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

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Ferreira, LM (Author) Other; José Miguel Loureiro (Author) FEUP; Alírio Rodrigues (Author) FEUP

Journal

Title: Separation Science and Technology

Vol. 33 No. 11

Pages: 1585-1604

ISSN: 0149-6395

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 15 Citations

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Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 20