scholarly journals Volatilization of Fission Products from Metallic Melts in the Melt-Dilute Treatment Technology Development for Al-Based DOE Spent Nuclear Fuels

1999 ◽  
Vol 608 ◽  
Author(s):  
Thad M. Adams ◽  
Andrew J. Duncan ◽  
Harold B. Peacock
Keyword(s):  
Technology Development ◽  
Fission Products ◽  
Nuclear Fuels ◽  
Treatment Technology ◽  
Metallic Melts

The Influence of Maturation Stage on the Solubility of Fission Products from Aerosols Emitted by Overheated Nuclear Fuels

1996 ◽  
Vol 72 (2) ◽  
pp. 101-104
Author(s):  
J. Vanbegin ◽  
P. Froment ◽  
J. Cara ◽  
C. Ronneau
Keyword(s):  
Fission Products ◽  
Maturation Stage ◽  
Nuclear Fuels

scholarly journals Supernatant treatment technology development: Report for the second quarter FY 1994

1996 ◽  
Author(s):  
C.D. Carlson ◽  
L.A. Bray ◽  
S.R. Adami ◽  
S.A. Bryan
Keyword(s):  
Technology Development ◽  
Treatment Technology

Computational Study for Inventory Estimation of Se-79, Tc-99, Sn-126, and Cs-135 in High-Level Radioactive Wastes From Spent Nuclear Fuels of Light Water Reactors

2011 ◽  
Author(s):  
Keisuke Okumura ◽  
Shiho Asai ◽  
Yukiko Hanzawa ◽  
Tsutomu Okamoto ◽  
Hideya Suzuki ◽  
...  
Keyword(s):  
Parametric Study ◽  
Computational Study ◽  
Estimation Method ◽  
Fission Products ◽  
Radioactive Wastes ◽  
Light Water Reactors ◽  
Nuclear Fuels ◽  
Light Water ◽  
Water Reactors ◽  
High Level

Inventory estimation of long-lived fission products (LLFPs) in high-level radioactive wastes (HLW) from spent nuclear fuels of light water reactors is important for a safety assessment of their disposal. In order to develop an inventory estimation method of difficult-to-measure LLFPs (Se-79, Tc-99, Sn-126, and Cs-135), a parametric study was carried out by using a sophisticated burnup calculation code and data. In the parametric study, fuel specifications and irradiation conditions are changed in the conceivable range. The considered parameters are fuel assembly types (PWR / BWR), U-235 enrichment, moderator temperature, void fraction, power density, and so on. From the calculated results, we clarify the burnup characteristics of the target LLFPs and their possible ranges of generations. Finally, candidates of the key nuclide are proposed for the scaling factor method of HLW.

The Influence of Maturation Stage on the Solubility of Fission Products from Aerosols Emitted by Overheated Nuclear Fuels

ENERGYO ◽  
2018 ◽  
Author(s):  
J. Vanbegin ◽  
P. Froment ◽  
J. Cara ◽  
C. Ronneau
Keyword(s):  
Fission Products ◽  
Maturation Stage ◽  
Nuclear Fuels

SIMULATING THE BEHAVIOUR OF FISSION PRODUCTS IN UO2

1991 ◽  
Vol 257 ◽  
Author(s):  
Robin W. Grimes
Keyword(s):  
Charge State ◽  
Significant Variation ◽  
Fission Products ◽  
Simulation Technique ◽  
Nuclear Fuels ◽  
Variable Charge

ABSTRACTFission products in nuclear fuels exhibit a significant variation in solubility and stability. To understand better the reasons for this variation, the Mott-Littleton simulation technique has been used to calculate solution energies of the fission products Br, Kr, Rb, Sr, Y, Zr, Te, I, Xe, Cs, Ba, La and Ce. Nonstoichiometry and variable charge state are important components of the model.

scholarly journals FY-2001 Accomplishments in Off-gas Treatment Technology Development

2001 ◽  
Author(s):  
Douglas William Marshall
Keyword(s):  
Technology Development ◽  
Treatment Technology ◽  
Gas Treatment

scholarly journals An innovative dual-column system for heavy metallic ion sorption by natural zeolite

2021 ◽  
Author(s):  
Amanda L. Ciosek ◽  
Grace K. Luk
Keyword(s):  
Natural Zeolite ◽  
Mine Drainage ◽  
Technology Development ◽  
Fixed Bed ◽  
Contact Period ◽  
Metallic Ions ◽  
Treatment Technology ◽  
Sorption System ◽  
Column System ◽  
In Series

This study investigates the design and performance of a novel sorption system containing natural zeolite. The apparatus consists of packed, fixed-bed, dual-columns with custom automated controls and sampling chambers, connected in series and stock fed by a metering pump at a controlled adjustable distribution. The purpose of the system is to remove heavy metallic ions predominately found in acid mine drainage, including lead (Pb2+), copper (Cu2+), iron (Fe3+), nickel (Ni2+) and zinc (Zn2+), combined in equal equivalence to form an acidified total 10 meq/L aqueous solution. Reported trends on the zeolite’s preference to these heavy metallic ions is established in the system breakthrough curve, as Pb2+ >> Fe3+ > Cu2+ > Zn2+ >> Ni2+. Within a 3-h contact period, Pb2+ is completely removed from both columns. Insufficient Ni2+ removal is achieved by either column with the promptest breakthrough attained, as zeolite demonstrates the least affinity towards it; however, a 48.97% removal is observed in the cumulative collection at the completion of the analysis period. The empty bed contact times for the first and second columns are 20 and 30 min, respectively; indicating a higher bed capacity at breakthrough and a lower usage rate of the zeolite mineral in the second column. This sorption system experimentally demonstrates the potential for industrial wastewater treatment technology development. Keywords: zeolite; sorption; packed fixed-bed columns; heavy metallic ions; automated sampling design

Determination of fission products and actinides in spent nuclear fuels by isotope dilution ion chromatography inductively coupled plasma mass spectrometry

1995 ◽  
Vol 10 (5) ◽  
pp. 381 ◽  
Author(s):  
J. Ignacio Garcia Alonso ◽  
Fabrizio Sena ◽  
Philippe Arbore ◽  
Maria Betti ◽  
Lothar Koch
Keyword(s):  
Mass Spectrometry ◽  
Ion Chromatography ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
Fission Products ◽  
Nuclear Fuels ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry
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