Sorbent for heavy metals, method of its production and method of water purification |
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IPC classes for russian patent Sorbent for heavy metals, method of its production and method of water purification (RU 2336946):
  
 Semiconductor photoelectric generator (versions) / 2336596
Invention concerns electronic technics, particularly devices converting electromagnetic emission energy into electric energy, and technologies of their manufacturing, particularly semiconductor photoelectric generators. Semiconductor photoelectric generator takes form of a matrix of commuted microphotoconverters with one or two linear dimensions comparable to diffusion length of secondary current carriers in base area; p-n transition planes are perpendicular to working surface of generator; microphotoconverter surface free of n-p transitions carries a 10-30 nm thick insulating film with 10-40 nm metal clusters positioned on it at 60-120 nm distance from each other; and dielectric layer of passivating antireflection coating is laid over nanoclusters. Two more embodiments of photoelectric generator are claimed.
 Method of obtaining nanotubular structures of oxides of vanadium or chrome subgroup (versions) / 2336230
Method of obtaining nanotubular structures includes mixing of oxygen-containing organic compound - oxalic acid hydrate with vanadium oxide gel or oxygen-containing compound of respective metal. As oxygen-containing compound of respective metal, peroxide molybdenum or tungsten oxides are used.
Heterostructure for photocathode / 2335031
Invention may be used in structures of photocathode in optoelectronic systems, secondary emission photocells, detector modules of ionising radiations, systems of images recognition, etc. According to invention, in heterostructure for photocathode that contains diamond layer of p-type conductivity with nanodimensional topological irregularities on its surface, as nanodimensional topological irregularities auto-emissive diamond points or diamond crystalline nanoparticles are used that are regularly positioned, surface of layer, except for the said irregularities, being covered with conducting amorphous carbon or nanocarbide film. Heterostructure may be installed on wafer, in which cavity is provided.
 Multipurpose biocompatible nanostructue membranulas for medicine / 2333009
The invention refers to biocompatible wearproof nanostructure thin-film materials on the basis of titan carbonitride, used as membranulas for manufacturing imlants, working under load. Total concentration of the basic and additional elements in a covering has the following ratio:
Nanocomposite material / 2332352
Invention concerns nanotechnologies and is designed for production of nanocomposite materials with efficiently adjustable optic properties, which can be applied in non-linear optics, IT, optic memory device development etc. Nanocomposite material contains nanoparticles, intermediary link molecules (particles changing their spatial configuration under the influence of external light source), and linked molecules (particles exhibiting some optic properties in vicinity of nanoparticles), all three components linked in sequence in a spatial cluster structure. Intermediary link molecules, changing their spatial configuration under the influence of external light source, can include additives - functional substitutes increasing their linking properties.
 Nanostructural lockout device of micromanipulator / 2331505
Lockout device consists of base, clamping device and lockout device working surface, produced from nanostructural material. In the base piezoelectric elements are installed in mesh-like order.
Method of sheet organic glass production for neutral light filters / 2330213
Invention is related to the field of sheet organic glass production by means of polymerisation in mass of ethers of (meth)acrylic acid, which is used for production of neutral light filters that are used in personal protection gear (glazing of protective helmets of pilots) and in glazing of sport airplanes. Method is suggested to produce sheet organic glass for neutral light filters by means of (co)polymerisation in mass of methyl methacrylate or its mixtures with methacrylic acid or its ethers in the presence of UV-absorber, initiator of radical polymerisation and light-absorbing additive - product of methane pyrolysis, which includes prepolymerisation of monomer, realisation of ultrasonic effect at prepolymer with light-absorbing additive and depolymerisation of prepared mixture in plane-parallel form until full conversion, at that as light-absorbing additive functionalised carbon nano-tubes are used with implanted COOH groups, and prepolymerisation is performed in the presence of light-absorbing additive, and prior to depolymerisation to prepared prepolymer additionally monomer is added in mass ratio 1:(0.5-1.5) accordingly.
Anti-friction polymer composition / 2329279
Invention pertains to polymer composite materials for anti-frictional purposes, which can be used for making component parts of friction assemblies of machines and equipment. Description is given of the polymer composition, containing polytetrafluoroethylene and aluminium oxide with particle size of 9-11 nm as filler material, with the following ratio of components: nano-size aluminium oxide - 0.1-2.0 mass %, polytetrafluoroethylene constitutes the remaining percentage.
 Sorbent for cleaning water off heavy metal ions / 2328341
Sorbent for cleaning water off the heavy metal ions consists of the grinded zeolite, nanophase iron hydroxide and nanophase aluminum metahydroxide at the following ratio in mass percent: 12-18 of nanophase iron hydroxide; 5-13 of nanophase aluminum metahydroxide and zeolite - the remaining.
 Thin-film material that contains functional components and method of preparation of thin-film material that contains functional components / 2326898
Invention may be used for preparation of new thin-film composite polymer materials and coatings, which are used in sensor, analytical, diagnostic and other devices, systems of atmosphere and hydrosphere condition forecasting and others. Thin-film material that contains functional components and molecules of polyelectrolites, is formed on the surface of base and is made in the form of layer or layers of poly-ionic complexes of functional components, which are connected to layer or layers of polyelectrolites, at that the quantity of functional components in poly-ionic complex more than 1.Functional components are colloidal particles. Method of preparation of thin-film material consists in performance of procedure of alternating successive layer adsorption of components from water phase on the base. At that beforehand in water phase poly-ionic complexes are formed, which include the molecules of polycations or polycation, polyanions or polyanion and functional components in the quantity of more than 1, creating stochiometric surplus of cation or anion groups of polyelectrolites and functional components and providing difference from zero of summary electrostatic charge of cation and anion groups of such complexes.
Method of obtaining sorbent for liquid hydrocarbons / 2327518
Method of obtaining a sorbent for liquid hydrocarbons based on porous materials is proposed. The method involves making a mixture of pearlite, vermiculite and zeolite, with granule size of 5-35 mm with pore dimension of 0.5-6.0 mm with total porosity not less than 50%, in the upper stream of the heated inert gas, under the effect of an acoustic ultrasonic field, hydrophobisising substance, containing high-molecular polydimethlfluorosiloxane, ethyacetate, polyamide imide, methypyrrolidone.
Method for preparing chemosorption material / 2322459
Invention relates to technology for preparing chemosorption materials possessing high protective properties with respect to ammonia vapors that can be used for using in filtering protective devices. Method involves impregnation of nonwoven activated fabric made of hydrocellulose fibers in an aqueous solution containing zinc chloride and nickel chloride. Also, this solution contains 1,2,3-propanetriol (glycerol) as a modifying agent taken in the amount 0.5-1.0% of the total amount of the prepared solution.
Method for preparing hemosorbent / 2316392
Invention relates to a method for preparing sorbents of medicinal designation. Activated carbon is treated with methyltoluenesulfonate-N-cyclohexyl-N1-(2-morpholinyl-4-ethyl)carbodiimide in the presence of melanin followed by incubation of modified carbon in the presence of glutathione. Invention provides enhancing anti-radical activity of hemosorbent.
Composite-type sorption material and a method for preparation thereof / 2313387
Invention provides material containing alumina particles having diameter 8-13 nm, length 150-200 nm, and specific surface 350-600 m2/g, prepared via hydrolysis of ultrafine alumina powder, which particles are characterized by that oxides and hydroxides of transition metals, selected from iron, manganese, titanium, zirconium, and mixture thereof, are attached to their surfaces. A method is described wherein nano-sized nonspherical alumina is prepared via hydrolysis of ultrafine alumina powder, after which solution of above-defined salt is added to resulting slurry of alumina particles, then mixture is supplemented by alkali solution, calcined, and fractioned.
 Method of modification of the hydrophobic surfaces / 2305592
The invention is pertaining to the method of modification of hydrophobic surfaces and may be used for upgrading the hydrophobic surfaces used in the scanning probe microscopy, in the immune-enzyme analysis, at development of the biochips. The method of modification of hydrophobic surfaces includes deposition on the surface of the modifying monolayer of the complex composition molecules containing the functional group, the section forming the hydrogenous ties and the hydrophobic section. At that as the functional group the molecule contains, at least, one group sampled from the following row:NH2, СООН, СНО,ONH2, SH; as the section forming the hydrogen ties the molecule contains the fragments -NH(CH2)nCO- ,where п=1-5, and as the hydrophobic section the molecule contains the fragment -(СН2)n , where n=5-12, or the similar fragment with one or several insertions of the heteroatoms sampled from the row of O, S, NH. In particular, such molecules may have the following composition[Gly4-NHCH2]2C10H20. The invention allows to ensure the high quality evenness of the modified surfaces, reproducibility of their properties and reduction of the time interval of the modification.
 Zeolite-based organomineral sorbent and a method for preparation thereof / 2284857
Inventions relate to ion-exchange sorbents based on naturally occurring zeolites modified with synthetic polymers and can be used in a variety of industry fields and when solving environmental problems associated with purification of natural water and waste waters to remove cesium and strontium radionuclids, heavy metals and ammonium, petroleum derivatives and other organics. Invention provides a method of preparing organomineral sorbent via polymerization of olefin on the surface of fine mineral particles under the influence of a catalytic system comprising metal-containing catalyst and alumoxane cocatalyst fixed on the surface of mineral particles as a result of interaction of organoaluminum compound of general formula AlRnX3-n, where R is C2-C4-alkyl, X is Cl or H, and n=2-3, with water of the fine mineral, which is notably natural zeolite with particle size below 60 μm and containing 9-15% water, above-said metal-containing catalyst being vanadium compound or zirconocene. Polymerization of olefin is conducted high-molecular weight polyolefin coating forms on the surface of zeolite in amount of 2-10% by weight. Resulting sorbent is characterized by high ion-exchange and sorption properties allowing employment thereof in carrying out sorption processes under dynamic conditions. Sorbent further possesses hardness and high chemical inertness allowing repetitive utilization thereof. Plasticity of polyolefin coating, in turn, allows manufacturing sorbent samples with desired shape and dimensions.
 Chemical absorber for rendering halogen-containing and sour gases harmless and method of making of chemical absorber / 2283176
Chemical absorber can be used for dry rendering gas mixtures harmless. Chemical absorber has timber chips processed by mixture of hydroxide water solution and sulphur-containing salt of one or more alkali metal. Degree of oxidation of sulphur in sulphur-containing salt doesn't exceed +4. Content of alkali metal hydroxide in absorber equals to 10-40 mass percent; content of sulphur is absorber equals to 1,5-6,5 mass percent. Timber chips used in absorber have thickness less or equal to 1 mm, width of 2 mm and wider and length of 50 mm and longer. To prepare chemical absorber, timber chips are soaked in hydroxide and sulfite and/or thiosulphate of alkali metal solution, kept in till swelling, impregnated and are subject to drying.
 Chemical absorber of sour gases and method of manufacture of sore gases absorber / 2283175
Chemical absorber has base of timber chips processed by hydroxide water solution of one and more alkali metal till achieving alkali metal content in absorber up to 10-50 mass percent. Timber chips have thickness less or equal to 1 mm, width of 2 mm and wider and length of 50 mm and longer. To prepare chemical absorber, timber chips are soaked in solution, kept in till swelling, impregnated by alkali agent and are supposed to drying till achieving humidity of 10-15 mass percent. Absorber is capable of catching HF, SO2, CO2, HCl and other sore gases.
Method of production of composite sorption materials / 2281160
Proposed method includes electrochemical treatment of carbon fibrous material at cathode or anode polarization at interval of potentials of (+1.5) to (-1.5) V relative to comparison silver chloride electrode by 0.05-0.5% chitosan solution in diluted hydrochloric acid in presence of sodium chloride, holding it at preset potential for 20-180 min for forming chitosan film on surface of carbon fibrous material followed by washing the material with water and drying.
Water treatment sorbents preparation method / 2277013
Invention can be used for treating drinking or industrial water with high levels of heavy metal ions and polar organics, in particular dyes. Method comprises treatment of naturally occurring aluminosilicate (zeolite, swollen vermiculite, or mixture thereof) with chitosan solution in dilute acetic acid at aluminosilicate-to-chitosan solution weight ratio 1:1 and final supernatant pH value 8-9. Resulting plastic mass is granulated by extrusion through specified-size dies, granules obtained are dried and then treated with solution of humin acids taken in amount ensuring full binding of chitosan amino groups. Thereafter, sorbent granules are separated from solution and polymer layer formed on the surface of granules is hardened.
 Sorbent "С-КП" for atmospheric air purification / 2336945
Sorbent is obtained by feathering of silted, granulated and dried clay with pyrolusite with further burning. Sorbent is active with respect to oxides of nitrogen, carbon and sulfur, as well as formaldehyde and butylmercaptane.
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FIELD: chemistry. SUBSTANCE: claimed is sorbent, made in form of granules of highly-porous aluminium oxide with pore volume not less than 0.55 cm3/g, specific surface not less than 200 m2/g, representing assembly of nanofibres, connected together into rigid spongy structure and containing nano-sized particles of iron oxides, formed as layer on the surface of said granules in amount 2-10% from granules weight. Sorbent is obtained by impregnation of porous base with solution of iron compounds with further processing with alkali. EFFECT: sorbent has high capacity and mechanical strength. 17 cl, 2 ex, 2 dwg
The invention relates to the purification of water from heavy metal ions, preferably arsenic, and can be used in complex treatment of drinking water. Currently, the use of adsorption processes for removal of water pollutants of organic and inorganic origin are of great importance in practice. One of the most active adsorbents arsenic and other heavy metals is activated alumina. Known adsorbent and method thereof with high capacity for phenols and heavy metals [EN 2168357 C2, 2001], to this end, in the patent of the proposed processing of nanofibers formed from ultra-fine aluminium powder obtained by electrical explosion of aluminum wire in argon, sodium bicarbonate within 0.5 to 1:5 h with subsequent calcination at 200 to 300°within 1.5-3 hours However anovulatory sorbent in the form of a powder consists of agglomerates of nanofibers with a size of about 0.1 μm and a diameter of about 0,005 µm, which makes it impossible for its application in dynamic treatment systems, due to entrainment by the flow of water separate particles and high hydrodynamic resistance. In the manufacture of adsorbents for removal of the water of heavy metals in the number of patents introduces an additional phase - active carbon [US 4,923,843, WO 03043731, S 6,030,537], hydrated oxide of trivalent iron, manganese compounds. Known sorbent and method thereof [EN 2242276 C1, 2004]. The sorbent consists of non-spherical particles of aluminum oxide and particles of fibrous material contains a component with a negative surface charge and a modifier selected from a number of oxide or hydroxide of magnesium, silicon or mixtures thereof in the following ratio, wt.%: aluminum oxide is not less than 20; a component with a negative surface charge - 0,5-5,0; modifier - 0,1-3,0; fibrous material - the rest. As a component with a negative surface charge using the oxide or hydroxide of silicon, iron, manganese, chromium or their mixtures. The essence of the method is that non-spherical particles of aluminum oxide are mixed with particles of fibrous material before mixing the two components to the fibrous material add a component with a negative surface charge, in the process of mixing the three components of the activation mixture received electric shock or ultrasound, then enter the modifier, selected from a number of oxide or hydroxide of magnesium, silicon, or mixtures thereof, and over all mix. The sorbent contains three components - aluminium oxide particles, fibrous material and a component with a negative surface charge that can not condition the thread technology of its manufacture. The sorbent is a mechanical mixture of the components, and therefore has a relatively small capacity remove heavy metal ions. In the application [US 2005029198], an adsorbent for water purification systems from heavy metals, which are a mixture of fibers of nanoaluminum and compounds of iron and/or manganese. Based on the size of the nanofibers, we can assume that under dynamic conditions the operation of the sorbent would be difficult or impossible. In the invention [US 4,459,370 B1, 1984] "the Process of preparation of the catalyst or adsorbent based on the 3-valence iron oxide, the iron oxide is prepared from a solution of iron salts by reaction of the hydroxyl ions and iron in the presence of the media. Charged thus the carrier is dried, calcined and crushed. A solution of iron salts introduced with vigorous stirring under the surface of the carrier. the pH of the suspension support 4-7. Share charged iron carrier from the solution. In the patent iron salts are applied to the surface of the carrier, which is then made red-hot and homogenized. When the specified method is part of the carrier surface may not be coated with iron hydroxide. Accordingly, the efficiency of such a sorbent is lower than the efficiency of the sorbent, originally consisting of separate particles. Also the media is not pre-AK is viravan, that reduces the effectiveness of the application of the hydroxyl ions of iron and consequently reduces the efficiency of sorption. In [WO 03043731, 2003] proposed medium for removing arsenic from aqueous systems, including bauxite, alumina trihydrate and iron oxide. The mixture after certain operations and then calcined to form small granules. The disadvantages of the proposed method include the fact that the source of the aluminium oxide particles have a size of the order of micrometers or more, have relatively low specific surface area and, consequently, low sorption capacity in relation to nanoscale particles. As the prototype is set to [RU 2225251 C2, 2004], in which the proposed product for water treatment, representing consisting of a particulate material having a specific surface area equal to at least 10,0 m2/g, or the product obtained by linking such consisting of a particulate material, and having an insoluble coating of hydrated ferric oxide. Preferably, consisting of a particulate material is a material based on aluminum oxide. The product is effective in water treatment to remove organic compounds, cations or anions, especially As, Se, or F. In this patent application of ferric oxide is carried out on particles, have their size from 5 μm to 5000 μm, with a maximum specific surface area of at least 100 m2/year Used carrier is a porous material obtained by heating particles of aluminum oxide, and consists of particles with a size of 5-10 μm and has a specific surface equal to 100-150-200 m2/, However, the surface of such particles is not fully available, the portion of the surface, especially in closed pores are not available for the deposition of metals. This limits the sorption capacity of the material and reduces the rate of adsorption in dynamic operating conditions of the sorption material. The method of applying iron oxide does not allow to obtain the sorption layer having a high sorption characteristics. The objective of the proposed group of inventions is to develop a new sorbent material (sorbent) with high sorption capacity with respect to heavy metals, primarily arsenic, with low hydrodynamic resistance and high mechanical strength. An additional advantage of the proposed sorbent is its ability to effectively remove arsenic at high pH water. This object is achieved in that the proposed sorbent of heavy metals, preferably arsenic, contains aluminum oxide-modified nanoscale particles is of xadow iron. What's new is that it is made in the form of granules of highly porous alumina with a pore volume of not less than 0.55 cm3/g, a specific surface area of not less than 200 m2/g, which is an Assembly of nanofibers that are interconnected in a rigid sponge-like structure, with nanosized particles of iron oxides formed in a layer on the surface of the above-mentioned granules in the amount of 2-10% by weight of the granules. In addition, the aluminum oxide is in the form of granules, preferably of spherical shape with a particle size having a diameter of 0.2 to 4.0 mm In addition, as a material based on aluminum oxide it contains γ-Al2About3. In addition, as a material based on aluminum oxide it contains the monohydrate alumina. In addition, nano-sized particles of iron oxide has a ratio of diameter d to the length 1, located within: 1≥d/1<0,01. In addition, nano-sized particles of iron oxide are nanosized particles, for example, goethite and/or hematite and/or akaganeite. In addition, the amount of nano-sized particles of iron oxide is not less than 2-10% by weight of the base. The task is achieved by the fact that, as known, the claimed method of producing a sorbent of heavy metals, preferably arsenic, includes soaking the porous framework of water is a solution of compounds of iron, subsequent addition of alkali solution. What's new is that as a porous framework using granules of highly porous alumina with a pore volume of not less than 0.55 cm3/g, a specific surface area of not less than 200 m2/g, which before impregnation with an aqueous solution of iron compounds is subjected to wetting by water. In addition, the granules of aluminum oxide have a spherical shape, a diameter of 0.2-4.0 mm and represent the Assembly of nanofibers that are interconnected in a rigid sponge-like structure. In addition, as a material based on aluminum oxide using γ-Al2O3. In addition, as a material based on aluminum oxide monohydrate use of aluminum oxide. In addition, as an aqueous solution of iron compounds using a ferric chloride solution with a concentration of 400 to 800 g/l In addition, as the alkali solution used solution of sodium hydroxide with a concentration of 40-400 g/l In addition, the impregnation is carried out at periodic stirring of the solution. In addition, the sorbent is washed and dried. The method of purification of water, preferably drinking water from heavy metal ions, preferably arsenic, comprising passing water through a layer above the sorbent, containing as the base particles of the material based on aluminum oxide is INIA, made in the form of granules, preferably of spherical shape, with a specific surface area of not less than 200 m2/g and a pore volume of not less than 0.55 cm3/g, and the particles modified with nanosized particles of iron oxide using the above method. In addition, it involves passing water containing soluble arsenic ions when the pH value of water is not less than 8. In addition, it provides for the transmission of water, additionally containing heavy metal ions selected from the group consisting of chromium, copper, manganese, selenium, fluorine. The sorption efficiency of the sorbents of different origin is mainly determined by the activity of the sorbent surface and its area. The analysis of publications related to thesis leads to the conclusion that the most important direction in the development of new high-performance sorbents is the use of nanoscale materials with high surface activity and a large area available specific surface area. A characteristic feature in the development of modern sorption materials is the application of the sorption layer (coating) on the surface of the granular material of the carrier. This technology makes it possible to avoid a complex, multistage, environmentally unfriendly process of preparation of the sorbent. Moreover, the traditional process of why the case cannot take place under strictly controlled conditions the synthesis of the sorbent and get the sorbent with the desired set of mechanical and sorption properties [Iagazinov, Vperez. Sorption materials on media in the technology of water treatment.//Chemistry and technology of water. 1995, V.17. 31, p.50-60]. To increase the same ion exchange capacity of the sorption material as the second active component of the sorption layer (coating) is widely used iron oxides, which have found application to retrieve from the water of many elements, including arsenic, chromium, fluoride, etc. According to the literature data [W. Driehaus, Jekel M. and Hildebrandt U.: Granular ferric hydroxide - a new adsorbent for the removal of arsenic from natural water. J. Water Supply: Results and Technology - Aqua. 1998. 47, p.30-35] iron oxides are one of the most effective sorbents of toxic elements, including arsenic. The deposition of iron oxides in the form of nanoparticles on the surface of the carrier allows you to get the sorbent with a high rate of adsorption and sorption capacity. In the present invention, a method for sorbent, wherein on the surface of a granular material based on aluminum oxide with a highly porous structure layer is formed, representing the nano-sized particles of iron oxide. The applicable basis is highly porous aluminum oxide in the form of pellets, derived from nano-sized aluminum oxide, for example, obtained by mechanochemical methods that enhances sorption sorption properties of active component, for example iron oxide. Pellets have and the geta a large pore volume is not less than 0.55 cm3/g and a high specific surface area of not less than 200 m2/g and represent the Assembly of nanofibers, connected with the formation of a hard sponge-like structure. This oxide retains basically the original structure of nanosized particles and is the matrix for the synthesized nano-sized particles of iron oxide. One of the distinguishing features of the process of obtaining a pre-wetting granules. This is because when wetted granules consisting of aluminum oxide, stands out quite a lot of heat. When the local temperature rise inside the granules of the iron chloride is spontaneously hydrolyzed with the formation of hydroxides. The process of hydrolysis is in uncontrolled conditions, to avoid this, slow down the process of spontaneous hydrolysis and must be pre-wetting granules. Iron ions are able to penetrate inside the pores of the granules, not to close the resulting iron hydroxide in the pores, to form particles of oxides of the desired shape having a large adsorption capacity. To control the properties of the medium, in which there is the formation of iron oxide added to the alkali solution. Adding alkali to the mixture begins recrystallization of iron hydroxide with the formation of certain phases of iron oxides - goethite, heme is Titus, akaganeite in the form of nanoscale particles as spherical and non-spherical shapes, such as needles [Ryzhak I.A., Krivoruchko OP, Buyanov R.A., and others, the Study of Genesis hydroxide and ferric oxide. // Kinetics and catalysis, 1969, vol.10, No. 2, s-385]. Recrystallization of iron hydroxide formed by adding sodium hydroxide, goethite occurs at high pH values not less than 12, hematite at pH not less than 8. The obtained particles of iron oxides according to x-ray phase analysis have a nano and form a layer of deposited particles on the carrier surface. High mechanical strength and low hydrodynamic resistance is ensured by the choice of the source material carrier having such properties due to the method of its receipt. In the process of preparing granules of the medium shown in example 1, the original aluminum oxide processed binding reagent and calcined, which gives the pellets a high mechanical strength is not less than 8 MPa. The choice of the form of granules, their sizes are determined by the requirements of the application depends on the capacity and performance of the treatment facility. The smaller the size and performance of a purification system (filter), the smaller can be the size of the granules. Natural water to be treated, often has a pH value of 8 or more. Typically, Orbeta at this pH have a small capacity for arsenic. Add reagents that reduce the pH of the water, it is difficult - it is necessary to determine the initial pH of the water to calculate the necessary amount of reagent, usually acid, and mix with water. It is preferable to use a sorbent working at high pH values. Obtained according to the invention, the sorbent exhibits a large capacity at these pH values. The invention is illustrated graphics. Figure 1 shows the comparison results of the sorption properties of the sorbent, obtained according to the present invention and sorbent Bayer AG. Figure 2 shows the comparison results of the hydrodynamic properties of the sorbent, obtained according to the present invention and sorbent Bayer AG. The invention is further illustrated by examples of sorbent and examples of its use for water purification. Example 1. As the substrate used granulated (form of spherical granules) γ aluminium oxide with a diameter of 0.2-0.8 mm, with a specific surface area of 220 m2/g, pore volume of 0.56 cm3/g, the strength of 8.1 MPa, produced by JSC "Catalyst", Novosibirsk. 1.00 kg of pellets filled in a 1.00 l of water so that they are covered completely. To wet granules was added to 1.00 l solution of ferric chloride (FeCl3) with a concentration of 480 g/l was kept for 2 hours, periodically stir the mixture. Then poured the excess liquid with granules and the granules was added 4,00 l NaOH solution with a concentration of 80 g/L. Next, the mixture was heated at a temperature of 70°C for 24 hours. The resulting sorbent was washed with deionized water, dried at room temperature. The resulting sorbent in the form of granules of spherical shape contained 8.5% of goethite in relation to the weight of the sorbent. The particle size of goethite (I) was in the range of 10 nm<l<200 nm. Specific surface area of 220 m2/g and a volume porosity of the finished sorbent of 0.56 cm3/year Example 2. Obtained in example 1 sorbent was tested for the removal efficiency (absorption) of arsenic from water. The addition of sorbent, obtained in example 1, weighing 1.0 g was placed in a stainless steel column 4 mm diameter and was passed solution of sodium arsenate with a pH of 8.5-8.7 and arsenic of 50 micrograms/l with a speed of 1.2 to 1.4 ml/min, inlet water pressure in the column is 0.2 - 0.5 bar. The rate of water flow corresponds to the flow of water, as defined by the international standard NSF/ANSI 53-e. The concentration of arsenic in the source solution and after passing water through a bed of the sorbent was determined using a test kit Arsenic Test Kit, which you can use to determine the arsenic concentration in the range of 1-300 μg/L. the Results of tests of sorbent in the sorption capacity and hydrody amichelle resistance shown in figures 1 and 2. 1. The sorbent of heavy metals, preferably arsenic containing aluminum oxide modified with nanosized particles of iron oxides, characterized in that it is made in the form of granules of highly porous alumina with a pore volume of not less than 0.55 cm3/g, a specific surface area of not less than 200 m2/g, which is an Assembly of nanofibers that are interconnected in a rigid sponge-like structure, with nanosized particles of iron oxides formed in a layer on the surface of the above-mentioned granules in the amount of 2-10% by weight of the granules. 2. The method according to claim 1, characterized in that the alumina is in the form of granules, preferably of spherical form, with a particle size having a diameter of 0.2 to 4.0 mm 3. The sorbent according to claim 1 or 2, characterized in that the aluminium oxide it contains γ-Al2O3. 4. The sorbent according to claim 1 or 2, characterized in that the aluminium oxide it contains the monohydrate alumina. 5. The sorbent according to claim 1, characterized in that the nano-sized particles of iron oxide has a ratio of diameter d to the length of 1 within 1≥d/1<0,01. 6. The sorbent according to claim 1 or 5, characterized in that the nano-sized particles of iron oxide are nanosized particles, such as goethite and/or hematite, and/or cenogenics. 7. A method of producing a sorbent of heavy metals,preferably arsenic, includes soaking the porous framework with an aqueous solution of compounds of iron, followed by adding a solution of alkali, characterized in that the porous framework using granules of highly porous alumina with a pore volume of not less than 0.55 cm3/g, a specific surface area of not less than 200 m2/g, which before impregnation with an aqueous solution of iron compounds is subjected to wetting by water. 8. The method according to claim 7, characterized in that the granules of aluminum oxide have a spherical shape, a diameter of 0.2-4.0 mm and represent the Assembly of nanofibers that are interconnected in a rigid sponge-like structure. 9. The method according to claim 7 or 8, characterized in that the quality of the material based on aluminum oxide using γ-Al2About3. 10. The method according to claim 7 or 8, characterized in that the quality of the material based on aluminum oxide monohydrate use of aluminum oxide. 11. The method according to claim 7, characterized in that an aqueous solution of iron compounds using a ferric chloride solution with a concentration of 400 to 800 g/l 12. The method according to claim 7, characterized in that the alkaline solution using sodium hydroxide solution with a concentration of 40-400 g/l 13. The method according to claim 7, characterized in that the impregnation is carried out at constant stirring of the solution. 14. The method according to claim 8, characterized in that the sorbent prom is live and dried. 15. The method of purification of water from heavy metals, preferably arsenic, characterized in that involves passing water through a bed of sorbent of heavy metals according to claims 1-6. 16. The method of purifying water according to § 15, characterized in that it involves passing water containing soluble arsenic ions when the pH value of water is not less than 8. 17. The method of purifying water according to § 15, characterized in that it provides for the transmission of water, additionally containing heavy metal ions selected from the group consisting of chromium, copper, manganese, selenium, fluorine.
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