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A Comprehensive Study of Biochar Yield and Quality Concerning Pyrolysis Conditions: A Multifaceted Approach

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  • Alperay Altıkat

    (Biosystems Engineering Department, Iğdır University, Iğdır 76000, Türkiye)

  • Mehmet Hakkı Alma

    (Biosystems Engineering Department, Iğdır University, Iğdır 76000, Türkiye)

  • Aysun Altıkat

    (Environmental Engineering Department, Iğdır University, Iğdır 76000, Türkiye)

  • Mehmet Emin Bilgili

    (Eastern Mediterranean Agricultural Research Institute, Karataş Road 17 km, P.O. Box 45, Adana 01321, Türkiye)

  • Sefa Altıkat

    (Biosystems Engineering Department, Iğdır University, Iğdır 76000, Türkiye)

Abstract

In this research, we investigated the yields of biochar, bio-oil, and synthesis gas under various pyrolysis conditions, as well as their impact on the elemental composition, FTIR, EDX, SEM, and HCV values of biochar. This study utilized three different pyrolysis temperatures (400 °C, 500 °C, 600 °C), two holding times (30 and 60 min), and two N 2 gas flow rates (0.2 and 0.5 L min −1 ). We observed that an increase in pyrolysis temperature led to a decrease in the yields of biochar and bio-oil, while synthesis gas yield increased, as expected. Additionally, a higher gas flow rate resulted in a reduction of biochar yield from 34.07% to 32.72%. A longer residence time diminished the bio-oil yield but increased the synthesis gas yield. The FTIR, EDX, and elemental analysis of biochar produced at a pyrolysis temperature of 600 °C, with a 60-min holding time and a 0.2 L min −1 N 2 gas flow rate, indicated maximized carbon content. Moreover, a more porous structure was observed at higher pyrolysis temperatures. The research also revealed that increases in pyrolysis temperature, residence time, and gas flow rate enhanced the energy content of the biochar.

Suggested Citation

  • Alperay Altıkat & Mehmet Hakkı Alma & Aysun Altıkat & Mehmet Emin Bilgili & Sefa Altıkat, 2024. "A Comprehensive Study of Biochar Yield and Quality Concerning Pyrolysis Conditions: A Multifaceted Approach," Sustainability, MDPI, vol. 16(2), pages 1-22, January.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:2:p:937-:d:1324129
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    2. Aravind Ganesan & Simon Barnabé & Younès Bareha & Simon Langlois & Olivier Rezazgui & Cyrine Boussabbeh, 2025. "Turning Construction, Renovation, and Demolition (CRD) Wood Waste into Biochar: A Scalable and Sustainable Solution for Energy and Environmental Applications," Energies, MDPI, vol. 18(15), pages 1-39, July.

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