title: A novel color removal adsorbent from heterocoagulation of cationic and anionic clays.
abstract: We report the preparation and characterization of a novel nanocomposite adsorbent for anionic dye removal. The nanocomposite adsorbent was prepared by heterocoagulation of delaminated bentonite and layered double hydroxide (LDH) colloids. The effects of preparation conditions, LDH loading, particle size, and calcination temperature of the modified material on the physicochemical properties of this composite adsorbent have been investigated. The optimal conditions for best Reactive Yellow 2 (RY2) dye removal efficiency are a weight ratio of LDH to bentonite of 1:1, LDH particle size 100 nm, and calcination temperature 673 K. The adsorption equilibrium data can be fitted well by the widely accepted adsorption isotherm models.
authors.affiliation: ARC Centre for Functional Nanomaterials, School of Engineering, The University of Queensland, St. Lucia, QLD 4072, Australia.
authors.forename: Qiuhong
authors.initials: Q
authors.lastname: Hu
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Xu
authors.forename: Shizhang
authors.initials: S
authors.lastname: Qiao
authors.forename: Fouad
authors.initials: F
authors.lastname: Haghseresht
authors.forename: Michael
authors.initials: M
authors.lastname: Wilson
authors.forename: Gao Qing
authors.initials: GQ
authors.lastname: Lu