کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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613858 | 880731 | 2006 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Application of zeolite MCM-22 for basic dye removal from wastewater Application of zeolite MCM-22 for basic dye removal from wastewater](/preview/png/613858.png)
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.
MCM-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 as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 295, Issue 1, 1 March 2006, Pages 71–78