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<p>Natural ecosystems efficiently sequester CO<sub>2</sub> but containing and controlling living systems remains challenging. Here, we engineer a photosynthetic living material for dual CO<sub>2</sub> sequestration that leverages biomass production and insoluble carbonate formation via microbially induced carbonate precipitation (MICP). To achieve this, we immobilize photosynthetic microorganisms within a printable polymeric network. Digital design and fabrication of the living structures ensure sufficient light access and nutrient supply to encapsulated cyanobacteria, enabling long-term culture for over a year. We showcase that photosynthetic living materials are able to sequester 2.2 ± 0.9 mg of CO<sub>2</sub> per gram of hydrogel material over 30 days and 26 ± 7 mg of CO<sub>2</sub> over 400 days. These findings highlight the potential of photosynthetic living materials for scalable, low-maintenance carbon sequestration with applications in carbon-neutral infrastructure and CO<sub>2</sub> mitigation.</p>

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Dual carbon sequestration with photosynthetic living materials

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月23日

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  • Dalia Dranseike,
  • Yifan Cui,
  • Andrea S. Ling,
  • Felix Donat,
  • Stéphane Bernhard,
  • Margherita Bernero,
  • Akhil Areeckal,
  • Marco Lazic,
  • Xiao-Hua Qin,
  • John S. Oakey,
  • Benjamin Dillenburger,
  • André R. Studart,
  • Mark W. Tibbitt

摘要

Natural ecosystems efficiently sequester CO2 but containing and controlling living systems remains challenging. Here, we engineer a photosynthetic living material for dual CO2 sequestration that leverages biomass production and insoluble carbonate formation via microbially induced carbonate precipitation (MICP). To achieve this, we immobilize photosynthetic microorganisms within a printable polymeric network. Digital design and fabrication of the living structures ensure sufficient light access and nutrient supply to encapsulated cyanobacteria, enabling long-term culture for over a year. We showcase that photosynthetic living materials are able to sequester 2.2 ± 0.9 mg of CO2 per gram of hydrogel material over 30 days and 26 ± 7 mg of CO2 over 400 days. These findings highlight the potential of photosynthetic living materials for scalable, low-maintenance carbon sequestration with applications in carbon-neutral infrastructure and CO2 mitigation.