Optimizing the coating process of organic actinide extractants on magnetically assisted chemical separation particles

被引：35

作者：

Buchholz, BA ^{[1
]}

Tuazon, HE ^{[1
]}

Kaminski, MD ^{[1
]}

Aase, SB ^{[1
]}

Nunez, L ^{[1
]}

Vandegrift, GF ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 1997年 / 11卷 / 03期

关键词：

CMPO; MACS; magnetic separation; TBP; transuranic extraction;

D O I：

10.1016/S1383-5866(97)00022-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The coatings of ferromagnetic-charcoal-polymer microparticles (1-25 mu m) with organic extractants specific for actinides were optimized for use in the magnetically assisted chemical separation (MACS) process. The organic extractants, octyl (phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) dissolved in tributyl phosphate (TBP), coated the particles when a carrier organic solvent was evaporated. Coated particles were heated in an oven overnight to drive off any remaining carrier solvent and fix the extractants on the particles. Partitioning coefficients for americium obtained with the coated particles routinely reached 3000-4000 ml g(-1), approximately 10 times the separation efficiency observed with the conventional solvent extraction system using CMPO and TBP. (C) 1997 Elsevier Science B.V.

引用

页码：211 / 219

页数：9

共 21 条

[1] Radiolysis and hydrolysis of magnetically assisted chemical separation particles [J].