IRVINE, Calif.-- ( BUSINESS WIRE )--Kurion, Inc., an innovator in nuclear waste management, announced that approximately 3 metric tons (3 cubic meters) of …

Furthermore, cesium can easily combine with terrestrial and aquatic organisms for its high solubility and mobility [8], [9], [10]. Radioactive cesium can be ingested and accumulated in the body through the food chain or water and subsequently deposited in the tissues throughout the body, and is difficult to be eliminated [8], [9], [10], …

Natural clinoptilolite, of relatively low-grade, was investigated for its capability to remove cesium and strontium ions from water and simulated seawater. To improve its capacity, the material was pre-activated with concentrated NaCl and HCl solutions. Additionally, it was milled to a number of <300 μm size fractions, to expose exchange sites

This review focused on cesium removal using various separation technologies, including chemical precipitation, solvent extraction, membrane …

IRVINE, Calif.--(BUSINESS WIRE)-- Kurion, Inc., an innovator in nuclear waste management, announced that approximately 3 metric tons (3 cubic meters) of ...

a potential material for 137Cs removal from wastewater. Experiment Materials All reagents used in the experiments were of analytical grade without further puri cation. Sodium carboxymethyl cellulose (CMC) was purchased from Tokyo Chemical Industry Co., Ltd. Cesium chloride was obtained from Tianjin Jinke Fine Chem-ical Research Institute.

1. Introduction. Cesium-137 (T 1/2 = 30.17 years) and cesium-135 (T 1/2 = 2.3 × 10 6 years) are fission products exhibiting high yield and long-term environmental importance. 135 Cs is one of the seven most long-living fission products (99 Tc, 126 Sn, 79 Se, 93 Zr, 135 Cs, 107 Pd and 129 I). Cesium-137 belongs, along with strontium-90 (T …

As a typical effective cesium ion removal method, this research presents a facile method of preparing potassium copper hexacyanoferrate on the surface of sludge created from refinery wastewater treatment (KCuHCFS). The IR, SEM–EDX, BET, and TGA were used to characterize the functionalized sludge KCuHCFS. On the adsorption …

The removal kinetics of cesium was adequately described by the pseudo-second-order kinetic model, which indicates that the uptake mechanism was chemisorption. The rate constant values for adsorption by nFe/Cu–Z were greater than the values obtained for nZVI–Z, meaning that nFe/Cu–Z had faster adsorption kinetics towards cesium …

A high Hg removal from a chloride solution was achieved at a wide range of initial pH (3–11) and Cl − concentrations (0.2–3 M). The best result (99.9% of Hg removal) was obtained at pH of 3, Cl − concentration of 1.7 M, and bimetal dosage of 10 g/L. The removal of Hg(II) from nitrate solution decreased, while the presence of other metal ...

"The Tank Closure Cesium Removal project will supplement existing and planned facilities in the removal of radioactive cesium from liq uid waste stored at the site, keeping with the DOE priority of protecting people and the environment," Budney said. The modular enclosure is deployed at Tanks 10 and 11 in H Tank Farm.

The optimization process of cesium removal contains the main effect and interaction effect plots. The main effect of the factor measures the average differences of cesium removal from a high level to a low level. The main effect of Fig. 5 explains a positive correlation between the cesium removal …

To use copper ferrocyanide (CuFC) more efficiently in wastewater treatment, the method of isotope carrying used in 137Cs removal was investigated. A calculation model based on Freundlich isotherm was established to determine the optimum initial cesium concentration, at which the highest decontamination factor (DF) could be …

A composite potassium copper ferrocyanide particle adsorbent (CMC–KCuFC) was fabricated in this study, based on the use of a carboxymethyl cellulose sodium (CMC) biopolymer cross-linked with Cu 2+ via a syringe pump device, serving as an efficient biosorbent for cesium (Cs) ion removal and adsorption from wastewater, and …

Abstract and Figures. The potential of banana peel (BP) on the cesium removal from aqueous solutions is study by using different design parameters by adsorption process. The design parameters ...

Removal of cesium from aqueous solutions is typically performed by using Prussian Blue (PB, Iron(III) hexacyanoferrate(II)) as an adsorbent (Lestaevel et al., 2010, Minami et al., 2016). There are some disadvantages of the use of PB, such as its very fine particle size distribution, making it difficult to use in filters.

Cesium, because of its strong affinity for oxygen, is used in oxygen removal [15]. The ability of cesium to convert solar energy into electrical energy makes feasible the use of cesium in photoelectric devices. Precise time measurement is possible with cesium-based atomic clocks [16].

Therefore, the coprecipitate flotation of cesium was investigated within this optimal pH range using 1.5x10-4 M [ZnCl 2] and 1x10 M [K4Fe(CN)6]. The induction time was 10 minutes and the gas flow rate was 25 cm3/min. Curves for the rates of cesium removal obtained at a gas flow rate of 23 cm3/min. and initial pH 4±

a syringe pump device, serving as an efficient biosorbent for cesium (Cs) ion removal and adsorption from wastewater, and was verified by SEM, EDX, FT-IR, TGA and XRD. Influencing factors in the adsorption of cesium were systematically investigated, including the pH of the solution, contact time, initial concentration, temperature and ...

Abstract. We propose a new approach to remediate cesium-contaminated clays based on intercalation of the cationic surfactant dodecyltrimethylammonium bromide (DTAB) into clay interlayers. Intercalation of DTAB was found to occur very rapidly and involved exchanging interlayer cations. The reaction yielded efficient cesium desorption …

This study was conducted to evaluate the feasibility of using electrosorption to remove cesium (Cs+) ions from aqueous solutions using the membrane capacitive deionization (MCDI) process. The electrochemical properties were analyzed using cyclic voltammetry (CV) and impedance spectroscopy (EIS). The activated carbon electrode …

In this study, graphene oxide was synthesized, characterized and applied for cesium removal from aqueous solution. The effect of various parameters, including adsorbent dosage (0.05–0.2 g L −1), pH (3–9) and ionic strength (NaNO 3 0.001–0.1 mo L −1) on adsorption capacity, as well as its adsorption kinetics, isotherms, thermodynamics …

@article{osti_20804697, title = {Removal of Radioactive Cesium from Nuclear Waste Solutions with the Transition Metal Hexacyanoferrate Ion Exchanger CsTreat}, author = {Harjula, R and Lehto, J and Paajanen, A and Brodkin, L and Tusa, E}, abstractNote = {A transition metal hexacyanoferrate product CsTreat has been utilized at …

A composite adsorbent for the removal of radioactive cesium (137 Cs) was synthesized by immobilizing potassium cobalt ferrocyanide in the micro pores of the zeolite chabazite.The synthetically optimized composite adsorbent demonstrates a rapid cesium adsorption rate under both salt-free and high-salt conditions with a high distribution …

Removal of cesium from waters is an emerging issue after the accident at Fukushima Daiichi Nuclear Power Plant. In this work, new nanoscale zero valent iron–zeolite (nZVI–Z) and nano-Fe/Cu ...

achieved was 90 wt% at 900°C for 6 hours. This is well below the amount of cesium removal required to meet Class A requirements. Cesium volatilization experiments by Del Debbio (1994) [6] show that the volatilization of cesium from pilot plant alumina calcine was 99% while that of pilot plant Fluorinel/Sodium calcine was 99.7%.

A novel nickel (II) hexacyanoferrate (III) functionalized agricultural residue-walnut shell (Ni II HCF III-WS) was developed to selectively remove cesium ion (Cs +) from aqueous solutions.This paper showed the first integral study on Cs + removal behavior and waste reduction analysis by using biomass adsorption material. The results indicated that …

The study also suggested that maximum cesium removal occurred at pH, initial concentration, and contact time of 6, 200 mg/L, and 30 min, respectively. Moreover, the statistically significant ...

Cesium radioactive isotopes (134Cs and 137Cs) are dangerous to human health due to their long half-life and high solubility in water. Nuclear experiments, wars, and nuclear plant accidents have been the main sources of Cs release into the environment. In recent years, several methods have been introduced for the elimination of Cs radioactive isotopes from …

References. Y. Namiki, T. Namiki, Y. Ishii, S. Koido, Y. Nagase, A. Tsubota, N. Tada, Y. Kitamoto, Inorganic-organic magnetic nanocomposites for use in preventive ...