Synthetic fuel production from cottonseed: Fast pyrolysis and a TGA/FT-IR/MS study

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[1] Apaydin-Varol, Esin
[2] Uzun, Başak Burcu
[3] Önal, Eylem
[4] Pütün, Ayşe E.
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Apaydin-Varol, E. (eapaydin@anadolu.edu.tr) | 1600年 / Elsevier B.V., Netherlands卷 / 105期
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This study investigates the thermal decomposition behavior of cottonseed via TGA/FT-IR/MS and the quantification/characterization of liquid products from fast pyrolysis. Thermal degradation of the biomass sample has occurred in four steps; corresponding to the removal of moisture; decomposition of cellulose; hemicellulose and lignin and it was completed at about 700 C. The main gaseous products evolved were CO2; light hydrocarbons and H2O. For the fast pyrolysis experiments; particular investigated process variables were temperature (400-700 C); heating rate (5-700 C min-1) and nitrogen gas flow rate (100-800 cm3 min-1). Maximum oil yield was attained at 500 C with a yield of 49.5% under 200 cm3 min -1 nitrogen flow rate and at a heating rate of 300 C min -1. Bio-oil obtained at optimum conditions are separated into its fractions by column chromatography. The oil and its sub-fractions were characterized by elemental analysis; FT-IR; and GC/MS. The char was characterized with elemental analysis and FT-IR techniques. The aliphatic sub-fraction of the obtained bio-oil contains predominantly straight chain of n-alkanes and alkenes. According to the chemical characterization; the bio-oil can be utilized as conventional liquid fuels. © 2013 Elsevier B.V. All rights reserved;
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