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Biodiesel production from sediments of a eutrophic reservoir / A. Kuchkina [et al.] // Biomass and Bioenergy. - 2011. - Vol. 35, Is. 5. - P2280-2284, DOI 10.1016/j.biombioe.2011.02.047 . - ISSN 0961-9534
Кл.слова (ненормированные):
Biodiesel -- Dredging sediments -- Eutrophic reservoir -- Fatty acids -- Lipids -- Bio-diesel fuel -- Biodiesel production -- Cetane number -- Dry weight -- EN 14214 -- Eutrophic reservoirs -- Heat of combustion -- High price -- Iodine number -- IS costs -- Lake restoration -- Lipid content -- Production cost -- SIBERIA -- Anoxic sediments -- Biodiesel -- Costs -- Diesel fuels -- Eutrophication -- Fatty acids -- Iodine -- Lipids -- Reservoirs (water) -- Sedimentology -- Synthetic fuels -- Thermochemistry -- Dredging -- biofuel -- combustion -- dredging -- environmental restoration -- eutrophic environment -- iodine -- lacustrine deposit -- lipid -- production cost -- reservoir -- Bugach Reservoir -- Krasnoyarsk [Russian Federation] -- Russian Federation
Аннотация: Sediments from eutrophic reservoir Bugach (Siberia, Russia) were tested for possibility to produce biodiesel. We supposed that the sediments could be a promising biodiesel producer. The major reason of high price of biodiesel fuel is cost of a raw material. The use of dredging sediments for biodiesel production reduces production costs, because the dredging sediments are by-products which originated during lake restoration actions, and are free of cost raw materials. Lipid content in sediments was 0.24% of dry weight. To assess the potential of from sediments as a substitute of diesel fuel, the properties of the biodiesel such as cetane number, iodine number and heat of combustion were calculated. All of this parameters complied with limits established by EN 14214 and EN 14213 related to biodiesel quality. В© 2011 Elsevier Ltd.

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Держатели документа:
Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russian Federation
Institute of Biophysics Siberian Branch of RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kuchkina, A.; Gladyshev, M.I.; Sushchik, N.N.; Kravchuk, E.S.; Kalachova, G.S.

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First data on the uranium content in water of the Yenisei River basin in the area affected by the operation of Rosatom plants / A. Y. Bolsunovskii [et al.] // Doklady Earth Sciences. - 2011. - Vol. 439, Is. 1. - P1010-1015, DOI 10.1134/S1028334X11070208 . - ISSN 1028-334X
Кл.слова (ненормированные):
Inorganic chemistry -- Isotope ratio -- Isotopic composition -- Long term monitoring -- River basins -- Russian Academy of Sciences -- Uranium contents -- Uranium isotopes -- Water samples -- Effluents -- Inorganic compounds -- Isotopes -- Mass spectrometry -- Nuclear fuels -- Rivers -- Uranium -- Watersheds -- Water content -- effluent -- environmental monitoring -- isotopic composition -- isotopic ratio -- mass spectrometry -- tributary -- uranium isotope -- Russian Federation -- Yenisei River
Аннотация: This study is devoted to investigating the content of uranium isotopes in water of the Yenisei River and its tributaries within the territories affected by the operation of Rosatom plants (mining chemical combine, and electrochemical plant). Long-term monitoring of the 238U content by mass spectrometry carried out in two institutes of the Siberian Branch of the Russian Academy of Sciences first revealed the multiple excess of 238U over the background content in different areas of the Yenisei River basin, such as the region of the Yenisei River near the effluents of the mining and chemical combine (MCC), and the territories of the Bol'shaya Tel' and Kan rivers. In these regions, the 238U content in water reaches 2.1-4.0 ?g/l, which exceeds its content upstream from the MCC (0.3-0.6 ?g/l) by almost an order of magnitude. The studies of the isotopic composition of uranium in water samples, which were carried out at the Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, showed the presence of a technogenic isotope of uranium 236U in the samples from the Bolshaya Tel' River and revealed the deviation of the isotope ratio 238U/ 235U (167 В± 3 and 177 В± 3) from the equilibrium natural ratio ( 238U/ 235U = 138). These facts attest to the technogenic origin of part of the uranium in water of the Bol'shaya Tel' River connected with the activity of MCC. The excess uranium content in the Kan River requires additional studies to ascertain the fraction of uranium of technogenic origin connected with the activity of the electrochemical plant (ECP) (Fig. 1, Table 4). В© 2011 Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Engineering, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovskii, A.Y.; Zhizhaev, A.M.; Saprykin, A.I.; Degermendzhi, A.G.; Rubailo, A.I.

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Fatty acid content and composition of sediments from Siberian eutrophic water bodies: Implications for biodiesel production / N. N. Sushchik, A. Y. Kuchkina, M. I. Gladyshev // Water Research. - 2013. - Vol. 47, Is. 9. - P3192-3200, DOI 10.1016/j.watres.2013.03.031 . - ISSN 0043-1354
Кл.слова (ненормированные):
Biodiesel -- Bottom sediments -- Fatty acids -- Fuel properties -- Inland water bodies -- Lipids -- Biological conditions -- Bottom sediments -- Environmental characteristic -- Freshwater reservoirs -- Fuel properties -- Inland waters -- Organic matter source -- Transformation process -- Biodiesel -- Eutrophication -- Fatty acids -- Feedstocks -- Fuels -- Lipids -- Reservoirs (water) -- Sedimentology -- Thermochemistry -- Sediments -- biodiesel -- fresh water -- iodine -- organic matter -- biofuel -- bottom water -- combustion -- eutrophic environment -- eutrophication -- fatty acid -- lacustrine deposit -- physicochemical property -- reservoir -- transformation -- article -- estuary -- eutrophication -- fatty acid analysis -- lake -- lipid composition -- priority journal -- sediment -- Khakassia -- Krasnoyarsk [Krasnoyarsk (ADS)] -- Krasnoyarsk [Russian Federation] -- Lake Shira -- Russian Federation
Аннотация: We studied lipids and fatty acids (FA) in bottom sediments from four Siberian water bodies, Bugach, Lesnoi and Krasnoyarsk freshwater reservoirs and brackish Shira lake, that differed in physico-chemical and biological conditions. We considered the potential of the bottom sediments as a feedstock for biodiesel production and estimated properties of the obtained biodiesel as a fuel on the basis of FA composition. Contents of lipids and FA in the sediments moderately varied and were generally close to the reported data from lacustrine and estuarine systems. We confirmed that long-term eutrophication of a water body resulted in the lipid-rich bottom sediments that make them a feedstock for biodiesel production. Each of the studied water bodies had specific FA composition of sediments likely due to different organic matter sources and transformation processes. Despite these differences in FA profiles, calculated key parameters (cetane number, iodine number and heat of combustion) of biodiesel produced from all the studied sediments met the limits established by current biodiesel standards. Thus, the variation in the sediment FA composition due to environmental characteristics of a water body likely has no principal significance for fuel properties of the obtained biodiesel. В© 2013 Elsevier Ltd.

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Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok 50/50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sushchik, N.N.; Kuchkina, A.Y.; Gladyshev, M.I.

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Radioactive particles in the Yenisei River floodplain (Russia): Characterization, leaching and potential effects in the environment / A. Bolsunovsky, M. Melgunov // J. Environ. Radioact. - 2019. - Vol. 208-209, DOI 10.1016/j.jenvrad.2019.105991 . - ISSN 0265-931X
Кл.слова (ненормированные):
Fuel particles -- Incidents at plutonium reactors -- Leaching experiments -- Low doses -- Plant bioassays -- The Yenisei river floodplain -- Aquatic ecosystems -- Aquatic organisms -- Banks (bodies of water) -- Floods -- Fuel gages -- Fuels -- Gamma rays -- Leaching -- Plutonium -- Radiation effects -- Radioactivity -- Radioisotopes -- Flood plains -- Fuel particles -- Leaching experiments -- Low dose -- Plant bioassays -- Rivers -- Elodea canadensis
Аннотация: The operation of the Mining-and-Chemical Combine (MCC), the largest producer of weapons-grade plutonium in Russia, has resulted in radioactive contamination of the Yenisei River floodplain. Investigations carried out in Novosibirsk and Krasnoyarsk institutes have shown that the floodplain of the Yenisei downstream of the MCC is contaminated by radioactive particles (RP) of various types and activities. Analytical characterization of the RP showed that most of them were fuel particles, which were carried into the Yenisei after incidents at the MCC reactors. The plutonium and caesium isotope ratios (238Pu/239,240Pu; 137Cs/134Cs) vary substantially between the particles, indicating different source terms and time intervals when the RP were formed. In addition to fuel RP, there were particles that contained activation radionuclides. The experiment on dissolution of RP using the model solution (the simulated stomach fluid) showed different cumulative extractions of radionuclides from the particles: 60Co and 137Cs extractions were the lowest, the extracted fractions of europium and americium isotopes were the largest, and plutonium occupied an intermediate position. High concentrations of radionuclides in RP are sources of exposure of organisms in aquatic and terrestrial ecosystems to low radiation doses. The plant bioassays of the effects of ?-radiation from RP showed the effect of low doses of ?-radiation on growth parameters of aquatic plant Elodea canadensis growing in the Yenisei River floodplain. The presence of RP from different sources in the Yenisei River floodplain makes this region a unique site for studying environmental effects of the particles. © 2019 Elsevier Ltd

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Держатели документа:
Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Geology and Mineralogy Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Bolsunovsky, A.; Melgunov, M.

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Comparative Estimation of the Plutonium (238Pu, 239+240Pu) and Radiocesium (137Cs) Content in Bottom Sediments and Hydrobionts of the Yenisei River / T. A. Zotina, M. S. Melgunov, D. V. Dementyev, Y. V. Alexandrova // Dokl. Earth Sci. - 2020. - Vol. 492, Is. 2. - P434-437, DOI 10.1134/S1028334X20060227 . - ISSN 1028-334X
Кл.слова (ненормированные):
Apatania crymophyla -- Fontinalis antipyretica -- plutonium -- radiocesium -- zoobenthos -- Isotopes -- Nuclear fuels -- Plutonium -- Rivers -- Bottom sediments -- Comparative estimation -- Hydrobionts -- Plutonium isotopes -- Radioactive discharges -- Radiocesium -- Specific activity -- Yenisei rivers -- River pollution
Аннотация: Abstract: The contents of isotopes of plutonium (238Pu and 239, 240Pu) and 137Cs in samples of bottom sediments and hydrobionts (water moss, amphipods, and caddisfly larvae with casings) taken in the Yenisei River in the vicinity of the radioactive discharge from the Mining and Chemical Combine in 2012 and 2018 were comparatively estimated. It is shown that the content and ratios between the specific activities of plutonium isotopes (238/239 and 240) in samples of BSs and hydrobionts increased after the recommencing of plutonium discharges into the Yenisei due to the beginning of MOX fuel production. The background content and the ratio between plutonium isotopes in BSs of the Yenisei were estimated for the first time. Hydrobionts and BSs were ranged differently according to the content of plutonium and 137Cs: we recorded the highest content of 137Cs in BSs and that of plutonium in water moss. The plutonium content in hydrobionts of the Yenisei River varies considerably, which permits specification of representatives of biota (water moss and caddisfly larvae with casings) that, along with BSs, can be used as effective indicators of ecosystem pollution with plutonium. © 2020, Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Zotina, T. A.; Melgunov, M. S.; Dementyev, D. V.; Alexandrova, Y. V.

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