Journal article

Fully reversible current driven by a dual marine photosynthetic microbial community

Libertus Darus, Yang Lu, Pablo Ledezma, Juerg Keller, Stefano Freguia



The electrochemical activity of two seawater microbial consortia were investigated in three-electrode bioelectrochemical cells. Two seawater inocula - from the Sunshine Coast (SC) and Gold Coast (GC) shores of Australia - were enriched at +0.6 V vs. SHE using 12/12 h day/night cycles. After re-inoculation, the SC consortium developed a fully-reversible cathodic/anodic current, with a max. of -62 mA m(-2) during the day and +110 mA m(-2) at night, while the GC exhibited negligible daytime output but +98 mA m(-2) at night. Community analysis revealed that both enrichments were dominated by cyanobacteria, indicating their potential as biocatalysts for indirect light conversion to electricity. M..

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University of Melbourne Researchers


Awarded by Australian Research Council

Awarded by ARC

Funding Acknowledgements

This work was funded by the Australian Research Council (ARC DE130101168). Libertus Darus was supported by the Directorate General of Higher Education (DGHE) of Indonesia and ARC DP120104415. Yang Lu is supported by CRC for Water Sensitive Cities, an Australian Government Initiative. Pablo Ledezma is supported by ARC DP120104415. Stefano Freguia is supported by the fellowship ARC DE130101168. The authors would furthermore like to thank Ampon Chumpia and Markus Fluggen for technical support. The authors declare no conflict of interest.