Kinetics of Pyrolysis of Date Kernels
S.T. Aly1, I. A. Ibrahim2, M.F. Abadir3
1S.T. Aly*, Chemical Engineering Department, Egyptian Academy for Engineering and Advanced Technology (EA&EAT), affiliated to Ministry of Military Production, Cairo, Egypt.
2I. A. Ibrahim, Material Science Department,Central Metallurgical Research Institute, Helwan, Egypt..
3M. F. Abadir, Chemical Engineering Departnent, Cairo university, Giza, Egypt.
Manuscript received on February 01, 2020. | Revised Manuscript received on February 05, 2020. | Manuscript published on February 30, 2020. | PP: 930-935 | Volume-9 Issue-3, February, 2020. | Retrieval Number: C5419029320/2020©BEIESP | DOI: 10.35940/ijeat.C5419.029320
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The kinetics of pyrolysis of ground date kernels was investigated using thermogravimetric analysis in order to provide the necessary information for proper biochar formation and bioreactor design. Pyrolysis was carried out at heating rates of 5, 10, 15 and 20oC.min-1 in a flow of nitrogen. One main DTG peak was obtained that corresponded to formation of bio-char. A second diffuse peak corresponds to constant rate cracking of the char formed and complete elimination of carbon leaving an ash residue. The composition of biochar was determined using EDX. Four different methods were used to follow up the kinetics of the three steps, namely, the Kissinger, the Flynn-Wall-Ozawa, the Coats-Redfern methods and multi-regression analysis. The activation energy of the main decomposition step was determined and the values obtained using different kinetic models compared. The decomposition step simply followed first order kinetics.
Keywords: Date , kernels, kinetics, Pyrolysis.