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 …
Selective ion-exchange with zeolites has been considered as one of the most promising means to remove a radioactive isotope of cesium, 137Cs, present in low concentration in seawater. However, there has been no report on the fundamental structure–property relation of zeolite-based Cs ion-exchangers. In this study, we investigate the origin of the selectivity of the radioactive cesium isotope ...
Request PDF on ResearchGate | Selective Removal of Cesium and Strontium using Porous Frameworks from high level Nuclear Waste | Efficient and cost-effective removal of radioactive (137)Cs and (90 ...
In case of cesium there is no much change in the DF values by UF. However, the UF has helped in the solid — liquid separation as the flocks of copper ferrocyanide precipitate are feathery in nature. The effect of ionic strength and the presence of TBP on the removal efficiency of cesium …
Industrial utilization of nuclear resources greatly depends on the effective treatment of nuclear waste. The efficient removal of radioactive nuclides from liquid effluents by using different adsorbents has thus become crucial. Herein, for the first time, two-dimensional transition metal carbides (MXenes) ar
Radiocesium is a major fission product that has negative effects on ecosystems and human health due to its radioactivity and chemical toxicity. Metal hexacyanoferrates (MHCF), as efficient adsorbent for cesium removal has aroused great interest because of their high selectivity and adsorption capacity for cesium …
In this work, a novel non-toxic and effective adsorbent, Prussian blue functionalized microcapsules (PB-MCs) was first developed for the highly efficient removal of cesium ions by flotation ...
Current adsorbents are not efficient at removing cesium from liquid wastes containing high-salt concentrations and their use to treat existing DOE liquid waste would require large capital expenditures. As a result, DOE is funding work to develop and test more cost effective adsorbents for removal of cesium from these high-salt content wastes ...
Request PDF on ResearchGate | On Jan 15, 2014, Dahu Ding and others published Efficiency of transition metal modified akadama clay on cesium removal from aqueous solutions
synthesized, evaluated for cesium (Cs) removal efficiency, and a composition called TAM-5 was developed that exhibits high selectivity and affintiy for Cs and strontium (Sr). Tests show it can remove parts per million concentrations of Cs+ from highly alkaline, high-sodium, simulated
Jul 16, 2014· The Cs + removal efficiency by the apparatus was 87.4% at 20 ppb, which is comparable to that of several pot-type water purifiers that have efficiencies of around 90% for tap water containing 40–50 µg/l (ppb) cesium chloride . A removal efficiency of 58.2% for Cs + appears to be
Request PDF on ResearchGate | Efficient removal of cesium from aqueous solution with vermiculite of enhanced adsorption property through surface modification by ethylamine | Ethylamine modified ...
May 28, 2014· Effective Removal Of Radioactive Cesium. ... Improving The Efficiency Of Hydrogen Production Using a hybrid system for the electrolysis of water, a research group in South Korea has invented a method to produce hydrogen fuel cheaply and efficiently.
The Cs + removal efficiency by the apparatus was 87.4% at 20 ppb, which is comparable to that of several pot-type water purifiers that have efficiencies of around 90% for tap water containing 40–50 µg/l (ppb) cesium chloride . A removal efficiency of 58.2% for Cs + appears to be
Magnetic Prussian blue (PB) nanocomposites were synthesized by binding PB to a core of magnetite (Fe3O4) nanoparticles for highly efficient and rapid separation of cesium (Cs+) from aqueous solution. The average particle size of the magnetic PB nanocomposites was 13.6 nm, and they had a high surface area (322.19 m2/g), leading to efficient Cs+ adsorption capability.
The removal of radioactive 137Cs from nuclear waste is of great importance for both the environment and energy saving. Herein, we report a study on the removal of Cs+ using a calix crown ether bis(2-propyloxy)calix[4]crown-6 (BPC6) in ionic liquids [Cnmim][NTf2], where [Cnmim]+ is 1-alkyl-3-methylimidazolium and [N
Mar 05, 2017· Read "Highly efficient removal of radioactive cesium by sodium-copper hexacyanoferrate-modified magnetic nanoparticles, Colloids and Surfaces A: Physicochemical and Engineering Aspects" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
At present, selective and efficient removal of cesium ions (Cs +) from nuclear waste is of significant importance but still challenging. In this study, an easy-to-get and low-cost hydrogel adsorbent has been developed for effective adsorption and removal of Cs + from aqueous environment.
An andic soil, akadama clay, was modified with nickel oxide and tested for its potential application in the removal of cesium from aqueous solution. Scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), and powder X-ray diffraction (XRD) results revealed the nickel oxide was successfully grafted into akadama clay. N2 adsorption–desorption isotherms indicated the ...
In case of cesium there is no much change in the DF values by UF. However, the UF has helped in the solid liquid separation as the flocks of copper ferrocyanide precipitate are feathery in nature. The effect of ionic strength and the presence of TBP on the removal efficiency of cesium …
Jun 20, 2017· The removal efficiency achieved 64 % in the blood with an initial Cs concentration of 168.4 ppb. This study provides a new approach to directly remove cesium ions from the human body by utilizing biocompatible Prussian blue magnetic nanoparticles. Citing Literature.
Sigma-Aldrich offers abstracts and full-text articles by [Hang Long, Pingxiao Wu, Lin Yang, Zhujian Huang, Nengwu Zhu, Zhixian Hu].
The nanoparticles successfully removed cesium ions from human blood with improved biocompatibility. The removal efficiency achieved 64 % in the blood with an initial Cs concentration of 168.4 ppb. This study provides a new approach to directly remove cesium ions from the human body by utilizing biocompatible Prussian blue magnetic nanoparticles.
Aug 17, 2018· NNSA’s Office of Radiological Security and Medstar Georgetown University Hospital worked together to remove a cesium-137 blood irradiator on Aug. 7 and replace it with an X-ray irradiator at the hospital’s Washington, D.C., facility.. NNSA and the hospital partnered late last year as part of the 2020 Cities Initiative and the Cesium Irradiator Replacement Project.
Cesium Removal at Fukushima Nuclear Plant 13215 - … issues in an efficient and safe manner. The goals of this system were to safely remove the cesium (Cs), minimize waste generation, and ensure operations within the short time frame.
The adsorption isotherm, kinetic and thermodynamic studies were also evaluated based on the experimental results. A higher Cs removal efficiency of almost (for 20–100 mg/L of initial concentration) was achieved by the modified SSM slag, and the maximum adsorption capacity was found to be 52.36 mg/g.
2.2 Efficiency of cesium removal in the Circulating Water Cooling System The first cesium removal system started its operation in June 17, 2011 [1]. This system was based on the use of engineered zeolites, and until the end of 2013 it had 3treated 203 740 m of water [2]. This system was in continuous operation until 26 April 2012.
synthesized, evaluated for cesium (Cs) removal efficiency, and a composition called TAM-5 was developed that exhibits high selectivity and affinity for Cs and strontium (Sr). Tests show it can remove parts per million concentrations of Cs' from highly alkaline, high-sodium, simulated
Jan 28, 2016· Karamanis, D. & Assimakopoulos, P. A. Efficiency of aluminum-pillared montmorillonite on the removal of cesium and copper from aqueous solutions. Water Res . 41 , 1897–1906 (2007).
Selective cesium removal from radioactive liquid waste by crown ether immobilized new class conjugate adsorbent. J. Hazard. Mater. 278, 227–235 (2014). Karamanis D. & Assimakopoulos P. A. Efficiency of aluminum-pillared montmorillonite on the removal of cesium and copper from aqueous solutions. Water Res. 41, 1897–1906 (2007).
Apr 16, 2019· It showed excellent adsorption selectivity, capacity for cesium ions, together with stability in the acid/alkali and radiation circumstance. In the test of real water sample with about 1 ppm cesium ions added, a removal efficiency of 96% was achieved by the …
