Sustained power output from an algal biophotovoltaic (BPV) platform using selected marine and freshwater microalgae

Thong, Cheng-Han and Ng, Fong-Lee and Periasamy, Vengadesh and Basirun, Wan Jeffrey and Kumar, G. Gnana and Phang, Siew-Moi (2023) Sustained power output from an algal biophotovoltaic (BPV) platform using selected marine and freshwater microalgae. Journal of Applied Phycology, 35 (1). pp. 131-143. ISSN 0921-8971, DOI

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The global community has begun tackling the grave repercussions of excessive use of fossil fuels by strategizing co-usage of renewable and non-renewable energy sources as major energy providers. Recently, biomass feedstocks including microalgae are gaining recognition as crucial energy providers to cope with the demands of the fast expanding economic and social sectors. Algae, known as one of the most photosynthetically efficient organisms, are amenable to growth on a variety of substrates, and are tolerant towards extreme conditions. The integration of microalgae into photovoltaic platforms is an innovative energy provisioning technique for low-power appliances and circuits. Our algal biophotovoltaic (BPV) platforms have undergone multiple refinements, advancing from an ITO-based anode with biofilm grown on its surface prototype to the current integrated, multi-functional device that produces bioelectricity, bioremediates wastewater and assimilates carbon dioxide (CO2). This study explores the ability of our algal BPV platforms in sustaining power output as well as their performance after nutrient replenishment. Our BPV prototype devices generated up to 32.83 mu W m(-)(2) from the freshwater cyanobacterium Synechococcus elongatus UMACC 105 and 0.11 mu W m(-2) from the marine alga Chlorella vulgaris UMACC 258. Power output was maintained by both freshwater and marine microalgal strains for 50 days, thus demonstrating their high potential as long-term low power generators throughout an extended duration in a minimal stress environment.

Item Type: Article
Funders: Ministry of Higher Education Malaysia under the Higher Institution Centre of Excellence (HICoE) Programme [IOES-2014F], UM Innovate Fund (Grant No: PPSI-2020-HICOE-03), Fundamental Research Grant Scheme (FRGS) (Grant No: FP098-2022)
Uncontrolled Keywords: Chlorohyta; Cyanobacteria; Green energy; Bioelectricity; Biophotovoltaic; Microalgae
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Science > Department of Chemistry
Faculty of Science > Department of Physics
Nanotechnology & Catalysis Research Centre
Institute of Advanced Studies
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms Zaharah Ramly
Date Deposited: 29 Nov 2023 03:00
Last Modified: 29 Nov 2023 03:00

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