(2017) Energy_Effects of carbon dioxide on pyrolysis of peat

Lee J., Yang X., Song H., Ok Y.S., Kwon E.E.

(Elsevier Ltd) Energy ISSN: 3605442 Vol.120 Issue. Article No. DOI: 10.1016/j.energy.2016.11.143

This study focuses on the mechanistic understanding of effects of CO₂ on pyrolysis of peat. To do this, three pyrolytic products (i.e., syngas: H₂ and CO, pyrolytic oil (tar), and biochar) were characterized. Thermal cracking of volatile organic carbons (VOCs) generated from pyrolysis of peat was enhanced in the presence of CO₂. Besides the enhanced thermal cracking of VOCs, unknown reaction between CO₂ and VOCs was also identified. Accordingly, CO₂ played a role in enhancing syngas production and in reducing tar formation in pyrolysis of peat. This study also reveals that peat-biochar produced in CO₂ exhibited a larger surface area than that produced in N₂. The results shown in this paper would be used for various applications such as energy recovery from peat using a potent greenhouse gas (for example, CO₂). © 2016 Elsevier Ltd

This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP) (No. 2014RA1A004893). This work was also supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP) (No. NRF-2015H1D3A1066513).