The University of Maryland is spearheading an innovative project to develop a microbial fuel cell, Persistent Oceanographic Device Power (PODPower), that harnesses energy from marine bacteria to power ocean sensors. This breakthrough technology is designed to generate 10 watts of power continuously for over a year, enabling the operation of oceanographic devices like water chemistry monitors and whale-tracking sensors.
How PODPower Works
The system operates underwater, leveraging a series of bio-inspired and technological innovations:
- Microbe Collection and Concentration: A collection net, inspired by fish gills, gathers ocean microbes and organic matter.
- Fermentation Chamber: Organic matter is fed into the chamber using a corkscrew-style auger, where bacteria pre-digest the material into a more efficient energy source.
- Fuel Cell Energy Production: Specialized bacteria colonize the electrodes in the microbial fuel cell, releasing electrons directly for electric power.
- Dual Cathode System: Enhances power output, surpassing previous microbial fuel cell designs.
Significance and Potential
According to Professor Stephanie Lansing, the project leader, this bio-inspired energy solution offers game-changing potential for powering ocean sensors while maintaining environmental sustainability. PODPower could significantly advance ocean sensing capabilities in areas such as:
- Marine ecosystem monitoring
- Climate change research
- Maritime navigation and safety
Collaborative Effort and Funding
The project involves collaboration with eight prestigious institutions and firms, including Battelle, George Washington University, Harvard University, and Yokogawa Corp. of America. The initial funding for Phase 1 is $7.8 million, with the potential for an additional $3.4 million in Phase 2. The latter phase will scale the technology to produce 100 watts of power and test deployment across diverse marine environments.
Future Implications
The development of PODPower represents a significant step toward sustainable and autonomous energy solutions for marine applications. By creating a reliable, bio-inspired power source, the project holds the potential to revolutionize oceanographic research, protect marine life, and support long-term monitoring of our oceans.
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Source: MARINE TECHNOLOGY
