigh removal rateWater contaminantsFiltration separationActivated carbonFerric oxyhydroxide
The invention discloses filter media for removing methyl tert-butyl ether in water, a preparation method thereof and a filter core prepared by the filter media. The preparation method provided by the invention comprises the following steps of: displacing a mixture into a mould pressing machine for mould pressing, sintering at the temperature of 150-250 DEG C for 30-100 minutes, cooling and demoulding to obtain the filter media, wherein the mixture contains, by weight, 250-500 parts of ultrahigh molecular weight polyethylene, 300-500 parts of phenol-absorbed wood-based activated carbon, 10-50 parts of a gas generation agent, and 200-350 parts of limestone particles with ferric oxyhydroxide coated on the surface. The ultrahigh molecular weight polyethylene, the phenol-adsorbed wood-based activated carbon and the limestone particles with ferric oxyhydroxide coated on the surface all have a strong adsorption to methyl tert-butyl ether. Therefore, by the cooperation of the above raw materials, the filter core prepared by the filter media can effectively remove methyl tert-butyl ether in water to be processed.
Owner:QIDI ELECTRIC GROUP
Hydrogenation method of coal tar
ActiveCN104593058AConsistent activityEasy to removeTreatment with hydrotreatment processesMolecular sievePtru catalyst
The invention discloses a hydrogenation method of coal tar. The method includes performing hydrogenation modification of the coal tar raw material, separating to remove water, and performing hydrofining and fractionation to obtain a gasoline fraction, a diesel oil fraction and a hydrogenation tail oil, wherein a catalyst applied in the hydrogenation modification process comprises ferric oxyhydroxide, organic polybasic carboxylic acid, macroporous alumina, molecular sieve and pseudo-boehmite. The inventive method adopting the hydrogenation modification catalyst with the low-cost ferric oxyhydroxide as an active metal component has low cost, and can realize moderate cracking and refining of the coal tar, effectively remove impurities in the coal tar, adjust product distribution and properties, and extend running cycle of a device.
Owner:CHINA PETROLEUM & CHEM CORP +1
Efficient water quality purification composite material
InactiveCN104445490AImprove precipitation effectImprove adsorption capacityWater/sewage treatment by flocculation/precipitationWater/sewage treatment by sorptionPolyesterToluene diisocyanate
The invention discloses an efficient water quality purification composite material which is prepared from the following raw materials in parts by weight: 6-10 parts of soybean protein, 8-14 parts of hollow glass micro-beads, 5-9 parts of kaolin, 6-8 parts of calcium sulfate, 1-5 parts of aloe, 5-9 parts of hydroxyl-terminated polyester cyclo-polyhydric alcohol, 2-6 parts of a cement mortar solution, 7-11 parts of toluene diisocynate, 2-5 parts of ferric hydroxide, 1-3 parts of an antioxidant, 2-7 parts of ion exchange resin, 2-6 parts of hydroxyapatite and 2-4 parts of gypsum powder. The efficient water quality purification composite material disclosed by the invention has the beneficial effects that the efficient water quality purification composite material can be used for better adsorbing pollutants suspending in water and improving precipitation; meanwhile, the efficient water quality purification composite material is free from secondary pollution, and is simple and safe.
Owner:QINGDAO CHANGANDA PHARMA IND CO LTD
Method for preparing mesoporous Alpha-Fe2O3/Alpha-Al2O3 and magnetic mesoporous Gamma-Fe2O3/Alpha-Al2O3 nanoscale composite materials under low-temperature condition
InactiveCN107265510ALarge specific surface areaUniform pore size distributionMaterial nanotechnologyInorganic material magnetismAluminium saltsChemistry
The invention discloses a method for preparing mesoporous Alpha-Fe2O3 / Alpha-Al2O3 and magnetic mesoporous Gamma-Fe2O3 / Alpha-Al2O3 nanoscale composite materials under a low-temperature condition. By a soluble aluminium salt and ferric salt hydrolysis method, aluminium hydroxide and ferric hydroxide sol are prepared, and the sol is then dried to remove free water, so that corresponding aluminium hydroxide and ferric hydroxide xerogel is obtained; moisture in molecules is lost by calcination, so that the mesoporous Alpha-Fe2O3 / Alpha-Al2O3 nanoscale composite material is obtained, and then by reduction, the magnetic mesoporous Gamma-Fe2O3 / Alpha-Al2O3 nanoscale composite material is obtained. The grain size of the nanoscale Alpha-Al2O3 particles prepared by the method under 800 DEG C is about 50nm, and as an initial material for the preparation of alumina ceramic and a doping component for the preparation of composite materials and coating materials, the mesoporous Alpha-Fe2O3 / Alpha-Al2O3 and magnetic mesoporous Gamma-Fe2O3 / Alpha-Al2O3 nanoscale composite materials are of great significance.
Owner:SHANGHAI UNIV
Preparation method of iron-based composite catalyst for catalytic ozonation treatment of coal chemical wastewater
PendingCN113262787AImprove stabilityGood dispersionCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsPtru catalystFerric oxyhydroxide
The invention discloses a preparation method of an iron-based composite catalyst for catalytic ozonation treatment of coal chemical wastewater. The preparation method comprises the following steps: activating / pretreating a carrier, preparing a metal precursor solution, loading Fe onto an Al2O3 carrier, and performing oscillating, aging, drying and washing. According to the preparation method, the aluminum oxide is taken as the carrier, urea is taken as a self-sacrifice template, so that iron oxide is loaded on the surface of aluminum oxide, and the existence of urea is beneficial to precipitation of iron on the carrier; when heating is carried out at 90-120 DEG C, urea can be decomposed very slowly to form hydroxyl groups, and the hydroxyl groups are uniformly distributed on the surface and pores of the Al2O3 carrier; then, ferric hydroxide and ferric oxyhydroxide are precipitated on the surface of the carrier. The active substance directly grows on the surface of the carrier, so that the stability and dispersity of Fe are obviously improved, and meanwhile, the loading amount of Fe on the carrier is increased.
Owner:CCTEG CHINA COAL RES INST +1
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