Comparison of the Physicochemical Characteristics of Bio-char Pyrolyzed from Moso Bamboo and Rice Husk with Different Pyrolysis Temperatures

作者：Zhang, Yimeng; Ma, Zhongqing^*; Zhang, Qisheng; Wang, Jiayao; Ma, Qianqiang; Yang, Youyou; Luo, Xiping; Zhang, Weigang^*

来源：BioResources, 2017, 12(3): 4652-4669.

DOI：10.15376/biores.12.3.4652-4669

• Moso bamboo
• Rice husk
• Bio-char
• Pyrolysis
• Characteristics

Bio-char pyrolyzed from biomass waste has been notably applied in various industries due to its versatile physicochemical characteristics. This paper investigated the difference of the properties of the bio-char derived from moso bamboo and rice husk under different pyrolysis temperatures (200 degrees C to 800 degrees C). As the temperature increased, the biochar yield for both bamboo bio-char (BC) and rice husk bio-char (RHC) decreased, while the carbon element content and fixed carbon, the value of higher heating value (HHV) and pH increased for both BC and RHC. At 800 degrees C, BC had a higher HHV of 32.78 MJ/kg than RHC of 19.22 MJ/kg, while RHC had a higher yield of char (42.99 wt.%) than BC (26.3 wt.%) because of the higher ash content (47.51 wt.%) in RHC. SiO2 was the dominant component in the ash of RHC, accounting for 86.26 wt.%. The surface area (SBET) of RHC (331.23 m(2)/g) was higher than BC (259.89 m(2)/g). However, the graphitization degree of BC was higher than RHC at the same temperature. The systematic study on the evolution of the basic properties of BC and RHC will provide a good reference for their high value-added application.

• 出版日期2017
• 单位浙江农林大学; 南京林业大学