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Particulate emissions from a modern wood stove – Influence of KCl

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  • Du, Yifan
  • Lin, Weigang
  • Glarborg, Peter

Abstract

Particulate matter (PM) generated by residential wood combustion is a major environmental concern in Europe. This study focuses on the influence of potassium chloride (KCl) on fine particle emissions from a modern wood stove. Wood logs with and without KCl impregnation were subjected to batch combustion and emission measurements. A bi-modal particle number-size distribution characterized by a nucleation mode and an accumulation mode was identified for all types of wood fuel. However, in the presence of KCl, a lower number emission of ultrafine particles and a higher number emission of larger particles (size ∼200–500 nm) were observed. In addition, the emission factor of condensed organic compounds (COC) increased with increasing KCl content, from 0.16 g/kg dry wood for normal wood (NW) to 0.48 g/kg dry wood for wood impregnated with the 2 mol/L KCl solution (HKW), most likely due to the facilitated heterogeneous condensation of semi-volatile hydrocarbons on pre-existing ash particles. In addition, the emission factor of soot particles also increased slightly when the KCl content was high, from 1.47 g/kg dry wood for NW to 2.23 g/kg dry wood for HKW.

Suggested Citation

  • Du, Yifan & Lin, Weigang & Glarborg, Peter, 2021. "Particulate emissions from a modern wood stove – Influence of KCl," Renewable Energy, Elsevier, vol. 170(C), pages 1215-1227.
    • Handle: RePEc:eee:renene:v:170:y:2021:i:c:p:1215-1227
    DOI: 10.1016/j.renene.2021.02.048
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    Cited by:

    1. Li, Yu & Tan, Zhiwu & Zhu, Youjian & Zhang, Wennan & Du, Zhenyi & Shao, Jingai & Jiang, Long & Yang, Haiping & Chen, Hanping, 2022. "Effects of P-based additives on agricultural biomass torrefaction and particulate matter emissions from fuel combustion," Renewable Energy, Elsevier, vol. 190(C), pages 66-77.
    2. Chen, Tao & Sjöblom, Jonas & Ström, Henrik, 2022. "Numerical investigations of soot generation during wood-log combustion," Applied Energy, Elsevier, vol. 325(C).
    3. Song, Bing & Cao, Xuewen & Gao, Wenran & Aziz, Shazed & Gao, Shuai & Lam, Chun-Ho & Lin, Richen, 2022. "Preparation of nano-biochar from conventional biorefineries for high-value applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 157(C).

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