Dual carbon sequestration with photosynthetic living materials.

Authors

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

Published in

Nature communications. Volume 16. Issue 1. Pages 3832. Apr 23, 2025. Epub Apr 23, 2025.

Abstract

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.

PMID:
40268910
Bibliographic data and abstract were imported from PubMed on 24 Apr 2025.

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