Characterization of activated carbon prepared by phosphoric acid activation of olive stones
The effects of activating agent concentration on the pore structure and surface chemistry of activated carbons derived from olive stone with chemical activation method using phosphoric acid as the activating agent were studied. Mass changes associated with the impregnation, carbonization and washing...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-11-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535211003030 |
| _version_ | 1818241128848162816 |
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| author | S.M. Yakout G. Sharaf El-Deen |
| author_facet | S.M. Yakout G. Sharaf El-Deen |
| author_sort | S.M. Yakout |
| collection | DOAJ |
| description | The effects of activating agent concentration on the pore structure and surface chemistry of activated carbons derived from olive stone with chemical activation method using phosphoric acid as the activating agent were studied. Mass changes associated with the impregnation, carbonization and washing processes were measured. With H3PO4 dilute solutions (60, 70, and 80 wt% H3PO4), the loading of substance on CS increases with concentration. The concentration of the H3PO4 solution seems to control the processes of impregnation, carbonization and washing in the preparation of AC from olive stones by H3PO4 chemical activation. ACs have been characterized from the results obtained by N2 adsorption at 77 K. Moreover, the fractal dimension (D) has been calculated in order to determine the AC surface roughness degree. Optimal textural properties of ACs have been obtained by chemical activation with H3PO4 80 wt.%. The BET surface areas and total pore volumes of the carbons produced at H3PO4 80 wt.% are 1218 m2/g and 0.6 cm3/g, respectively. |
| first_indexed | 2024-12-12T13:24:25Z |
| format | Article |
| id | doaj.art-4ed7e8a343e5425c9f807d4b4aa1fda1 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-12-12T13:24:25Z |
| publishDate | 2016-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-4ed7e8a343e5425c9f807d4b4aa1fda12022-12-22T00:23:12ZengElsevierArabian Journal of Chemistry1878-53522016-11-019S2S1155S116210.1016/j.arabjc.2011.12.002Characterization of activated carbon prepared by phosphoric acid activation of olive stonesS.M. YakoutG. Sharaf El-DeenThe effects of activating agent concentration on the pore structure and surface chemistry of activated carbons derived from olive stone with chemical activation method using phosphoric acid as the activating agent were studied. Mass changes associated with the impregnation, carbonization and washing processes were measured. With H3PO4 dilute solutions (60, 70, and 80 wt% H3PO4), the loading of substance on CS increases with concentration. The concentration of the H3PO4 solution seems to control the processes of impregnation, carbonization and washing in the preparation of AC from olive stones by H3PO4 chemical activation. ACs have been characterized from the results obtained by N2 adsorption at 77 K. Moreover, the fractal dimension (D) has been calculated in order to determine the AC surface roughness degree. Optimal textural properties of ACs have been obtained by chemical activation with H3PO4 80 wt.%. The BET surface areas and total pore volumes of the carbons produced at H3PO4 80 wt.% are 1218 m2/g and 0.6 cm3/g, respectively.http://www.sciencedirect.com/science/article/pii/S1878535211003030Activated carbonYieldOlive stonesPhosphoric acidPorous texture |
| spellingShingle | S.M. Yakout G. Sharaf El-Deen Characterization of activated carbon prepared by phosphoric acid activation of olive stones Arabian Journal of Chemistry Activated carbon Yield Olive stones Phosphoric acid Porous texture |
| title | Characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| title_full | Characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| title_fullStr | Characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| title_full_unstemmed | Characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| title_short | Characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| title_sort | characterization of activated carbon prepared by phosphoric acid activation of olive stones |
| topic | Activated carbon Yield Olive stones Phosphoric acid Porous texture |
| url | http://www.sciencedirect.com/science/article/pii/S1878535211003030 |
| work_keys_str_mv | AT smyakout characterizationofactivatedcarbonpreparedbyphosphoricacidactivationofolivestones AT gsharafeldeen characterizationofactivatedcarbonpreparedbyphosphoricacidactivationofolivestones |