The influence of the activation conditions on the textural characteristics of the activated carbons obtained from local peanut shells | ||
| Assiut University Journal of Multidisciplinary Scientific Research | ||
| Volume 44, Issue 2, December 2015, Pages 50-64 PDF (931.66 K) | ||
| DOI: 10.21608/aunj.2015.222240 | ||
| Abstract | ||
| Surface area and pore structure of activated carbons (ACs) prepared from peanut shells were estimated for seven samples of ACs variable in their activation method. Characterization of the porous structure of these ACs was evaluated by scanning electron microscopy and analysis of the respective N2/77 K adsorption-desorption isotherms. Surface areas accessible to MB (SMB) =110-813 m2/g were calculated using the Langmuir and Freundlich adsorption isotherm equations. The Langmuir adsorption isotherm model gives better fit as compared to Freundlich model. Ratios of methylene blue surface area to nitrogen surface area (SMB/SN2 ) were evaluated and discussed. | ||
| Keywords | ||
| activated carbons; peanut shells; surface area; methylene blue | ||
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