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JAEA Reports

Alkali hydrolysis experiment of organic materials such as cement additives

Fukumoto, Masahiro; Nishikawa, Yoshiaki*

JNC TN8400 2001-017, 355 Pages, 2001/03

JNC-TN8400-2001-017.pdf:6.27MB

The alkali hydrolysis experiments which seem to be important from the view point of the alteration mechanism using the following seven organic materials was performed as a part of the evaluation of the influence on the disposal of the organic materials contained in the TRU wastes. As a result of the alkali hydrolysis experiments (90$$^{circ}$$C and 91d), each organic materials became those of lower molecular weight. The degradation products were able to be detected in the solution. The organic materials seem to be degraded to the organic matters which were confirmed in this study in a long term of disposal. The degradation products were shown below. Therefore, the evaluation of the influence on the migration of radionuclides by degradation products becomes important in the future. (1)Cement additives of Naphthalenesulfonic acid and Ligninsulfonic acid ($$rightarrow$$ Naphthalenedisulfonic acid etc.) (2)Cement additives of polycarboxylic acid ($$rightarrow$$ Oligomer of distal methoxypoly ethylene glycol.) (3)Ethylenediamine-N,N,N',N'-tetraacetic acid disodium salt ($$rightarrow$$ Acetic acid desorped and cyclized organic matters from EDTA.) (4)Tributyl phosphate ($$rightarrow$$ Dibutyl phthalate, n-butanol) (5)Poly vinyl acetate ($$rightarrow$$ Acetic acid) (6)Nylon66 ($$rightarrow$$ Adipic acid, Hexamethylenediamine) (7)Cured epoxy resin ($$rightarrow$$ Glycerol poly glycidyl ether, Carboxylic acid)

JAEA Reports

None

Jo, Akinori*

PNC TJ6614 97-001, 30 Pages, 1997/03

PNC-TJ6614-97-001.pdf:0.69MB

None

JAEA Reports

None

*;

PNC TN6510 94-001, 19 Pages, 1994/09

PNC-TN6510-94-001.pdf:0.65MB

no abstracts in English

JAEA Reports

Preparation of (Th,U)O$$_{2}$$ Keruels by a Sol-gel Process

;

JAERI-M 85-127, 36 Pages, 1985/09

JAERI-M-85-127.pdf:1.28MB

no abstracts in English

Journal Articles

Journal Articles

Precipitation of thorium or uranium(VI)complex ion with cobalt(III)or chromium(III)complex cation, 5; Precipitation of uranium(VI)malato and edta complex ion

;

Journal of Nuclear Science and Technology, 17(5), p.370 - 376, 1980/00

 Times Cited Count:1 Percentile:23.03(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Liquid-liquid extraction of the EDTA complexes of lanthanides with a quaternary ammonium salt

;

Analytica Chimica Acta, 96, p.211 - 214, 1978/00

 Times Cited Count:0

no abstracts in English

Patent

ランタノイド及び/又はアクチノイドの分離法

佐々木 祐二

中瀬 正彦*; 竹下 健二*

JP, 2020-034169  Patent licensing information

【課題】本開示によれば、強酸性条件下においてランタノイド及び/又はアクチノイドの分離を効率的に行うことができる方法、並びにその方法に適した化合物を提供することができる。 【解決手段】少なくとも1種の第1ランタノイド及び/又はアクチノイド、少なくとも1種の第1ランタノイド及び/又はアクチノイドとは異なる、少なくとも1種の第2のランタノイド及び/又はアクチノイド、並びに水相錯化剤を含む酸性水溶液を提供すること、有機相錯化剤を含む有機溶媒を提供すること、並びに、酸性水溶液と有機溶媒とを接触させて、少なくとも1種の第1のランタノイド及び/又はアクチノイドと、少なくとも1種の第2のランタノイド及び/又はアクチノイドとを分離すること、を含み、有機相錯化剤は、有機溶媒中において、少なくとも1種の第1のランタノイド及び/又はアクチノイドと少なくとも錯体を形成することができ、水相錯化剤は、酸性水溶液中において、…

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