Journal
THERMOCHIMICA ACTA
Volume 711, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.tca.2022.179209
Keywords
Woody biomass; Biochar; Pyrolysis; Thermogravimetric-mass spectrometry
Funding
- Russian Foundation for Basic Research (RFBR) [19-58-80016]
- Department of Science and Technology of India (DST) [CRG/2018/004610, DST/TDT/TDP-011/2017]
- Ministry of Science and Technology of the People's Republic of China (MOST) [2018YFE0183600]
- National Research Council of Brazil (CNPq) [402849/2019-1]
- National Research Foundation of South Africa (NRF) [BRIC190321424123]
- State Assignment Project of the Fundamental Research Program of Russian Federation 2021-2030 using the resources of the High-Temperature Circuit Multi-Access Research Center (Ministry of Science and Higher Education of the Russian Federation) [FWEU-2021-0005, 13.CKP.21.0038]
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The study aims to examine the physicochemical properties of biochar obtained at different temperatures during the pyrolysis of woody biomass. By using thermogravimetric analysis and mass spectrometry, the study compares the characteristics of biochar obtained at different temperatures (200, 250, 275, 300, 325, 350, 375, 400, and 500 ???C), as well as levoglucosan, cellulose, and lignin. The results show that the properties of biochar undergo significant changes at temperatures of 350 ???C and above, and the surface morphology of biochar has been studied using scanning electron microscopy.
The study aims to examine the physicochemical properties of biochar obtained at different temperatures of woody biomass pyrolysis. The method proposed and tested in the paper allows terminating pyrolysis in a given stage and investigating the characteristics of biochar, which is a solid intermediate. The study employs thermogravimetric analysis combined with mass spectrometry to examine and compare characteristics of biochar, obtained at different temperatures (200, 250, 275, 300, 325, 350, 375, 400, and 500 ???C), along with levoglucosan, cellulose, and lignin. Semi-quantitative analysis of gaseous products made it possible to determine the composition of the compounds released during the thermochemical conversion of the samples under study. Biochar properties change dramatically during pyrolysis at temperatures of 350 ???C and above. Changes in the surface morphology of biochar were studied using scanning electron microscopy.
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