Adsorption modelling of textile dyes by sepiolite

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Rui A. R. Boaventura (Author) FEUP; Sílvia C.R. Santos (Author) FEUP

Journal

Title: Applied Clay Science

Vol. 42 No. 1-2

Pages: 137-145

ISSN: 0169-1317

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 67 Citations

ISI Web of Science

Scopus - 69 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

Authenticus ID: P-003-TAR

DOI: 10.1016/j.clay.2008.01.002

Abstract (EN): Adsorption of Astrazon Red (Basic Red 46) and Sirius Blue (Direct Blue 85) in aqueous solution by sepiolite was studied using Response Surface Methodology. A Box-Behnken design was performed to evaluate the effect of initial dye concentration, initial solution pH and temperature on the amount of dye adsorbed at equilibrium. Quadratic models were used to fit the experimental data obtained for both dyes and their adequacy was statistically validated. Linear and quadratic effects of initial dye concentration and linear effect of initial pH were shown to be very significant for Astrazon Red adsorption. Initial pH played the most important effect on the adsorbed amount of Sirius Blue dye but the linear effect of initial dye concentration, its interaction effect with initial pH and the quadratic effect of pH were shown to be also very significant.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9