Published 2005 | Version v1
Journal article Metadata-only

Oscillation extraction system with liquid membrane for rare earths separation

Creators

  • 1. Sankt-Peterburgskij Gosudarstvennyj Tekhnologicheskij Inst., Sankt-Peterburg (Russian Federation)

Description

Nonstationary oscillation system consisting of two extractors combined by liquid membrane is investigated. Influence of transfer rate of organic phase of liquid membrane and acid concentration is studied. Dependences of enrichment degree of aqueous and organic phases on time are obtained. Enrichment degree depends on low-frequency oscillation of redox potential. Optimal concentration of HNO3 for Nd and Pr separation is determined. Enrichment degree of aqueous phase rises in the case of liquid membrane transfer rate increase. 142Ce and 140Ce ratio in aqueous phases of two extractors is measured

Abstract (Russian)

Исследована нестационарная колебательная система, состоящая из двух экстракторов, соединенных сплошной жидкой мембраной. Изучено влияние скорости перекачивания органической фазы жидкой мембраны и концентрации кислоты. Получены зависимости степеней обогащения водной и органической фаз от времени. Степень обогащения зависит от низкочастотных колебаний окислительно-восстановительного потенциала. Определена оптимальная концентрация HNO3 для разделения Nd и Pr. Измерены соотношения 142Ce и 140Ce в водных фазах двух экстракторов

Additional details

Additional titles

Original title (Russian)
Колебательная экстракционная система с жидкой мембраной для разделения RZEh

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
47
Journal Issue
4
Journal Page Range
p. 355-358
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37011395
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; DISTRIBUTION FUNCTIONS; MEMBRANES; NITRIC ACID; RARE EARTH COMPOUNDS; SOLVENT EXTRACTION; TIME DEPENDENCE
Descriptors DEC
DIMENSIONLESS NUMBERS; EXTRACTION; FUNCTIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; KINETICS; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; REACTION KINETICS; SEPARATION PROCESSES

Optional Information

Notes
8 refs.; 2 tabs.; 4 figs.