Life-cycle assessment of pyrolysis processes for sustainable production of biochar from agro-residues

Xiefei Zhu, Claudia Labianca, Mingjing He, Zejun Luo, Chunfei Wu, Siming You, Daniel C.W. Tsang

Research output: Journal article publicationReview articleAcademic researchpeer-review

13 Citations (Scopus)


Net carbon management of agro-residues has been an important pathway for reducing the environmental burdens of agricultural production. Converting agro-residues into biochar through pyrolysis is a prominent management strategy for achieving carbon neutrality in a circular economy, meeting both environmental and social concerns. Based on the latest studies, this study critically analyzes the life cycle assessment (LCA) of biochar production from different agro-residues and compares typical technologies for biochar production. Although a direct comparison of results is not always feasible due to different functional units and system boundaries, the net carbon sequestration potential of biochar technology is remarkably promising. By pyrolyzing agro-residues, biochar can be effectively produced and customized as: (i) alternative energy source, (ii) soil amendment, and (iii) activated carbon substitution. The combination of life cycle assessment and circular economy modelling is encouraged to achieve greener and sustainable biochar production.

Original languageEnglish
Article number127601
JournalBioresource Technology
Publication statusPublished - Sept 2022


  • Activated carbon
  • Carbon neutrality
  • Circular economy
  • Engineered biochar
  • Renewable energy
  • Sustainable waste management

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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