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Production of Compacted Biofuels in Terms of Their Quality—Current State of Research

Author

Listed:
  • Jakub Styks

    (Department of Mechanical Engineering and Agrophysics, Faculty of Production and Power Engineering, University of Agriculture in Krakow, 31-120 Kraków, Poland)

  • Marek Wróbel

    (Department of Mechanical Engineering and Agrophysics, Faculty of Production and Power Engineering, University of Agriculture in Krakow, 31-120 Kraków, Poland)

  • Sławomir Francik

    (Department of Mechanical Engineering and Agrophysics, Faculty of Production and Power Engineering, University of Agriculture in Krakow, 31-120 Kraków, Poland)

Abstract

This paper aims to fill a gap in relation to herbaceous biomass, which is the second most important source of biomass used for the production of solid biofuels in the form of pellets. Our research focuses on the final stage of compacted fuel production, specifically on the pressure densification of biomass into pellets. This review was conducted using bibliometric techniques. This analysis included searching indexed publications in the Web of Science—Core Collection and Scopus databases. The time range of the searched data was 1991–2024. First, bibliometric data were collected and quantitative analyses were performed. The next stage consisted of analyzing keywords from the authors’ publications using the VOSviewer program. The generated term maps allowed for the analysis of the frequency of keywords in different years and the most frequently cited ones, which enabled the identification of current research topics and the evolution of trends. Based on the collected data, applications, process parameters and raw materials used in the biomass densification process were determined. Following the bibliometric analysis, detailed analyses were carried out on the factors influencing the pressure compaction process.

Suggested Citation

  • Jakub Styks & Marek Wróbel & Sławomir Francik, 2025. "Production of Compacted Biofuels in Terms of Their Quality—Current State of Research," Energies, MDPI, vol. 18(13), pages 1-27, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:13:p:3468-:d:1692341
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