| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 613858 | Journal of Colloid and Interface Science | 2006 | 8 Pages |
MCM-22 was employed as an effective adsorbent for removal of basic dyes including methylene blue, crystal violet, and rhodamine B from aqueous solution. The adsorption kinetics and isotherms were investigated. The adsorption capacity of MCM-22 for three dyes follows an order of MB > CV ∼ RB. Kinetic studies indicate that the adsorption follows the pseudo second-order kinetics and the adsorption is a two-step diffusion process with film diffusion dominating the process. The adsorption isotherm can be well fitted by both the Langmuir and the Freundlich models. Thermodynamic calculations suggest that the adsorption of basic dyes on MCM-22 is an endothermic reaction.
Graphical abstractMCM-22, a novel nanoporous material, has been tested as a new adsorbent for dye removal from aqueous solution. It has been shown that MCM-22 exhibits a comparable adsorption capacity to activated carbon.Figure optionsDownload full-size imageDownload as PowerPoint slide
