Supported liquid membranes (SLM) utilized to separation of elements 4f and uranium
Carregando...
Data
Data de publicação
2005
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th
Exportar
Resumo
Liquid membranes have been an emerging technique used as an alternative for the separation and preconcentration of several metallic species. It have been applied as one alternative technique in the separation of
metallic ions originating from several areas of industry like the hydrometallurgical, gases separation,
biotechnology, treatment of nuclear and non-nuclear waste. The recovery of those metals through that technique
has good potential to reduce, in very low levels, pollutants in processes.
The liquid membrane is a solution, which is an organic solvent, water immiscible and with low dielectric
constant, that is used as a diluent for an extractor agent, also called the sequestering agent, loader or metal
transporter, which is absorbed in the microporous of a polymeric film and actuates as solid support of the liquid
membrane. The extractor agent gets the metallic ion from the feed solution liberating it on the other side of the
membrane, through stripping solution. Then, the extraction and stripping of the metallic species are carried out
in a single step in the process, and has this advantage in relation to the liquid-liquid extraction that requests a
large number of stages to obtain products with high purity. Besides, the technique of SLM needs low capital and
operational cost, low energy consumption and use of little amount of extractor agent, making possible the use of
expensive extractor agents.
The main objective of this research is to investigate the influence of several parameters in the process of
extraction of lanthanide metals and uranium originating from a simulated radioactive waste using as polymeric
support membranes, PTFE and as loader calixarenes. The calixarenes are part of a very versatile class of
macrocyclic compounds that can be functionalized, being obtained like this a great variety of multifunctional
receptors.
Como referenciar
SANTOS, J.L.; FELINTO, M.C.F.C. Supported liquid membranes (SLM) utilized to separation of elements 4f and uranium. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; ENCONTRO NACIONAL DE APLICACOES NUCLEARES, 7th, ago. 28 - set. 2, 2005, Santos, SP. Anais... Disponível em: http://repositorio.ipen.br/handle/123456789/18243. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.