Adsorption of reactive dye on seawater-neutralised bauxite refinery residue

de Souza, Kelli Cristina, Antunes, Maria Lúcia Pereira, Couperthwaite, Sara Jane, da Conceição, Fabiano Tomazini, de Barros, Thalita Rangueri, & Frost, Ray L. (2013) Adsorption of reactive dye on seawater-neutralised bauxite refinery residue. Journal of Colloid and Interface Science, 396, pp. 210-214.

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This investigation has demonstrated the need for thermal treatment of seawater neutralised red mud (SWRM) in order to obtain reasonable adsorption of Reactive Blue dye 19 (RB 19). Thermal treatment results in a greater surface area, which results in an increased adsorption capacity due to more available adsorption sites. Adsorption of RB 19 has been found to be best achieved in acidic conditions using SWNRM400 (heated to 400 �C) with an adsorption capacity of 416.7 mg/g compared to 250.0 mg/g for untreated SWNRM. Kinetic studies indicate a pseudosecond-order reaction mechanism is responsible for the adsorption of RB 19 using SWNRM, which indicates adsorption occurs by electrostatic interactions.

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ID Code: 61333
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Seawater neutralised red mud, Reactive Blue dye, Thermal treatment, Adsorption
DOI: 10.1016/j.jcis.2013.01.011
ISSN: 1095-7103 (online) 0021-9797 (print)
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Elsevier Inc. All rights reserved.
Deposited On: 17 Jul 2013 01:30
Last Modified: 16 Jul 2014 18:09

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