• Enhanced immobilization of Prussian blue through hydrogel ...

     · Adsorption is one of the simplest processes for removing radioactive cesium diffused in the water, ... (Cs137) and isotope cesium (Cs133) are evaluated. Results and Discussion.

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  • CORRECTING and REPLACING Kurion Ion ...

     · View of Kurion Ion Specific Media System for removing cesium. ... waste loading and retention of volatile isotopes ( cesium) ... cooling system to process in only one year roughly 150 ...

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  • A new way to remove contaminants from nuclear wastewater

     · A new way to remove contaminants from nuclear wastewater. A smallscale device, seen here, was used in the lab to demonstrate the effectiveness of the new shockwavebased system for removing ...

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  • Dictionary of Radiation Terms

    Cesium137 (Cs137): has a halflife of years and decays by beta and gamma radiation. Cs137 is produced by nuclear fission for use in medical devices and gauges and is one of the byproducts of nuclear fission processes in nuclear reactors and nuclear weapons testing.

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  • Chapter 4 TREATMENT OF INTERNAL RADIONUCLIDE .

    ISOTOPES OF CONCERN Element Isotopes of Concern Source Radiation Type Critical Organ(s) Americium 241Am Smoke detectors, fallout α, g Bone, liver, lung Cesium 137Cs Radiotherapy units β, g Total body (especially kidney) Cobalt 60Co Radiotherapy units, β, g Total body (especially liver) commercial irradiators

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  • Radioactive Isotopes Measured at Olympic and Paralympic ...

    ORIGINAL ARTICLES Radioactive Isotopes Measured at Olympic and Paralympic Venues in Fukushima Prefecture and Tokyo, Japan Marco Paul Johann Kaltofen,1,* Arnie Gundersen,2 and Maggie Gundersen2 1Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts, USA. 2Fairewinds Energy Eduion, Charleston, South Carolina, USA. Received: April 14, 2020 Accepted .

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  • TEPCO finally prepares for removing Fukushima nuclear fuel ...

     · The protective dome over the defunct Fukushima Daiichi nuclear power plant's Reactor 1 is being dismantled to prepare for the removal of nuclear fuel rods, one of the most difficult and dangerous tasks in the entire decommissioning process. The canopy was installed by TEPCO, the plant's operator, in 2011 to mitigate the damage done to [.]

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  • Preventing a Dirty Bomb

    There are several radiological isotopes of concern, but a bomb that intentionally spreads cesium137 would have the most devastating consequences. Some of the other potentially dangerous isotopes are hard metals that likely would be dispersed as fragments and could be picked up from the ground or extracted from buildings after a detonation.

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  • California's Radiological Threat Reduction Initiative

    California's Radiological Threat Reduction Initiative Alex Bednarek, Ioanna Iliopulos July 2018 This paper was submitted to the 59th Institute of Nuclear Materials Management (INMM) Annual Meeting. Abstract The Nuclear Threat Initiative (NTI) has been working with various entities throughout the State

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  • A new way to remove contaminants from nuclear wastewater ...

     · After the water stream is cleansed of its cobalt and cesium contaminants, it can be reused in the reactor. The shock electrodialysis process was initially developed by Bazant and his coworkers as a general method of removing salt from water, as demonstrated in their first .

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  • Radionuclide Basics: Cesium137 | US EPA

     · Radionuclide Basics: Cesium137. Cesium (chemical symbol Cs) is a soft, flexible, silverywhite metal that becomes liquid near room temperature, but easily bonds with chlorides to create a crystalline powder. The most common radioactive form of cesium is Cs137. Cesium137 is produced by nuclear. fission The splitting of an atomic nucleus into ...

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  • CLEANING UP NUCLEAR WASTES

    processes involved—either in the ground or in removing radioactive cesium from the tanks—there is a now a systematic way to proceed. Box THE WIDE IMPACT OF BES RESEARCH The key scientific idea underlying the nuclear waste cleanup process is what is known as molecular recognition: how to design a "host" molecule to recognize and bind to

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  • Cesium Removal at Fukushima Nuclear Plant 13215

    Removing the Cesium was critical to ensure the safety of plant personnel, minimize further offsite radiation exposure and to expand . ... Cesium isotopes are of particular concern due to gamma radiation exposure and volatility at the ... had more than enough capacity for the removal of cesium in a once through process.

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  • PRODUCTION OF HIGHPURITY CESIUM137

    A method has been provided for the production of highpurity cesium137 free of cesium134. Concentrated 137 Cs free of 134 Cs is obtained by removing nonsoluble gases, including xenon isotopes, from an operating reactor and passing these gases through a stainless steel mesh at a point in time of the gas removal path to optimize the decay of 137 Xe to 137 Cs.

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  • Practical Approach to Decontamination of Radioactive ...

    radioactive cesium using acids was studied in Japan as well8). However, because the chemical processing will change the nature of the soil, its reuse after decontamination would be difficult. The use of this method in outdoor sites is problematic, and it may generate secondary wastes in the process of treating the soils with acid.

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  • radioactivity

     · Radioactivity does not apply so much to an element as it does to a specific isotope of that element. Many elements have both radioactive and nonradioactive isotopes. In general, if a reverse osmosis membrane removes a particular element or compound it will remove all isotopes of that element to a similar degree.

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  • An Optimal Ion Exchange Design for Removal of Cesium from ...

    Keywords: Environmental science, industrial processes, ion exchange modeling Abstract Nonelutable crystalline silicotitanate (CST) ionexchanger materials have been studied for removing cesium from a variety of radioactive wastes at several DOE sites over the last decade. For the current pretreatment

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  • ORNL processes troublesome cesium | ORNL

     · Guanidine causes the cesium ions to pop out of the cage molecules, and boric acid strips them out of the solvent. STEP 3: Dispose and reuse. 1. Send the boric acid and cesium off for vitrifiion. The cesium is now in the boric acid and ready to be turned into a glass through a process called vitrifiion. 2. Send the treated solvent back for ...

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  • ANALYSIS OF DISSOLVED HEAVY METAL AND CESIUM ION .

    For cesium removal, coagulation–sedimentation processes were analyzed to be effective in removing particle bound cesium but not soluble ions in water [7]. The method of contaminant removal in this research is adsorption onto hydrogels with multifunctionalized groups that chelate heavy metals and capture cesium. Hydrogels are soft

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