Adsorption of reactive dye on seawater-neutralised bauxite refinery residue

Autor(es)

de Souza, Kelli Cristina ^[1] ; Pereira Antunes, Maria Lucia ^[1] ; Couperthwaite, Sara Jane ^[2] ; da Conceicao, Fabiano Tomazini ^[3] ; de Barros, Thalita Rangueri ^[1] ; Frost, Ray ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, BR-18017180 Sorocaba, SP - Brazil

^[2] Queensland Univ Technol, Sch Chem Phys & Mech Engn, Fac Sci & Engn, Brisbane, Qld 4001 - Australia

^[3] Univ Estadual Paulista, UNESP, Ins Geociencias & Ciencias Exatas, BR-13506900 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Colloid and Interface Science; v. 396, p. 210-214, APR 15 2013.
• Citações Web of Science: 17

Resumo

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 degrees 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. (C) 2013 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 10/03459-6 - Estudo da lama vermelha ativada por tratamento químico e térmico como meio adsorvedor de corantes têxteis
• Beneficiário: Kelli Cristina de Souza
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/02374-0 - Caracterização da lama vermelha brasileira e avaliação de seu potencial para a adsorção de corantes têxteis
• Beneficiário: Maria Lúcia Pereira Antunes
• Modalidade de apoio: Auxílio à Pesquisa - Regular