title: Adsorption of reactive dye on seawater-neutralised bauxite refinery residue.
abstract: 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 250.0mg/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.
authors: Universidade Estadual Paulista, UNESP, Campus de Sorocaba, Sorocaba, SP, Brazil.
authors: Kelli Cristina
authors: KC
authors: de Souza
authors: Maria Lúcia Pereira
authors: ML
authors: Antunes
authors: Sara Jane
authors: SJ
authors: Couperthwaite
authors: Fabiano Tomazini
authors: FT
authors: da Conceição
authors: Thalita Rangueri
authors: TR
authors: de Barros
authors: Ray
authors: R
authors: Frost