Agricultural Utilization of Biochar: A Review of Production Technologies
2025
Ammal Abukari | James Seutra Kaba | Akwasi Adutwum Abunyewa
Biochar production has gained significant attention lately due to its potential to sequester carbon, improve soil fertility and mitigate climate change. Various production technologies have been developed to convert biomass into biochar, each with its unique characteristics and advantages. This review provides a comprehensive overview of the current biochar production technologies aiming to synthesize existing knowledge and identify research gaps with a focus on their potential to contribute to the United Nations Sustainable Development Goals (SDGs) 2, 12, 13 and 15. The scope of this review encompasses various biochar production techniques including slow pyrolysis, fast pyrolysis, gasification and torrefaction. The effects of production conditions such as temperature, residence time, and feedstock types on biochar properties and yields are discussed. The prospects of using biochar in the agricultural system were discussed. Additionally, challenges and opportunities associated to scaling up biochar production technologies are highlighted. The findings of this review have implications for the development of sustainable biochar production practices and environmental management strategies.
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