Fast pyrolysis of fig leaves: influence of pyrolysis parameters and characterization of bio-oil

Yıl 2022, , 80 - 87, 29.12.2022

Turgay Kar , Sedat Keleş , Zafer Emir , Kamil Kaygusuz

https://doi.org/10.51435/turkjac.1143144

Cited By: 1

Öz

Liquid yields achieved by fast pyrolysis of ligno-cellulosic biomass can be used in the production of chemical raw materials or as an energy source. Pyrolysis product yields generally depend on the type of biomass, temperature, retention time, heating rate, sweeping gas flow rate and particle size. In this study, fast pyrolysis of fig leaves selected as biomass was carried out in a fixed bed pyrolysis reactor. Fig leaves used in fast pyrolysis experiments in this study as an agricultural by-product can be obtained in large quantities from Turkey. In the experiments, the effect of temperature, entraining gas flow rate, and particle size on pyrolysis product yields were investigated. The experiments were carried out at 400, 500, 600, 700 °C, four different particle sizes. The highest liquid product yield was obtained at 600 C, while the heating rate was 200 cm3/min and the particle size was <0.150 mm. According to the test results, the most effective parameter on liquid product yield is temperature. Based on the results of this analysis the H/C molar ratio (1.71) and the high calorific value (14.25 MJ/kg) indicate that FL can be used the source of raw materials in obtaining liquid fuel. Instrumental techniques such as FT-IR, SEM-EDS, TG/DTG and GC-MS were used for the characterization of bio-oil. The bio-oil contains alkenes, aldehydes, carboxylic acids and aromatic structures such as indole derivative as well as alkanes. The heating value of the bio-oil is 32.16 MJ/kg which is close to those of petroleum fractions.

Anahtar Kelimeler

Renewable energy, Biomass, Fast pyrolysis, Fig leaves

Teşekkür

Authors would like to thank the Turkish Academy of Sciences for financial funding. Authors would thank the KTU due to the experimental set-up and instrumentation facilities.

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