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Modification of the chemical composition in cellulosic biomasses induced by torrefaction


  • Godin, B. , Hecq, O. , Agneessens, R. & Delcarte, J. (2018). Modification of the chemical composition in cellulosic biomasses induced by torrefaction. Proceedings in: 1st BERA Workshop on Bioenergy, Brusseles, November 2018,
Type Conference Proceedings
Year of conference 2018
Title Modification of the chemical composition in cellulosic biomasses induced by torrefaction
Conference name 1st BERA Workshop on Bioenergy
Conference location Brusseles
Label U13-Godin-2018
conference Date November 2018
Abstract The outlook of torrefying cellulosic biomasses is to be able to produce a renewable fuel under the form of pellets comparable to mineral coal, both in terms of energy density and physicochemical characteristics. In addition, it aims to replace fossil coal with a renewable fuel. The objective of our study is to assess the content change of the main chemical components (Lignin, Cellulose, Hemicelluloses, Solubles Sugars, Starch, Proteins and Mineral compounds) induced by torrefaction (at 270°C until a 25% loss of dry weight) in cellulosic biomasses (Bamboo, Spruce, Tall fescue, Corn and Sorghum). In addition, we assessed the suitability of the Van Soest method that is usually used to determine the content of lignin, cellulose and hemicelluloses in forage biomasses to be used with torrefied biomasses. Our results show that torrefaction enables to have biomasses with a more standardized chemical composition and lower water content. A drawback of torrefaction is to concentrate the content of mineral compounds. The observed changes in chemical composition suggest that cellulosic biomasses use for torrefaction should have high contents of lignin, cellulose and hemicelluloses and a low content of mineral compounds. In contrary to cellulosic biomasses, it is necessary in torrefied biomasses to determine the protein content in the NDF, ADF and ADL Van Soest fractions to subtract it from each respective fraction to avoid biased Van Soest values of the lignin, cellulose and hemicelluloses contents. This is necessary for a higher degree of accuracy of the total mass balance of torrefied biomasses.
File Modification of the chemical composition in cellulosic biomasses induced by torrefaction
Authors Godin, B. , Hecq, O. , Agneessens, R. & Delcarte, J.