Pyrolysis of furfural residue in a bubbling fluidized bed reactor: Biochar characterization and analysis

Yang Liu, Yongmeng Song, Chunmei Ran, Asif Ali Siyal, Polina Chtaeva, Jianjun Dai, Zhihui Jiang, Zeyu Deng, Tianhao Zhang, Wenya Ao and Jie Fu

Energy, 2020, vol. 211, issue C

Abstract: The pyrolysis characteristic of furfural residue (FR) was investigated in a fluidized bed reactor. The yield of biochar (BC) decreased whereas non-condensable gas yield increased with increasing temperature from 450 °C to 850 °C. The minimum BC yield (41.67 wt%) was found with addition of kaolin at 650 °C, while the maximum non-condensable gas yield (48.00 wt%) was obtained at 850 °C without additives. Furthermore, the maximum condensate yield (20.63 wt%) was observed at 650 °C with Ca-bentonite addition. Both Ca-bentonite and kaolin decreased the BC yield, while CaO promoted the BC yield. The contents of carbon, nitrogen and sulfur in BC were enriched at different temperatures. Ca-bentonite, kaolin and CaO resulted in more amount of protrusions on the BC surface and improved BC pore structures. Iodine and methylene blue adsorption values of BC were higher than that of FR and the maximum iodine adsorption value (279.6 mg/g) was obtained at 650 °C without additives. CaO remarkably increased methylene blue adsorption value, reaching the maximum value of 168.7 mg/g at 450 °C. A possible formation pathway of BC during FR pyrolysis was also proposed.

Keywords: Furfural residue; Fluidized bed; Pyrolysis; Biochar (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:211:y:2020:i:c:s0360544220320739

DOI: 10.1016/j.energy.2020.118966

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