Polyacrylic gel beads reinforced by a polyamide membrane: application to copper removal in aqueous media

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Laguecir, A (Author) Other; Frere, Y (Author) Other; Danicher, L (Author) Other; José Miguel Loureiro (Author) FEUP; Ernst, B (Author) Other; Burgard, M (Author) Other

Journal

Title: Desalination

Vol. 146 No. 1

Pages: 311-317

ISSN: 0011-9164

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 4 Citations

ISI Web of Science

Scopus - 3 Citations

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Other information

Authenticus ID: P-000-N06

DOI: 10.1016/s0011-9164(02)00499-x

Abstract (EN): Polyacrylic acid gel is known for its ion chelating properties. Its poor mechanical resistance hinders its use in extraction operations. Crosslinking can improve the mechanical resistance but lowers the chelating capacity. A gel encapsulation technique has been developed to obtain a material constituted by a low cross linked polyacrylic gel coated by a polyamide membrane and having improved mechanical resistance with respect to the corresponding gel. Extracting properties of various metal ions (Cu, Ni, Co and Zn) carried out in "batch" and "column" processes are presented. Mass transfer modeling studies have been carried out by using the mass action law for the ion exchange equilibrium and by describing the ion flow with the Nernst-Planck equation. Collocation in finite elements was used to solve the model equations. Results indicate that the capsules can be compared with ion exchange resins.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7