Organisms may one day turn an electrical current into a rich source of organic compounds for biofuels.
The reason we’re hooked on oil, and its climate warming derivatives, is the astonishing amount of energy packed into every gallon of the stuff. Gasoline burns brighter compared to alternatives from ethanol to electricity whenever it’s stored in a tank or battery. But if we could make energy-dense liquids from electrons, the energetic sub-atomic particles driving an electrical current, we could begin weaning ourselves off fossil fuels, particularly in transportation.
Mariprofundus ferrooxydans PV-1, a little bacteria from the ocean, may be the microbe for the job. It feasts on the iron atoms dissolved in seawater, which makes it attractive to scientists who want to turn it into an electric factory for making biofuels. Here’s how it works: Most life on Earth depends on the sun to drive photosynthesis.
Plants use solar radiation to use and capture chemical energy, combining water and carbon dioxide to create sugars, carbohydrates, proteins, and other compounds. These are in turn eaten by other organisms higher up the food chain. A few rare classes of organisms actually feed directly on the energy in chemical bonds of the Earth’s minerals. By rearranging molecules, the microbes grab energy from the transfer of electrons among atoms. One group, known as lithoautotrophs, or “eaters of rock,” reduce mineral compounds to fuel their metabolism while driving massive geological processes such as rock weathering in the process.
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Water is the most abundant yet least understood liquid in nature. It exhibits many strange behaviors that scientists still struggle to explain. While most liquids get denser as they get colder, water ...
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Scientists have taken the clearest picture yet of electronic particles that make up a mysterious magnetic state called quantum spin liquid (QSL).
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- Designing Better Batteries for Grid-Scale Energy Storageon July 22, 2021 at 10:17 am
Researchers at Sandia National Laboratories have designed a new class of molten sodium batteries for grid-scale energy ... electrons and sulfuric acid to form lead sulfate and water. For the new ...
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Last month, scientists from Bristol University unveiled their design for the pollution eating robot ... and the microbial fuel cell (MFC) to power the paddle. As the bacteria metabolize organic ...