Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 162, Issue 1, Pages 133-139Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2008.05.016
Keywords
Adsorption; Anionic dye; Kinetics; Ammonium-functionalized MCM-41; Isotherm
Categories
Funding
- Ministry of Education of China [705013]
Ask authors/readers for more resources
Investigations were conducted in a batch reactor system to study the adsorption behavior of four anionic dyes (Methyl orange (MO), Orange IV (OIV), Reactive brilliant red X-3B (X-3B), and Acid fuchsine (AF)) on ammonium-functionalized MCM-41 (NH3+-MCM-41) from aqueous medium by varying the parameters such as contact time, initial dye concentration, pH and competitive anions. Dye adsorption was broadly independent of initial dye concentration. The intraparticle diffusion model was the best in describing the adsorption kinetics for the four anionic dyes on NH3+-MCM-41. The adsorption data for the four dyes were well fitted with the Langmuir model. The electrostatic interaction was considered to be the main mechanism for the dye adsorption. Finally, it was observed that the anion of soft acid inhibited the adsorption capacity significantly. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available