Sorption of metals by an amidoxime chelating resin. Part I: Equilibrium

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Ferreira, LM (Autor) Outra; José Miguel Loureiro (Autor) FEUP; Alírio Rodrigues (Autor) FEUP

Revista

Título: Separation Science and Technology

Vol. 33 Nº 11

Páginas: 1585-1604

ISSN: 0149-6395

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 13 Citações

ISI Web of Science

Scopus - 15 Citações

COMPENDEX

Outras Informações

ID Authenticus: P-001-9RC

Abstract (EN): The complexation equilibrium of metals (copper, lead, and zinc) by using a chelating ion-exchange resin (Duolite ES-346) is analyzed. Two potentiometric titrations of the resin which allow evaluation of the exchange capacity and the pK values are carried out. Two equilibrium models (mass action type model and surface complex formation model) are proposed, and their parameters are estimated by fitting model equations to data from batch experiments. The degradation of the amidoxime groups in acidic media and a possible way to minimize that problem is discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 20