Isotherm and Kinetic Modeling of Adsorption of Acridine Orange Using Eucalyptus-Wood Based Activated Carbon Modified with Maghemite Nanoparticles
کد مقاله : 1060-PHYSCHEM20
طاهره مومنی اصفهانی *
هیئت علمی
چکیده مقاله:
Abstract: In this study, activated carbon (AC) was prepared from low cost and locally available source such as eucalyptus wood, the activated carbon modified with γ-Fe2O3. The activated carbon was produced by the acid treatment of the carbon obtained from eucalyptus wood. The prepared nanomaterial was characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) to examine their size and magnetic moment. The γ-Fe2O3 nanoparticle loaded activated carbon (γ-Fe2O3-NPs-AC) was used as novel adsorbent for the removal of acridine orange. The Freundlich and Langmuir isotherms were studied. The Langmuir was found to be most applicable isotherm which predicted maximum monolayer adsorption capacities of 154.74 mg g-1 for the adsorption of dye. The pseudo-second order model was found to be applicable for the adsorption kinetics
کلیدواژه ها:
Keywords: " Maghemite nanoparticles, "Acridine Orange", "activated carbon".
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