Analysis of chemical properties of thermally treated Pinus roxburghii Sargent wood

Abstract

Effects of thermal modification were determined relative to chemical parameters of Pinus roxburghii. Thermal modification of wood was carried out at 80, 120, 160, and 200 °C for 2, 4, and 6 h. The chemical properties were different for different temperatures and different heating time. All parameters were similar except for cold water soluble extractives. Among the chemical properties studied, the maximum mean value of cold water extractives (8.20%), hot water soluble extractives (12.7%), holocellulose content (71.8%), and ash content (1.46%) were recorded at 120 °C, whereas the maximum mean values of alcohol benzene soluble extractives (13.9%) and lignin content (33.7%) were observed at 200 °C. The minimum mean value of cold water soluble extractives (5.82%), hot water soluble extractives (9.27%), holocellulose content (65.8%), and ash content (1.03%) were found to be at 200 °C, while the highest value of alcohol benzene soluble extractives 12.2% (control) and lignin content (28.0%) were found to be at 80 °C.

Sustainable Solid Biofuel Production: Transforming Sewage Sludge and Pinus sp. Sawdust into Resources for the Circular Economy

“…wood serves as one of the sources of sawdust. This wood typically contains ash content, volatile matter, and fixed carbon ranging from 0.83% to 0.92%, 65.8% to 82%, and 17.17% to 33.3%, respectively, with a higher heating value between 14.64 and 20.1 MJ/g [9,10]. The ash does not combust, making it undesirable for energy generation, volatile materials lead to rapid combustion, playing a crucial role in the ignition process [11], and, finally, fixed carbon ensures a slower and more prolonged burn and is directly related to the heating value [12].…”

Assessment of color and contact angle changes in waterborne stained wood under natural weathering condition of South Korea’s summer climate

“…Weathering is influenced by environmental factors, including solar radiation, water, oxygen, temperature, and air pollution (Cogulet et al 2018). Wood comprises cellulose, hemicellulose, and lignin (Gupta et al 2023;Lionetto et al 2012). Lignin is a phenolic compound that absorbs 80-95% of the UV components of sunlight, while holocellulose (5 to 20%) and extractives (2%) absorb the rest (Xie et al 2005).…”