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바이오태양광발전 Biophotovoltaic



조류, 이끼류의 광합성을 이용하여 전기에너지를 생산하는 기술. 

Biological photovoltaics 혹은 Bio-phtovoltaics(BPV) 라고 불린다. 





What is BPV?


BPV stands for Bio-Photo-Voltaic. BPV devices generate electricity from light energy by exploiting the photosynthesis of living organisms such as cyanobacteria, moss, algae and vascular plants. More information about BPV technology has been published in Catalyst Magazine (Bombelli and Driver, 2011), and the Journal of Energy and Environmental Science (Bombelli et al, 2011; McCormick et al, 2011).



[각주:1]


BPVs are biological electrochemical systems, similar to microbial fuel cells. In a BPV system, photosynthetic material is employed in the anodic half-cell where it oxidises water using light energy. Some of the electrons generated by water photolysis are transferred to an electrode (anode). At the cathode, a reaction with a relatively high potential consumes electrons and creates a potential difference between the two electrodes, driving electrical current through an external circuit.


BPV systems can employ whole algal or cyanobacterial cells as the light harvesting material, or purified photosynthetic sub-cellular fractions such as thylakoid membranes or isolated photosystems. Sub-cellular photosynthetic material is able to transfer electrons to the anode more effectively, but cannot repair itself. In contrast, we have demonstrated that BPV systems using whole organisms can generate power for months at a time. This ability to self-repair and self-assemble will hopefully make BPV systems a cost-effective alternative to conventional solar panels.



How does it work?


During the process of photosynthesis, the moss releases organic compounds into the soil, which contains bacteria. The bacteria then break down these organic compounds, which they need to survive, liberating a bi-product that includes electrons. These electrons are captured by conductive fibers inside the Moss Table and put to use. The technology therefore harnesses energy which would otherwise be wasted.

 

At present the moss application can generate about 50 milliwatts per square meter (10.8 sq ft) and scientists anticipate that future devices may be able to generate up to 3 watts per square meter. With the development of low-energy consumption laptops that could operate at as little as 1 watt (such as the XO-1 by Quanta Computer), it is anticipated that the future Moss Table could power a laptop for over 14 hours. Down the road, the BPV technology could also give rise to a range of self-sustaining organic-synthetic hybrid objects that would meet our daily needs in a clean and environmentally-friendly way.





적용사례

1. Moss table 





참고

[1] Chris Howe 캠브리지 대학 교수 홈페이지(http://www.bioc.cam.ac.uk/howe/about-the-lab/biological-photovoltaics-bpv) 

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2017. 07. 30 작성



  1. https://en.wikipedia.org/wiki/Biological_photovoltaics [본문으로]

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