Net zero emission in circular bioeconomy from microalgae biochar production: A renewed possibility: Bioresource Technology

G. Wu, P.E. Tham, K.W. Chew, H.S.H. Munawaroh, I.S. Tan, W.A.A.Q.I. Wan-Mohtar, M. Sriariyanun, P.L. Show

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1 Scopus citations


The rapid expansion of industrialization and continuous population growth have caused a steady increase in energy consumption. Despite using renewable energy, such as bioethanol, to replace fossil fuels had been strongly promoted, however the outcomes were underwhelming, resulting in excessive greenhouse gases (GHG) emissions. Microalgal biochar, as a carbon-rich material produced from the pyrolysis of biomass, provides a promising solution for achieving net zero emission. By utilizing microalgal biochar, these GHG emissions can be captured and stored efficiently. It also enhances soil fertility, improves water retention, and conduct bioremediation in agriculture and environmental remediation field. Moreover, incorporating microalgal biochar into a zero-waste biorefinery could boost the employ of biomass feedstocks effectively to produce valuable bioproducts while minimizing waste. This contributes to sustainability and aligns with the concepts of a circular bioeconomy. In addition, some challenges like commercialization and standardization will be addressed in the future. © 2023 Elsevier Ltd
Original languageBritish English
JournalBioresour. Technol.
StatePublished - 2023


  • Algal biomass
  • Environmental remediation
  • Greenhouse gases (GHG) emissions
  • Microalgae-derived biochar
  • Zero-waste biorefinery
  • Air pollution
  • Bioconversion
  • Bioethanol
  • Biomass
  • Bioremediation
  • Energy utilization
  • Fossil fuels
  • Greenhouse gases
  • Microorganisms
  • Population statistics
  • Refining
  • Sustainable development
  • bioethanol
  • carbon
  • charcoal
  • fossil fuel
  • Biochar
  • Biorefineries
  • Greenhouse gas emissions
  • Micro-algae
  • Microalga-derived biochar
  • Zero emission
  • Zero waste
  • alternative energy
  • biochar
  • biomass
  • emission control
  • energy use
  • environmental technology
  • greenhouse gas
  • microalga
  • waste technology
  • agriculture
  • Article
  • bioremediation
  • carbon footprint
  • ecosystem restoration
  • energy consumption
  • greenhouse gas emission
  • industrialization
  • nonhuman
  • population growth
  • pyrolysis
  • renewable energy
  • soil fertility
  • standardization
  • water retention
  • Microalgae


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