Download Natural and artificial photosynthesis : solar power as an by Reza Razeghifard PDF

By Reza Razeghifard

This technical ebook explores present and destiny purposes of solar energy as an enormous resource of strength that earth gets each day.  Photosynthetic organisms have discovered to make use of this considerable resource of power by way of changing it into high-energy biochemical compounds.  encouraged via the effective conversion of solar power into an electron circulation, makes an attempt were made to build synthetic photosynthetic structures in a position to setting up a cost separation country for producing electrical energy or riding chemical reactions.  one other very important point of photosynthesis is the CO2 fixation and the construction of excessive strength compounds.  Photosynthesis can produce biomass utilizing solar power whereas decreasing the CO2 point in air.  Biomass might be switched over into biofuels akin to biodiesel and bioethanol. lower than yes stipulations, photosynthetic organisms may also produce hydrogen fuel that is one of many cleanest resources of energy.

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Both of these can collect light over a relatively large area and intensify it significantly. The second way to exploit the thermal energy from the sun is to use an engine, perhaps in conjunction with some focusing system such as the ones discussed above. The Stirling engine can easily be adapted to exploit an external heat source and has consequently gained popularity in the solar energy business. Thermoelectric generators based on the Seebeck, or thermoelectric, effect can also be used to convert thermal energy into electricity, although these are usually less efficient than Stirling engines.

We must consider constructing artificial systems from common and cheap materials that may be available everywhere. One should also bear in mind that perhaps plants do not optimize the process toward the same goal as we wish them to do. Maximizing energy conversion is not always the best strategy for an organism; they have evolved for survivability. Attempts are being made on many fronts including mimicking the manganese– calcium cluster of PSII for energy storage (for more details see Chapters 3 and 4, and Refs.

This form of photosynthesis is also carried out by algae and by cyanobacteria (formerly called blue-green algae) (for a perspective on cyanobacteria, see Govindjee and Shevela [6]). Photosynthesis by bacteria other than cyanobacteria, on the other hand, does not involve evolution of O2 . Instead of water (H2 O), other electron donors, for example, hydrogen sulfide (H2 S), are oxidized. This latter type of photosynthesis is called anoxygenic photosynthesis [7,8]. In addition to these processes, some members of the “third domain of life,” the Archaea, as well as some other organisms, carry out conversion of light into electric energy by carrying out light-dependent ion transport.

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