Method of obtaining sorbents based on iron hydroxide and calcium sulphite on carrier from cellulose fibre |
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IPC classes for russian patent Method of obtaining sorbents based on iron hydroxide and calcium sulphite on carrier from cellulose fibre (RU 2523466):
Method of obtaining calcium sulphate-based sorbent on carrier from cellulose fibres / 2523465
Sorbent contains calcium sulphate on a carrier from fibrillated cellulose fibres, which contains not less than 95 wt % of the fibres not longer than 1.20 mm and not less than 55 wt % of the fibres not longer than 0.60 mm. A method includes preparation of an initial water dispersion, which contains the said fibres and dissolved calcium chloride. The dispersion is processed with sodium sulphate. Processing results in formation of calcium sulphate particles and their immobilisation on the fibres. The quantity of immobilised calcium sulphate particles constitutes 100-1200 wt. p. counted per 100 wt.p. of the fibres.
 Method of obtaining sorbent for selective extraction of cesium / 2521379
Method of obtaining includes resorcinol neutralisation with a solution of alkali metal hydroxide, introduction of formaldehyde and calcium carbonate into a reaction mixture. Oligomerisation of the reaction mixture and polycondensation are performed with obtaining a granulated product. Stages of neutralisation, oligomerisation and polycondensation are performed in inert gas atmosphere. Polycondensation is realised by dispersion of an oligomer mixture into a layer of liquid which does not mix with it. After that, calcium carbonate is removed from the obtained granules by processing with an acid. A sorbent is washed and dried.
Sorbent for purification of water media from arsenic and method of obtaining thereof / 2520473
Invention relates to sorbents for purification of water from arsenic. A sorbent contains substances, selected from polyvinyl alcohol, polyacrylamide, methycellulose, polyethylene glycol as a water-soluble polymer. A method of the sorbent obtaining includes mixing wastes of deironing plants, containing 10-12% of iron oxyhydroxide with a water solution of a polymer and glycerol. A mixture is processed by ultrasound, kept for 24 hours. The formed sediment is dried at 50-60°C.
Method of obtaining sorbent with magnetic properties for collection of oil products from water surface / 2518586
Sorbent is obtained by mixing iron-containing wastes of metallurgical production with wastes of production of mineral fertilisers and anionic SAS, representing derivatives of fatty acids. Mixing is performed at temperature 60°C. Mixture is homogenised until homogenous state is achieved. Sorbent, containing, counted per element composition, wt %: calcium - 34, oxygen - 44, carbon - 13, iron - 8, hydrogen - 0.6, sodium - 0.4.
 Adsorbent, method for production thereof and method of removing sulphur from cracked petrol or diesel fuel / 2517639
Group of inventions relates to adsorbents for removing sulphur from cracked petrol or diesel fuel. The adsorbent contains 10 wt % to about 25 wt % aluminium oxide, 10-20 wt % silicon dioxide, 35-65 wt % metal oxide selected from groups IIB and VB, 8-20 wt % metal catalyst selected from groups VIIB and VIII, 1-5 wt % metal oxide selected from group IA. The group IA metal oxide is uniformly distributed in the entire volume of the adsorbent. The method of production involves preparing a moulding mixture from an acidic suspension containing an adsorbent precursor, moulding, drying and calcining to obtain a support. A precursor compound of the metal catalyst is then added to the support and reduced in a hydrogen-containing atmosphere. Sulphur is removed from the obtained adsorbent at 350-500°C.
 Method of obtaining caesium sorbent / 2516639
Cesium sorbent is obtained in form of particles of natural microcline analogue. Amorphous silica is dissolved in potassium hydroxide at temperature from 15 to 80°C. Obtained solution is mixed with solution of soluble aluminium salt until neutral pH is obtained. Formed sediment is separated. It is subjected to purification and dehydration. Natural microcline analogue with particles coarseness with diameter preferably 10-20 nm is applied. In addition, component ratio in the synthesis is taken calculated for obtaining material with formula KAlSi3O8 counted for water-free material. Duration of process of keeping mixture of products of hydrothermal processing of mixture of finely dispersed silica with solution of aluminium-containing soluble aluminium salt constitutes not more than 4 hours.
 Method of producing ion-exchange material adaptively selective to rare-earth metals / 2515455
Invention relates to ion exchange. Disclosed is a method of producing an adaptively selective ion-exchange material, which involves preparing a template-containing phase, a monomer mixture, adding the monomer mixture to the prepared template-containing phase while stirring and raising temperature. The obtained granules are treated with a desorbing solution to form a porous cross-linked polymer with molecular imprints, having a cavity of given size. The molecular imprints are formed by forming chemical bonds between a rare-earth metal cation and functional groups of aminomethylene phosphinic acids formed by reacting urotropin, paraform and aqueous hypophosphorous acid solution.
 Method of producing cesium sorbent / 2510292
Invention relates to production of sorbents used for decontamination of organisms of animals and human being at radiochemical contamination by cesium. Fine silica is mixed with water solution of potassium hydroxide, said mix being subjected to hydrothermal treatment at 120°C for 2-3 hours. After filtration, aluminium salt solution is added to filtrate, said solution having acid anion stronger than polysilicon acid. Said initial components are taken at the ratio that allows obtaining of KAlSi3O8-formula material. Reaction mix is held for 10-180 minutes to ensure neutral pH. Formed precipitate is flushed and dehydrated.
 Product systems for premixes stable in storage / 2508160
Invention relates to product systems for store of mixes. Proposed system comprises at least one porous carrier, at least one active substance introduced in said carrier and at least one protective system. Protective system comprises one or several protective substances. Note here that at least a portion of protective system is contained in carrier pores. X-ray photoelectron spectroscopy data shows that system outer atomic layer has at least 15% of its outer surface formed by carrier material. Protective system comprises at least one compound soluble in solvent wherein active substance cannot be dissolved. Invention covers also the method of product system fabrication and system possible applications.
 Granular modified nanostructured sorbent, method of its obtaining and composition for its obtaining / 2503496
Group of inventions relates to sorbents, which are applied in purification of water media from technogenic pollutants. Composition for preparation of granular nanostructured sorbent includes, wt %: glauconite - 20-50, intercalated graphite, which representing graphite bisulfate, - 1-5, bentonite clay - 40-70, modifier, selected from NaHCO3 - 10, or KMnO4 - 5, or NaCl - 8, and water. Method of granular nanostructured sorbent obtaining includes mixing powder-like initial components with the following addition of water until plastic mass is formed. Granulation of mass, drying of obtained granules are carried out by hot air at temperature not more than 100°C until content of water in granules is not more than 8%. After that, crushing of granules and further burning to conversion of intercalated graphite into thermally extended carbon are carried out at temperature not higher than 700°C for not more than 2 hours.
Method of obtaining calcium sulphate-based sorbent on carrier from cellulose fibres / 2523465
Sorbent contains calcium sulphate on a carrier from fibrillated cellulose fibres, which contains not less than 95 wt % of the fibres not longer than 1.20 mm and not less than 55 wt % of the fibres not longer than 0.60 mm. A method includes preparation of an initial water dispersion, which contains the said fibres and dissolved calcium chloride. The dispersion is processed with sodium sulphate. Processing results in formation of calcium sulphate particles and their immobilisation on the fibres. The quantity of immobilised calcium sulphate particles constitutes 100-1200 wt. p. counted per 100 wt.p. of the fibres.
Preparation for purification of water and soil from oil pollution and method of obtaining thereof / 2516412
Group of inventions relates to field of biochemistry, ecology, protection of the environment. Claimed is preparation for purification of water and soil from oil pollution, which contains microorganisms, oil destructors, sorbent, cryoprotector - glycerol, microfertilisers - sodium nitrate 0.5% and potassium phosphate 0.5%. As oil destructor, it contains association of oil-oxidising microorganisms: Bacillus subtilis VKM B-81, Pseudomonas spp. VKM B-892, Pseudomonas putida VKM B-1301, Rhodococcus sp. VKM Ac-950, Mycobacterium flavescens VKM Ac-1415 in amount 75-85% of the total number of cells, as well as soil bacteria Agrobacteium radiobacter VKM B-1219 in amount 15-25% of the total number of cells. Sorbent in preparation represents finely-dispersed dehydrated zeolite with size of granules 0.1-0.5 mm, powdered with Aerosil A-300 nanoparticles. Ratio of components in preparation (wt %) is the following: zeolite - 94±1, Aerosil A-300 - 3±0.5, glycerol - 1±0.2, sodium nitrate - 0.5±0.2, potassium phosphate- 0.5±0.2, association of oil-oxidising microorganisms with Agrobacteium radiobacter in efficient quantity 2-3*108 kl/g - 1±0.5. Also claimed is method of preparation obtaining. Assocoation of oil-oxidising bacteria and fraction of soil bacteria are grown separately. After that, two obtained culture liquids are mixed in ratio 75-85% of association of oil-oxidising bacteria of the total quantity of cells and 15-25% of soil bacteria of the total quantity of cells. Suspension is concentrated to concentration 2*1011 kl/ml. Zeolite is preliminarily crushed to granules with size 0.1-0.5 mm, kept in furnace at temperature 250°C to the stage of swelling, cooled to temperature 20°C at humidity 10-12% and mixed with Aerosil A-300. Glycerol, sodium nitrate, potassium phosphate are introduced into concentrated suspension, and after that mixed with zeolite. Obtained zeolite and concentrated suspension are mixed with ratio 9:1. After that process of contact-chemical dehydration is carried out.
 Sintered non-evaporating getter / 2513563
Invention relates to getter materials and particularly to sintered non-evaporating getters, and can be used in vacuum engineering and microelectronics, particularly in discharge devices. The sintered non-evaporating getter comprises three layers, wherein the first and third layers are made of titanium-vanadium alloy powder in ratio of 70:30 wt %, the second layer is made of a mixture of said alloy powder and intercalated carbon in ratio of (80:20)-(99:1) wt %, thickness of the first and third layers is 20-200 times the average particle size of the alloy powder, thickness of the second layer is 1-6 times the thickness of the first or third layer, the active area of the layers is equivalent to at least 50 times the geometrical area of the getter, wherein the porosity of the sintered getter is 30-60%.
 Method of inactivating viruses in water media / 2506232
Invention can be used for preparation of ultra-pure water, safe for consumption by people, as a result of sorption purification of drinkable water from viruses. Method includes filtration of water through zones with sorption materials, where, at least, one of zones represents porous filtering element based on resins, obtained by condensation of aldehydes with aromatic phenols and amines. Sorption material possesses the following characteristics: ratio of absolute value of zeta potential of porous filtering element to value of effective radius of liquid flow canal constitutes not less than 104 V/m. Porous filtering element, based on resin, obtained by condensation of formaldehyde with resorcin or melamine, is used as such sorption material of, at least, one of zones. Porous filtering element can preferably contain onwashed layer of sorption material, characterised by ratio of absolute value of material zeta potential to value of effective radius of flow canal not less than 105 V/m.
 Method of producing sorbent for gas chromatography / 2496572
Invention relates to analytical gas chromatography, particularly to methods of producing sorbents for analysing organic substances, including environmental pollutants. Disclosed is a method of producing a sorbent for gas chromatography, involving deposition of a binary composition, consisting of bis-(phenyl-arsinic)acid and β,β'-oxydipropionitrile, onto a solid Chromaton carrier.
 Method of making mesoporous sorbent / 2491989
Invention relates to methods of producing sorbents with a highly ordered MCM-41 type structure. Disclosed is a method of producing mesoporous materials with addition of quercetin and (+)-catechin during synthesis. The method involves preparing a reaction mixture based on Ludox-HS-40, CTABr, NaOH, H2O, quercetin or (+)-catechin. The mixture is subjected to hydrothermal treatment, washed with distilled water and a mixture of 96% ethanol with ammonium nitrate, dried and calcined at 550°C.
Method of making sorbent for collection of oil and oil products from fluid and solid surfaces / 2487751
Invention relates to sorbents used for cleaning water and solid surfaces. Modified alkyd resin is deposited on the surface of hollow silica-alumina microspheres. After deposition, sorbent is cured in air unless solid film is produced.
Sorption-filtration sandwich material and filter with such material / 2487745
Invention relates to fibrous sorption-filtration materials used for cleaning from aerosols and radioactive forms of iodine. Material comprises the following layers: layer of high-porosity fibre glass nonwoven material with fibre diameter of 5-10 mcm, layer of fibrous activated carbon material, layer of fibrous carbon material impregnated with amine compound and metal iodide, and layer of thin-fibre paper glass or of nonwoven fibrous polyamide material with fibre diameter of 100-300 nm. Material is corrugated and place in filter made up of two modules. First module comprises three layers. Second module comprises layer of fine fibrous material of paper glass or polyimide.
 Apparatus for filtering water from different sources and method of preparing sorbent material / 2484021
Invention relates to sorption treatment of water. The apparatus has a chamber, having an inlet and outlet for a liquid stream and a sorbent element which is hydrodynamically linked to the inlet and the outlet. The chamber is a composite column with a funnel, wherein the connecting parts of the top part of the column enter its bottom part. The structure is fastened by rods and bolts, and is connected to a receiving device fitted with a pump. The sorbent element is a removable cartridge with sorbent material which is placed inside the chamber and is supported by a grid. The method of preparing the sorbent material involves cutting discs from polyurethane, washing, drying and successively saturating the matrix with chemicals to form in the matrix a mixture of iron oxyhydroxide and manganese (IV) dioxide in ratio of 5:1.
 Plastic oxygen-absorbing structure / 2483931
Invention relates to making heat-sealing plastic sheet and film structures and may be used for packing oxygen-sensitive products. Proposed structure comprises, at least, two active oxygen-absorbing layers arranged as follows: fast-absorption high-activity layer including matrix polymer and oxygen absorber and long-time action layer including passive high-barrier matrix polymer and oxygen absorber. Proposed method consists in consecutive application of said layers on permanent polymer substrate from solution for water-based coatings.
Sorbent for purification of water media from arsenic and method of obtaining thereof / 2520473
Invention relates to sorbents for purification of water from arsenic. A sorbent contains substances, selected from polyvinyl alcohol, polyacrylamide, methycellulose, polyethylene glycol as a water-soluble polymer. A method of the sorbent obtaining includes mixing wastes of deironing plants, containing 10-12% of iron oxyhydroxide with a water solution of a polymer and glycerol. A mixture is processed by ultrasound, kept for 24 hours. The formed sediment is dried at 50-60°C.
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FIELD: chemistry. SUBSTANCE: sorbents are obtained by interaction of ferrous sulphate and calcium hydroxide in a water medium, which contains fibrillated cellulose fibres. Particles of iron hydroxide and calcium sulphate formed as a result of the interaction are immobilised on the fibres with formation of a sorbent. EFFECT: increased content of an active phase in the sorbent. 2 cl, 4 ex
The method of producing sorbents on the basis of iron hydroxide and calcium sulphate on the media of cellulose fibers The method relates to the technology of chemical deposition from aqueous solutions difficultly soluble inorganic compounds on various substrate media and can be used in the process wastewater and natural water that contains fluoride and other pollutants. A method of obtaining a thin layer of inorganic sorbents on the media of cellulose fibers (Ndetect, "Application of thin-layer inorganic sorbents in hydrometallurgy and radiochemistry", interuniversity collection of scientific works, Perm Polytechnic Institute, 1980, p.115-120). In this way the fibers of wood pulp is prepared media in the form of granules with a size of 0.2-0.5 mm Upon receipt of the sorbents on the basis of iron hydroxide pellets dispersed in an aqueous solution of iron salts. The dispersion is treated with an alkaline reagent precipitator, for example NaOH. As a result of reactions are formed and are in the form of solid phase particles difficultly soluble hydroxide of iron, which are immobilized on the carrier with the formation of the particles of sorbent consisting of cellulose fibers in the form of granules and particles of iron hydroxide. According to the authors of precipitated particles formed granules thin layer with good adhesion to the substrate. p> Particles of the sorbent is separated from the liquid phase by sedimentation or filtration.The disadvantage of this method is that obtained by him sorbents have a low content of the active component (AC) in the form of hydroxide of iron (5-30 mg per 1 g of sorbent). Consequently, the primary purpose of these sorbents is the retrieval of solutions of substances in diluted and ultrapassaando condition, when the full use of ion-exchange capacity is unattainable. New technical results from use of the present invention are to increase the content of active component in the sorbent and, consequently, its capacity, and expanding the range of its use, for example, for water purification from hydrogen sulfide, sulfide and fluoride or phosphate and fluoride. The above results are achieved by the fact that in the method of producing sorbents on the basis of iron hydroxide and calcium sulphate on the carrier particles of cellulose fibers, comprising preparing source water dispersion containing particles of the carrier and dissolved iron sulfate, processing it with an alkaline reagent precipitator with the formation of difficultly soluble compounds of metals of the series, containing the hydroxide of iron, and their immobilization on the carrier with the formation of particles of the sorbent, consisting of media and difficultly soluble metal compounds is s, Department of sorbent particles from the liquid phase, according to the invention as a carrier using fibrillated cellulose fibers, containing, in wt.%, at least 95% of fibers with a length of not more than 1.20 mm and not less than 55% of fibres with a length of not more than 0.60 mm, as the alkaline reagent is used, the calcium hydroxide, the number of difficultly soluble metal compounds further includes calcium sulfate, while the sorbent is composed of a carrier in the form of cellulose fibers high dispersion and immobilized them particles of iron hydroxide and calcium sulphate when the number of 100-800 parts by weight per 100 parts by weight of fiber, and iron sulfate and calcium hydroxide are taking in their stoichiometric equal amounts. Fibrillated cellulose fibers (FCW) with the above characteristics have in their water dispersion is very high sorption capacity with respect to the resulting in dispersion when the reagent processing of insoluble particles of various metal compounds in the moment of their formation. In our experiments it was found that the sorption capacity of the fibers exceeds 1500 parts by weight of metal compounds on 100 parts by weight of fibers. These fibers in the aquatic environment are also highly active in interaction with each other and the ability to quickly (10-20 seconds) to form even at low concentrations (20-30 mg/l) Flo the uly and cereals, well holding the air bubbles and therefore easily floatated to the surface of the water. These same properties, particle sorbents even with a high content of particles of metal compounds - active components and/or products of wastewater treatment. Therefore, for removing particles from the liquid phase should use pressure flotation, without the use of auxiliary substances, such as coagulants, flocculants, photoagency. Sorbents are obtained from the ratio in parts, the active component (AC)-hydroxide of iron and calcium sulfate, FCV equal 50-800:100, depending on conditions of use of the sorbent. The relationship between iron hydroxide and calcium sulfate in the sorbent corresponds to the stoichiometric equality in the reaction mixture between iron ions and calcium. The method is as follows. Preparing a suspension FCV containing, in wt %, at least 95% of fibers with a length of not more than 1.20 mm and not less than 55% of fibres with a length of not more than 0.60 mm, with a given concentration. Prepare the solutions of sulphate of iron (II) or (III) suspension of calcium hydroxide with specified concentrations. For sorbent use the installation of continuous action, containing the mixer, reactor, saturator and the flotation cell. In the mixer serves with equal space velocities of the suspension FCV with them the obsession 150-600 mg/l and a solution of sulphate of iron salt 111-1965 mg/L. The initial dispersion is sent to the reactor, which also serves with the same bulk velocity suspension of reagent-precipitator - calcium hydroxide - with its content 45-1095 mg/l In the reactor in the reaction are formed 50-1020 mg/l of particles of insoluble compounds active component (AC) in the form of particles of iron hydroxide and calcium sulphate. The particles are immobilized on VZW with the formation of the sorbent in the number 100-1150 mg/L. Then the variance of the sorbent is sent to the saturator, saturate it with air at the pressure of 2-3 ATM and from the saturator is sent to the flotation cell in which the sorbent is removed from the liquid phase in the form of flotsam. The following examples illustrate the possibilities of the proposed method. Example 1. In the mixer serves with equal volume velocities suspension FCV containing, in wt. %, at least 95% of fibers with a length of not more than 1.20 mm and not less than 55% with the length of the fibers is not more than 0.60 mm, with their content of 150 mg/l and a solution of FeSO4this salt 113,5 mg/l and get the original variance. It is directed into the reactor, in which the same rate serves as a precipitator slurry of Ca(OH)2with the content of 49.5 mg/l as a result of reactions in the reactor as AK are formed 20.0 mg/l of particles of Fe(OH)2 and 30.3 mg/l particles CaSO4. These particles are immobilized on VZW education 100,3 mg/l of sorbent, in which aspect] is the solution of AK : FCV is 100 :1 00. The sorbent is removed from the liquid phase by flotation. Example 2. In contrast to example 1, using the suspension FCV with their content of 600 mg/l, the solution of FeSO4with a salt content of 1135 mg/l suspension of Ca(OH)2its contents 495 mg/l as a result of reactions in the dispersion as AK formed particles of Fe(OH)2at 200 mg/l and CaSO4the number 3O3mg/l Particles are immobilized on VZW with the formation of 703 mg/l of sorbent in which the ratio AK : FCV equal to 250 : 100. Example 3. In contrast to example 1, using the suspension FCV their content 300 mg/l, Fe2(SO4)3with a salt content of 1347 mg/l and a suspension of Ca(OH)2it 736,7 mg/l as a result of reactions in the dispersion as AK are formed of 240 mg/l of particles of Fe(OH)3and 458,6 mg/l particles CaSO4These particles are immobilized on VZW education 799 mg/l of sorbent in which the ratio AK : FCV is 566 : 100. Example 4. In contrast to example 1 using suspension FCV their content 375 mg/l, the solution of Fe2(SC>4)3 with a salt content of 1964,43 mg/l and a suspension of Ca(OH)2its contents 1092 mg/l as a result of reactions in the dispersion as AK are formed 350 mg/l of particles of Fe(OH)3and 668,78 mg/l particles CaSO4. These particles are immobilized on VZW education 1143,78 mg/l of sorbent in which the ratio AK : FCV is 815 : 100. In examples 1-4 the liquid phase after taken the value out of the sorbent contains in solution a certain amount CaSO 4.It can be used as water for cooking, for example, suspensions of Ca(OH)4and/or iron salt solution and/or suspension FCV. The capacity of the sorbents according to examples 1-4, per 1 g of sorbent, fluorine equal 87,1, 119,7, 159,6 and 163,2 mg, respectively. These sorbents can absorb from solutions containing, in addition to fluorine, reduced sulfur compounds or phosphates, these elements in amounts proportionately equal to the content of the sorbents of iron hydroxide. Capacity of samples by sulfur, respectively, for examples, 67,3, 101,8, 150,2 and 152,7 mg or phosphorus (in terms of P2O5) - 99,5,150,6,199,9 and is 203.2 mg per g of sorbent. 1. A method of producing a sorbent-based iron hydroxide and calcium sulphate on the media of cellulose fibers, comprising preparing source water dispersion containing particles of a carrier in the form of fibrillated cellulose fibers, containing, in wt.%, at least 95% of fibers with a length of not more than 1.20 mm and not less than 55% of fibres with a length of not more than 0.60 mm, and dissolved iron sulfate, processing dispersion of calcium hydroxide with the formation of difficultly soluble particles of iron hydroxide and calcium sulphate and their immobilization on the carrier with obtaining particles of sorbent, Department of sorbent particles from the liquid phase, with the resulting sorbent contains active components in the form of immobile avannah on the fibers, the particles of iron hydroxide and calcium sulphate in the amount of wt 100-800. parts per 100 wt. parts of the above-mentioned fibers. 2. The method according to claim 1, characterized in that the iron sulfate and calcium hydroxide are taking in their stoichiometric equal amounts.
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