Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6640542 | Fuel | 2013 | 5 Pages |
Abstract
Magnetic nanoparticles are exceptional adsorbent materials due to their unique magnetic properties and good adsorption capacity. In this study, a new method combining nanoparticle adsorption and magnetic separation was investigated for the removal of cadmium ions from the drilling fluid and its efficiency was studied. Magnetic iron oxide nanoparticles were successfully synthesized, characterized and evaluated by X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and Infrared spectroscopy (IR). The effects of various factors, e.g. pH, shaking rate, retention time and magnetic adsorbent doses on the adsorption process were also studied. The concentrations of cadmium ions were measured with both Atomic Absorption Spectroscopy (AAS) and Electrochemical Method. Adsorption reached equilibrium within 10Â min. The maximum adsorption occurred at pH of 6 and shaking rate of 50Â rad/s (480Â RPM) with 3.2Â mg of adsorbent for an initial Cd concentration of 5Â mg/L. The adsorption data were analyzed and fitted well by Freundlich isotherm.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Naimeh Alimohammadi, Seyed Reza Shadizadeh, Iraj Kazeminezhad,