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Comparative Evaluation of Hydrothermal Carbonization and Low Temperature Pyrolysis of Eucommia ulmoides Oliver for the Production of Solid Biofuel by Wang, Yajun; Qiu, Ling; Zhu, Mingqiang; Sun, Guotao; Zhang, Tianle; Kang, Kang is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract This study evaluates the feasibility of two thermal pretreatments including hydrothermal carbonization (HTC) and low temperature pyrolysis (LTP) on the production of __Eucommia ulmoides__ biochar. The waste wood of __Eucommia ulmoides__ Oliver was pretreated and characterized for fuel applications. The results confirm that both LTP and HTC are promising processes for improving fuel properties. However, for the same char yield, the required temperature for HTC is lower than LTP, as the char yields of H~200~ and L~300~ were quite close (66.50% vs. 66.74%). The surface morphology is significantly different between the pyrolytic carbon and the hydrochar. In addition, it was found that the H/C and O/C ratios of H~300~ were 0.82 and 0.21, respectively, and the H/C and O/C ratios of L~340~ were 0.77 and 0.22, respectively. They were similar to that of sub-bituminous. Moreover, under the same reaction temperature, hydrochar showed better grindability, hydrophobicity, and reduction in inorganic content. Comparing the integrated combustion characteristic index (__S__), LTP process had the better performance within the lower temperature under 220 °C while HTC process performed bet

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Author

Wang, Yajun; Qiu, Ling; Zhu, Mingqiang; Sun, Guotao; Zhang, Tianle; Kang, Kang

Publisher

Springer Science and Business Media LLC; London: Nature Publishing Group; [London]: Springer Nature; Nature Publishing Group; Society for Mining, Metallurgy and Exploration Inc.; Research Square; Springer Nature; Island Press (ISSN 2045-2322)

Published

2019

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)