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DOI 10.2172/5557445
Title Accelerated Leach Test(s) Program. Annual report
Creator/Author Dougherty, D.R. ; Fuhrmann, M. ; Colombo, P.
Publication Date1985 Sep 01
OSTI IdentifierOSTI ID: 5557445; Legacy ID: DE86012035
Report Number(s)BNL-51955
DOE Contract NumberAC02-76CH00016
Other Number(s)Other: ON: DE86012035
Resource TypeTechnical Report
Resource RelationOther Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Research OrgBrookhaven National Lab., Upton, NY (USA)
Subject11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; LEACHING; RESEARCH PROGRAMS; LOW-LEVEL RADIOACTIVE WASTES; WASTE FORMS; BITUMENS; CESIUM 137; EXPERIMENTAL DATA; INFORMATION SYSTEMS; PORTLAND CEMENT; STRONTIUM 85; STYRENE; VINYL MONOMERS; ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; ALKYLATED AROMATICS; AROMATICS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BUILDING MATERIALS; CEMENTS; CESIUM ISOTOPES; DATA; DAYS LIVING RADIOISOTOPES; DISSOLUTION; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; HOURS LIVING RADIOISOTOPES; HYDROCARBONS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATERIALS; MONOMERS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOISOTOPES; SEPARATION PROCESSES; STRONTIUM ISOTOPES; TAR; WASTES; YEARS LIVING RADIOISOTOPES
Description/Abstract This report summarizes the work performed for the Accelerated Leach Test(s) Program at Brookhaven National Laboratory in Fiscal Year 1985 under the sponsorship of the US Department of Energy's Low-Level Waste Management Program (LLWMP). Programmatic activities were concentrated in three areas, as listed and described in the following paragraphs. (1) A literature survey of reported leaching mechanisms, available mathematical models and factors that affect leaching of LLW forms has been compiled. Mechanisms which have been identified include diffusion, dissolution, ion exchange, corrosion and surface effects. Available mathematical models are based on diffusion as the predominant mechanism. Although numerous factors that affect leaching have been identified, they have been conveniently categorized as factors related to the entire leaching system, to the leachant or to the waste form. A report has been published on the results of this literature survey. (2) A computerized data base of LLW leaching data and mathematical models is being developed. The data are being used for model evaluation by curve fitting and statistical analysis according to standard procedures of statistical quality control. (3) Long-term tests on portland cement, bitumen and vinyl ester-styrene (VES) polymer waste forms are underway which are designed to identify and evaluate factors that accelerate leaching without changing the mechanisms. Results on the effect of temperature on leachability indicate that the leach rates of cement and VES waste forms increase with increasing temperature, whereas, the leach rate of bitumen is little affected.
Country of PublicationUnited States
LanguageEnglish
FormatSize: Pages: 86
AvailabilityNTIS, PC A05/MF A01; 1.
System Entry Date2008 Sep 04

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