Quantum mechanics explains efficiency of ..
Food is a highly efficient energy-storage mechanism: a 2-ounce granola bar contains as much energy as a 12-pound lithium battery. Rotting organic matter in landfills releases some of that energy as gas, typically about 50 percent methane, which can be captured, cleaned and burned to generate electricity and heat. Before its 7.9-megawatt EcoLine cogeneration project could start operating, the University of New Hampshire had to build its own gas processing plant to enrich the gas from a nearby landfill. This facility is necessary to remove carbon dioxide, as well as strip out contaminants like sulfur and volatile organic compounds. Nationally, there are 558 landfill gas-to-energy projects operating out of 2400 possible landfills. The EPA has identified another 510 sites as highly promising but untapped, with the potential to produce enough electricity to power 690,000 homes.
In plant photosynthesis, the energy of light is used ..
John Wingfield, NSF's assistant director for the Directorate of Biological Sciences, said, "Photosynthesis captures abundant and free solar energy and generates food and oxygen for the planet. Emerging technologies, like synthetic biology, are used in these potentially transformative projects to address the long-standing quest to increase efficiency of photosynthesis."
2. Multi-Level Approaches for Generating Carbon Dioxide (MAGIC) led by John Golbeck of Pennsylvania State University: MAGIC is aimed at engineering a light-driven carbon dioxide pump that will increase the availability of carbon dioxide to an enzyme that promotes photosynthesis and will thereby increase photosynthetic efficiency.
In relation to capturing energy, ..
“Energy transfer in light-harvesting macromolecules is assisted by specific vibrational motions of the chromophores,” said Alexandra Olaya-Castro (UCL Physics & Astronomy), supervisor and co-author of the research. “We found that the properties of some of the chromophore vibrations that assist energy transfer during photosynthesis can never be described with classical laws, and moreover, this non-classical behaviour enhances the efficiency of the energy transfer.”
By both capturing carbon emissions and storing energy from ..
The majority of light-gathering macromolecules are composed of chromophores (responsible for the colour of molecules) attached to proteins, which carry out the first step of photosynthesis, capturing sunlight and transferring the associated energy highly efficiently. Previous experiments suggest that energy is transferred in a wave-like manner, exploiting quantum phenomena, but crucially, a non-classical explanation could not be conclusively proved as the phenomena identified could equally be described using classical physics.
energy to chemical energy at 64 percent efficiency, ..
Nuclear fusion processes in the center of the sun release the energy that ultimately reaches Earth as radiation. The main way in which that solar energy is captured and stored on Earth is through the complex chemical process known as photosynthesis. Solar cells are human-made devices that likewise capture the sun’s energy and produce electrical energy.
8 Photosynthesis: Capturing Energy Lecture Outline I
The energy released by burning fuel or digesting food was once energy from the sun that was captured by plants in the chemical process that forms plant matter (from air and water). (Boundary: The fact that plants capture energy from sunlight is introduced at this grade level, but details of photosynthesis are not.)
Light is composed of particles that travel as waves A
1. Plug-and-play photosynthesis led by Anne Jones of Arizona State University: Some single-celled microbes capture solar energy and convert it to fuel for self-replication. Plug-and-play photosynthesis aims to distribute the capture and conversion of energy to two environments, so that each environment can be optimized for maximum efficiency for its role.