Incorporation of an evaporator concentrate in polyethylene for a BWR

Autor: Noboru Moriyama, Shigeru Dojiri, Hideo Matsuzuru
Rok vydání: 1982
Předmět:
Zdroj: Nuclear and Chemical Waste Management. 3:23-28
ISSN: 0191-815X
DOI: 10.1016/0191-815x(82)90024-9
Popis: The adaptability of polyethylene solidification method to an evaporator concentrate produced in BWR has been examined. The polyethylene product incorporating sodium sulfate as a main constituent of the concentrate was prepared using a batch-type melter. The product was tested with respect to homogeneity, density, mechanical property, water resistance and leachability, in order to evaluate the safety of the product. The product can incorporate the waste (sodium sulfate) up to 70 wt.%, but it may be recommended through tests of water resistance and leachability that the maximum waste content in the product is 50 wt.%. The product with 50 wt.% waste has the density of 1.28 g/cm3, the compressive strength of 213 kgf/cm2, enough toughness, low leachability (diffusion coefficient of sodium is 10−7−10−6 cm2/day) and excellent water resistance. This solidification method offers about 5 times larger volume reduction effect than a cement solidification does.
Databáze: OpenAIRE