Hydrothermal carbonization kinetics of sugarcane bagasse treated by hot compressed water under variabel temperature conditions

Dewi Agustina Iryani, Satoshi Kumagai, Moriyasu Nonaka, Keiko Sasaki, Tsuyoshi Hirajima

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


This study investigated kinetics of hydrothermal carbonization (HTC) decomposition reaction of sugarcane bagasse treated with hot compressed water under varied temperature in range 200-300 °C. Experiments were carried out using a batch type reactor with a temperature controller. Characterization results showed that the decomposition reaction was influenced by temperature and reaction time. Degradation of hemicellulose began at 200°C (3 min) and was completed at 240°C (5 min) to form arabinose and xylose. Cellulose started to decompose at 240°C (5 min) and was completely degraded at 270°C (20 min). Lignin decomposed at temperature range 200-300°C, and produced aromatic and phenolic compounds. The kinetics calculation for decomposition reactions such as hydrolysis and dehydration reactions are adopted as the heterogeneous reaction model. The model assumes that solid particle is cylindrical shape and this size is shrinking with reaction (cylindrical shrinking core model). Results of calculation indicated that the reaction is controlled with the diffusion through product layer. From these calculation and the results of decomposition mechanism can be explained as follows: (i) hydrothermal carbonization cellulose and hemicellulose are decomposed preferentially and un-reacted lignin part to be diffusion layer. (ii) the hydrolysis and dehydration reaction started at 200°C and 240°C respectively and reaction rate increased with increasing temperature.

Original languageEnglish
Pages (from-to)4833-4839
Number of pages7
JournalARPN Journal of Engineering and Applied Sciences
Issue number7
Publication statusPublished - Apr 1 2016

All Science Journal Classification (ASJC) codes

  • General Engineering


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