カテゴリー「contamination and decontamination」
Author: A.G. Anshits, T.A. Vereshagina, E.N. Voskresenskaya, E.M. Kostin, V.F. Pavlov, Yu.A. Revenko, A.A. Tretyakov, O.M. Sharonova, A.S. Aloi, N.V. Sapozhnikova, D.A. Knecht, T.D. Trenter, E. Macheret
Reference: Patent, 10.10.2002, Krasnoyarsk patent holder: Institute of chemistry and chemical technology (RAS), Mining and chemical combine, V.G. Khlopin Radium Institute
Keywords: liquid waste, solidification
Abstract: Summary of invention: for solidification of liquid radioactive wastes, porous glass-ceramic blocks are applied, which is formed from hollow glass-ceramic microsphere, extracted from the fly ash from combustion of fossil fuels. The block operates as a sponge and is characterized by a high value of open porosity of uniform pore structure.
URL: http://www.findpatent.ru/patent/219/2190890.html
Author: A.M. Kropachev, I.I. Kropachev
Reference: Patent, 15.12.2004, Perm patent holder: Perm State University
Keywords: soil, cesium 137, strontium 90, chemical treatment, plants
Abstract: The method of cleaning consists of infusion of chemical materials into the soil. Topsoil is covered by limestone or dolomite flour (5-6 tons per hectare), with potash KCl, KNO3 or KMgCl 3.6 H2O in an amount of not less than 200 kg per hectare. This process is followed by plantation of mixture of perennial grasses, which are mowed in autumn and placed in storage, precluding the migration of radionuclides.
URL: http://www.findpatent.ru/patent/227/2278428.html
Author: S.Yu. Bratskaya, V.A. Avramenko, V.I. Sergienko, Yu.P. Korchagin, A.M. Egorin
Reference: Patent, Vladivostok, 27.12.2009, patent holder: Institution of the Russian Academy of Sciences, Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences
Keywords: colloidally-stable nanosorbent, decontamination, soil
Abstract: The invention relates to environmental protection, namely, to the decontamination of soil, ground, sand, ion-exchange resins, slag and other solid granular wastes. It can be applied in nuclear power plants, radio-chemical industries, and territories affected by anthropogenic catastrophe and accidental spills of liquid radioactive waste. The colloid-resistant nano sorbent for decontamination of solid granular materials comprises reaction product, combined with an equivalent amount of cations from the group of transition metals and hexacyanoferrate anion, which are precursors of sorbent formed among stable carboxyl polymer colloid.
URL: http://www.findpatent.ru/patent/240/2401469.html
Author: V.A. Chemezov, R.S. Karimov
Reference: Patent, 24.05.2010, Ekaterinburg patent holder: Sverdlovsk Research Institute of Chemical Engineering
Keywords: treatment, metal, graphite, flux
Abstract: The invention is aimed to be used in nuclear power plants, nuclear industries and points of radioactive waste disposal. The treatment includes loading of the contaminated metallic waste and flux into the furnace, melting of metallic waste and removing of the melt and slag flux from the furnace. Before loading the waste and the flux into the furnace, layer of radioactively contaminated graphite is loaded and it is ignited in oxidizing medium, generated by the plasma of plasma torch furnace. Then, plasma torch is turned off and the fragmented metallic waste is loaded into the furnace, downward, from top to bottom, alternately by each layer.
URL: http://www.findpatent.ru/patent/243/2435241.html
Author: I.A. Sobolev, L.B. Prozorov, N.I. Komarova, T.V. Molchanova
Reference: Patent, 10.07.2000, Moscow patent holder: Moscow State Enterprise – Joint Environmental-Technological Research Center for the disposal of radioactive waste and the protection of the environment (SIA “Radon”)
Keywords: cesium, soil, decontamination, hydrofluoric and / or fluosilicic acid
Abstract: The invention relates to environmental protection and is aimed to be used for decontamination of soil from radionuclide cesium. Technical results: expansion of the scope, as well as increase of extent, speed and security of implementation. For the decontamination an aqueous solution is applied. The solution is a mixture of oxalic acid concentration, of at least 0.5 M, and water soluble ammonium, potassium or sodium salt of hydrofluoric and / or fluosilicic acid.
URL: http://www.findpatent.ru/patent/215/2152650.html
Author: V.P. Glinsky, T.N. Krutikova, B.V. Matseyevich, S.V. Menzelenko, V.D. Mikhailov, N.V. Sagarda, N.M. Sorokin
Reference: Patent, 20.01.2003, Krasnoarmeisk patent holder: Krasnoarmeisk Scientific Research Institute of Mechanization
Keywords: decontamination, skin, hair, laundry, surfaces
Abstract: The invention relates to field of medicine, in detail, to cleaner for hygienic purposes. It is meant to clean skin and hair of the human body, laundry in the rinsing step and surfaces of various materials. The cleaner contains trilon B, water, lactoserum, ascorbic or citric or salicylic acid, in the following component ratio, wt. %: lactoserum: 3.0~6.0, ascorbic or citric or salicylic acid: 0.1~0.5, trilon B: 0.1~0.5, water: the rest. In addition, the cleaner may contain the followings: humate, mineral acid, glycols and surfactants.
URL: http://www.findpatent.ru/patent/219/2196567.html
Author: O.G. Chernikov, E.K. Gorbunov, L.V. Shmakov, K.G. Kudrayvtsev, K.V. Grigoryev, G.A. Chumachenko, V.I. Zaika, A.N. Fursov
Reference: Patent, 08.16.2006, Sosnovyi Bor patent holder: The Federal State unitary enterprise ‘Russian state concern for generation of electric and thermal power at nuclear power plants’ (Rosenergoatom)
Keywords: silicon, decontamination, alkaline solution, sodium hydroxide
Abstract: The invention relates to decontamination of radiation-exposed silicon and can be applied in industrial production of power reactors. During sequential two-step process with oxidative alkaline solution, containing sodium hydroxide, and solution of oxalic acid in both steps, oxidizing solutions based on hydrogen peroxide are utilized. The second stage is conducted not later than 5÷30 minutes after the first one.
URL: http://www.findpatent.ru/patent/233/2332732.html
Author: G.V. Beklemyshev, V.M. Kondakov, V.G. Balakhonov, V.S. Zagumennov, S.G. Sulima, G.G. Shadrin, S.A. Zhitkov
Reference: Patent, 13.09.2004, Seversk patent holder: Siberian chemical combine
Keywords: liquid waste, deactivation
Abstract: The invention relates to deactivation of liquid radioactive waste. It consists of alkaline deposition, in the presence of calcium and / or magnesium and phosphate ion, and the separation of the precipitate. The process is conducted in sequential deposition in two stages at a constant pH level of: 4-5 in the first stage and 7-9 in the second. Advantages of the invention are the increase of degree of purification and the reduce of reagent consumption.
URL: http://www.findpatent.ru/patent/227/2276415.html
Author: A.M. Aleshin, B.A. Gusev, V.M. Krasnoperov, I.S. Orlenkov, S.M. Kovalev, E.P. Kozlov, V.M. Tishkov, S.N. Kharakhnin
Reference: Patent, 30.10.2006 patent holder: State enterprise scientific-research centre of technology named after A.P. Aleksandrov, The Federal State unitary enterprise ‘Russian state concern for generation of electric and thermal power at nuclear power plants’ (Rosenergoatom)
Keywords: primary circuit, equipment, cleaning
Abstract: The invention can be applied for the deactivation of equipments of the primary circuit of a nuclear power plant. The deactivation is conducted in the presence of chemical reagents
URL: http://www.findpatent.ru/patent/233/2331125.html
Author: V.N. Epimakhov, M.S. Oleinik, T.V. Epimakhov, V.V. Trofimov
Reference: Patent, 01.12.2009 patent holder: State enterprise scientific-research centre of technology named after A.P. Aleksandrov
Keywords: liquid waste, cementing
Abstract: The invention relates to treatment of liquid radioactive waste. In a container, with non-radioactive cement compound, which plays the role of radiation shield, a filter with selective sorbent is installed. After establishing the resource of the filter, which is not aimed to be regenerated, with protection (filter-container) on disposal through the filter with selective sorbents, a thin Portland-cement slurry, with water cement ration not less than 10 percent, is pumped for cementing the monolith of the exhausted sorbent.
URL: http://www.findpatent.ru/patent/241/2410779.html
