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Techno-economic assessment of swine manure biochar production in large-scale piggeries in China

Author

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  • Hu, Mao
  • Guo, Kai
  • Zhou, Haiqin
  • Zhu, Wenkun
  • Deng, Liangwei
  • Dai, Lichun

Abstract

Biochar production using swine manure (SM) from large-scale piggeries is increasingly needed. However, little is known about the economic feasibility for SM biochar production. Herein, SM biochar production was simulated via Aspen Plus, and techno-economic model was applied to calculate the net present value (NPV), internal rate of return (IRR), and discounted payback period (DPP) for SM biochar production with a processing capacity of 8000 tons SM per year. Results suggest that this project is susceptible to biochar selling price and operation cost. When the biochar price is > 116 USD/ton, the NPV is positive. When the biochar selling price is increased from 154 to 193 USD/ton, the IRR is increased from 11 % to 41 %. The DPP analyses show that the investment payback period for this project is 4.6 years. Moreover, compared to conventional SM treatment routes, valorization of SM into biochar in large-scale piggery in China has a shorter investment period. Finally, this study suggests that swine manure biochar production in large-scale piggeries in China is profitable, deserving investment.

Suggested Citation

  • Hu, Mao & Guo, Kai & Zhou, Haiqin & Zhu, Wenkun & Deng, Liangwei & Dai, Lichun, 2024. "Techno-economic assessment of swine manure biochar production in large-scale piggeries in China," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224028111
    DOI: 10.1016/j.energy.2024.133037
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