Effects of impregnated potassium on biomass torrefaction

Michal Safar, Bo Jhih Lin, Wei Hsin Chen, D. Langauer, H. Raclavska, Anélie Pétrissans, Mathieu Pétrissans

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Torrefaction is a pre-treatment process which can improve the properties of biomass, such as improving grindability, increasing heating value, and reducing the hygroscopic nature. Potassium is a well-known alkali catalyst in the thermal reactions of biomass. The influence of potassium on the devolatilization behavior was dependent on the amount of loading potassium. The aim of this study is to figure out the effect of potassium on the thermal degradation of biomass, the rubber wood sawdust was adopted as the feedstock, and the biomass sample was crushed and then dried in an atmospheric oven. Impregnation was used to prepare samples with different potassium ion content equably and adequately. Thereafter, the sample was torrefied by in a thermogravimetric analyser (TG) at different temperature (150, 20, 250, and 300 °C). The experimental results show that the addition potassium can significantly change the chemical kinetics, and further enhanced the thermal degradation of biomass during torrefaction.

Original languageEnglish
Pages (from-to)55-60
Number of pages6
JournalEnergy Procedia
Publication statusPublished - 2019
Event10th International Conference on Applied Energy, ICAE 2018 - Hong Kong, China
Duration: 2018 Aug 222018 Aug 25

All Science Journal Classification (ASJC) codes

  • Energy(all)


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