Mesoporous and adsorptive properties of palm date seed activated carbon prepared via sequential hydrothermal carbonization and sodium hydroxide activation
Mesoporous activated carbon (AC) was prepared via sodium hydroxide (NaOH) activation of hydrochar from the hydrothermal carbonization (HTC) of palm date seed (PDS). The textural, morphological, and chemical properties of the produced hydrochar AC were investigated. NaOH activation enhanced the por...
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| Main Authors: | , , , , |
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| 格式: | Article |
| 語言: | English |
| 出版: |
Elsevier B.V.
2015
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| 主題: | |
| 在線閱讀: | http://ir.unimas.my/id/eprint/9270/1/Mesoporous.pdf http://ir.unimas.my/id/eprint/9270/ http://www.sciencedirect.com/science/article/pii/S138589471500087X |
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| 總結: | Mesoporous activated carbon (AC) was prepared via sodium hydroxide (NaOH) activation of hydrochar
from the hydrothermal carbonization (HTC) of palm date seed (PDS). The textural, morphological, and
chemical properties of the produced hydrochar AC were investigated. NaOH activation enhanced the porosity
and surface functionality of the hydrochar. Batch equilibration methods were performed to explore
the process parameters that affected the adsorption of the prepared AC on methylene blue (MB), including
initial concentration, contact time, solution pH and temperature. The Freundlich isotherm model better
depicted the equilibrium data compared with the Langmuir isotherm model. Temperature was found
to negatively affect the adsorption capacity of the prepared AC, which exhibited 612.1, 464.3 and
410.0 mg/g maximum MB adsorption capacities at 30, 40 and 50 �C, respectively. The pseudo-second
order kinetic model best described the kinetic data. HTC and NaOH activation was proven to be an effective
method in preparing highly porous AC from PDS, with good potential for cationic dye removal from
liquid phase. |
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