Influence of Temperature and Impregnation Ratio of H_3PO_4 on the Production of Activated Carbon from Hazelnut Shell

• Authors: Y. Örkün , N. Karatepe , R. Yavuz
• Languages of publication: EN

Abstracts

EN

Hazelnut shell was used as a precursor in the production of activated carbon by chemical activation with H_3PO_4 since there is a huge volume of such a solid waste resulting from the hazelnut production in eastern Black Sea region of Turkey. Effects of final activation temperature, time and H_3PO_4 concentration used in the impregnation stage on the porous development were investigated. Activation at low temperature represented that micropores were developed first and then mesoporosity developed, enhanced up to 400C and then started to decrease due to possible shrinking of pores. The optimum temperature for hazelnut shell was found to be around 400C on the basis of total pore volume and the Brunauer-Emmett-Teller surface area. It was clearly demonstrated that H_3PO_4 concentration used in the impregnation stage was not only effective for development of surface area and pore volumes but also an effective tool for tailoring the pore structure and size distribution.

Keywords

EN

81.05.Rm; 81.05.U-

Discipline

• 81.05.U-: Carbon/carbon-based materials(for carbon-based superconductors, see 74.70.Wz)
• 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 1
• Pages: 277-280

Dates

published

2012-01

Contributors

author

Y. Örkün

• Energy Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey

author

N. Karatepe

• Energy Institute, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey

author

R. Yavuz

• Engineering Department, Istanbul Technical University, Chemical, 34469 Maslak, Istanbul, Turkey

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Identifiers

DOI

10.12693/APhysPolA.121.277