• Cesium and strontium tolerant Arthrobacter sp. strain ...

    Cesium and strontium binding. Cs + and Sr 2+ binding by KMSZP6 cells was examined following 24 h of exposure to 75 mM of CsCl or SrCl 2 at pH 7.5. This concentration of the metals was challenging but not inhibitory for the growth of the cells. Both cesium and strontium were found to be stable and did not precipitate under the experimental ...

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  • Radioactivity : Strontium-90

    Strontium-90 A fission product with properties close to calcium. Strontium-90 is with cesium-137 a major radioactive product of nuclear fission. After the explosion of an atomic bomb or within a nuclear reactor, it is abundant: 5.8% of uranium-235 fissions produces this radioelement.

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  • Radioactivity : Chernobyl Caesium-137

    On the contrary, because of their periods of thirty years, the effects of cesium-137, and to a lesser degree those of one other radioactive element, strontium-90, are still being felt. The thirty years caesium period offers an advantage: it is 1400 times less active than iodine-131. But it carries a drawback: it disappears very slowly.

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  • (PDF) Uptake of cesium and strontium by crystalline ...

    The differences in the uptake of Cs+ and Sr2+ result from the different coordination environments of cesium and strontium in the eight-ring channel, that result from various hydration sites in the ...

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  • Caesium - Wikipedia

    Caesium (IUPAC spelling) or cesium (American spelling) is a chemical element with symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.

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  • Rubidium | chemical element | Britannica.com

    Apr 12, 2019· The radioactive decay of rubidium-87 (87 Rb) to strontium-87 (87 Sr) was the first widely used dating system that utilized the isochron method. Rubidium is a relatively abundant trace element in Earth’s crust and can be found in many common rock-forming minerals in which it substitutes for the major element potassium.…

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  • Continuous leaking of radioactive strontium, cesium from ...

    Mar 10, 2016· Scientists investigated the levels of radioactive strontium and cesium in the coast off Japan in September 2013. Radioactive levels in seawater were 10 …

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  • Caesium - Element information, properties and uses ...

    Caesium gets its name from the Greek for heavenly blue. Not for its eyes (it's only an element!) but less romantically for the appearance of its emission spectrum in the spectroscope. Caesium was discovered in 1860 by Robert Bunsen (he of the burner fame) and physicist Gustav Kirchhoff.

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  • Adsorption of Cesium, Strontium, and Cobalt Ions on ...

    Constant pH adsorption isotherms for nonradioactive Cs+, Sr2+, and Co2+ on pure magnetite and a 80% (w/w) magnetite−silica composite were measured at 25 °C over a wide range of metal ion concentrations. The adsorption studies were carried out at four different pH's: 6, 7, 8, and 9 for Cs+ and Sr2+ and 5, 6, 7, and 8 for Co2+. All of the constant pH isotherms exhibited type I behavior with a ...

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  • Caesium-137 - Wikipedia

    Together with caesium-134, iodine-131, and strontium-90, caesium-137 was among the isotopes distributed by the reactor explosion that constitute the greatest risk to health. The mean contamination of caesium-137 in Germany following the Chernobyl disaster was 2000 to 4000 Bq/m 2.

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  • Cesium - Periodic Table of Elements and Chemistry

    Cesium is an extremely reactive metal and the most alkaline of the elements. It reacts explosively upon contact with water producing cesium hydroxide (CsOH), an extremely strong base that can rapidly corrode glass. Uses of Cesium. Cesium is used in atomic clocks, which are incredibly accurate.

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  • Cesium - The most ACTIVE metal on EARTH! - YouTube

    Oct 07, 2016· So today I will tell you about the most active and unusual metal on earth – cesium. Cesium is an alkali metal which is located near the bottom of the periodic table of chemical elements.

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  • Innovative highly selective removal of cesium and ...

    Jan 01, 2009· Highly selective removal of Cesium and Strontium is critical for waste treatment and environmental remediation. Cesium-137 is a beta-gamma emitter and Strontium-90 is a beta emitter with respective half-lives of 30 and 29 years.

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  • Diffusivities of Cesium and Strontium in Concretes and in ...

    Diffusivities of Cesium and Strontium in Concretes and in Mixtures of Sodium Bentonite and Crushed Rock - Volume 44 - Arto Muurinen, Juha Rantanen, Raisa Ovaskainen. Skip to main content Accessibility help We use cookies to distinguish you from other users …

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  • Exceptionally Selective Removal of Cesium and Strontium ...

    Selective removal of cesium and strontium is critical for waste treatment and environmental remediation. Cesium-137 (half-life 30 years) is a strong beta-gamma emitter, and Strontium-90 (half-life 29 years) is a beta emitter and a large source of Cerenkov radiation, resulting in …

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  • Cesium 137 and Strontium 90 in Sea Water | Journal of ...

    Abstract. Concentration of Cs-137 and Sr-90 in the western North Pacific was determined. The content of Cs-137 ranged from 0.8 to 4.8 μμc/l while Sr-90 of 0.6 to 3.1 μμc/l was observed. These values are much higher than those obtained in the Atlantic and the eastern part of the North Pacific.

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  • Cesium and Strontium Capsules - nwtrb.gov

    The cesium and strontium sealed within double-walled, stainless steel capsules and stored at the Hanford Site were extracted from high-level radioactive waste (HLW) stored in underground tanks at the site in order to reduce the heat load of the HLW. Cesium (in the form of cesium chloride, mostly cesium …

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  • Removal of Cesium, Strontium, Americium, Technetium and ...

    Removal of Cesium, Strontium, Americium, Technetium and Plutonium from Radioactive Wastewater EPA Grant Number: R825511C061 Subproject: this is subproject number 061 , established and managed by the Center Director under grant R825511 (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).

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  • Cesium and strontium tolerant Arthrobacter sp. strain ...

    Arthrobacter sp. KMSZP6 isolated from a pristine uranium ore deposit at Domiasiat located in North-East India exhibited noteworthy tolerance for cesium (Cs) and strontium (Sr). The strain displayed a high minimum inhibitory concentration (MIC) of 400 mM for CsCl and for SrCl2. Flow cytometric analysis employing membrane integrity indicators like propidium iodide (PI) and thiazole orange (TO ...

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  • INTERACTION PROFILE FOR: CESIUM, COBALT, STRONTIUM ...

    CESIUM, COBALT, STRONTIUM, POLYCHLORINATED BIPHENYLS, and TRICHLOROETHYLENE U.S. Department of Health and Human Services Public Health Service Agency for Toxic Substances and Disease Registry May 2004

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  • Management of the Cesium and Strontium Capsules Project …

    The Management of the Cesium and Strontium Capsules (MCSC) Project (W-135) has been identified for removal of cesium and strontium capsules from WESF and placement of the capsules into an interim storage configuration, pending final disposition. The MCSC Project scope includes the following major activities to achieve interim storage of

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  • Distribution and Fixation of Cesium and Strontium in ...

    Mar 15, 2012· The selective removal and fixation of Cs and Sr have been studied in zeolite A and chabazite. Cesium ion was preferentially distributed into chabazite with a high distribution coefficient (K Cs>103 cm3·g−1) in the presence of NaCl (10−1 mol·dm−3). The K Sr values for zeolite A attained about 103 cm3·g−1 in the pH range of 8∼10, and they gradually decreased with an decrease in pH.

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  • Radiation enhanced diffusion of cesium, strontium, and ...

    The radiation enhanced diffusion (RED) of three key fission products in SiC: cesium, europium, and strontium was investigated following ion irradiation at a damage rate of 4.6 × 10 −4 dpa s −1 at temperatures between 900° C and 1100° C. The radiation enhancement of diffusion was as large as 10 7 at 900° C, and dropped to a value of 1 by 1300° C for all but cesium grain boundary diffusion.

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  • caesium | Definition of caesium in English by Oxford ...

    ‘Once ingested, radioactive plutonium, cesium and strontium atoms morph into agents of death in the body, stealthily emitting radiation internally and constantly bombarding the genes of nearby cells.’ ‘They mapped the patterns made by known elements and discovered many new ones, including rubidium and cesium.’

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  • U.S. Department of Energy Office of Inspector General ...

    is the ongoing management of stored cesium and strontium capsules at the Hanford Site's Waste Encapsulation and Storage Facility (WESF). From 1974 to 1985, cesium and strontium were recovered from high-level waste storage tanks at the Hanford Site, packed in corrosion-resistant capsules, and placed in underwater storage at WESF.

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  • Removal efficiency of water purifier and adsorbent for ...

    Removal efficiency of water purifier and adsorbent for iodine, cesium, strontium, barium and zirconium in drinking water. Sato I, Kudo H, Tsuda S. The severe incident of Fukushima Daiichi Nuclear Power Station has caused radioactive contamination of environment including drinking water.

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  • Extraction of cesium and strontium from nuclear waste ...

    Jan 01, 1988· Cesium and strontium are extracted from aqueous acidic radioactive waste containing rare earth elements, technetium and actinides, by contacting the waste with a composition of a complex organoboron compound and polyethylene glycol in an organofluorine diluent mixture.

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  • Hanford waste encapsulation: strontium and cesium ...

    The strontium and cesium fractions separated from high-radiation-level wastes at Hanford are converted to the solid strontium fluoride and cesium chloride salts, doubly encapsulated, and stored underwater in the Waste Encapsulation and Storage Facility.

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  • Recent developments in nanostructured inorganic materials ...

    In water soluble form, cesium and, in particular, strontium may exist in a variety of ionic species, often depending on the composition of the aqueous stream , , , .An example of Cs and Sr speciation as a function of pH is presented in Fig. 1.Although cesium may form complexes with some organic molecules and weak complexes with sulfate, halides, and nitrate, it does not hydrolyze and the ...

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  • Place the following elements in order of decreasing atomic ...

    Nov 03, 2007· tellurium, bromine, argon, cesium, strontium, and selenium. Ar, Br, Cs, Se, Sr, Te ... For further info: watch this video and look at the periodic table and the relationships between location and atomic size. The guy above me answered most of why anyway. Arsenic is more to the right and higher than bromine so arsenic would not be bigger than ...

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