Kinetic and analytical studies on pyrolysis of olive oil industry wastes

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International Journal of Chemistry and Technology
Volume:4 Issue:2
Kinetic and analytical studies on pyrolysis of olive oil industry wastes

Kinetic and analytical studies on pyrolysis of olive oil industry wastes

Pages : 162-170

View : 40 | Download : 10

Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :The pyrolysis of olive pomace was carried out at two different heating rates at 500°C in the absence and presence of catalysts insert ignore into journalissuearticles values(commercial fluid catalytic cracking insert ignore into journalissuearticles values(FCC);, aluminosilicate zeolite insert ignore into journalissuearticles values(ZSM-5); and red mud); using pyrolysis-gas chromatography/mass spectrometry insert ignore into journalissuearticles values(Py-GC/MS);. The products obtained from biomass components in different temperature ranges by sequential pyrolysis of olive pomace were investigated. In addition, the apparent activation energy of olive pomace was calculated by thermogravimetric analysis method and determined as 105.6 kJ mole-1 by Kissinger-Akahira-Sunose insert ignore into journalissuearticles values(KAS); method and 110.2 kJ mole-1 by Flynn-Wall-Ozawa insert ignore into journalissuearticles values(FWO); method. According to Py-GC/MS results, the main components in bio-oil consists of phenolic compounds. In sequential pyrolysis, while the highest organic acid was obtained at low temperatures, phenolic compounds were formed at high temperatures. While bio-oil obtained by fast pyrolysis has higher organic acid content than that of bio-oil obtained by slow pyrolysis, slow pyrolysis bio-oil contains more furan and aliphatic ketone, aldehyde and ester. Catalytic studies revealed that catalysts were more effective in the slow pyrolysis process, which allows prolonged catalyst-pyrolysis vapor contact.
Keywords : Pyrolysis, TGA, Py GC MS, olive pomace waste, catalyst

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