Bioenergy is biological energy, and it allows biological entities (living beings) to move, to have brain activity and food production and synthesis of biological tissues.
Bioenergy is continuously retransformed cyclically. The typical bioenergetic cycle of plants is called the "Calvin cycle". The bioenergetic cycle of living beings is called the "Krebs cycle". In these cycles the transformation of sugars occurs in other carbohydrates, the purpose of this transformation is the synthesis of very high energy concentration molecules, such as ATP and ADP.
Technological uses of bioenergy
Man discovered that biological entities can burn, and thought that this was the "spirit" that made biological entities animate, move and live. Fire was something mysterious and magical, the control of this energy resource allowed to overcome other animals and an evolutionary development (evolution) also based on the control of energy resources external to its physiology.
The prehistoric man used the heat of the burned wood to heat and illuminate the night, then he cooked the food that became softer and more digestible, later he discovered that he could change all the subjects. Produced new materials such as bricks, glass and metal alloys.
Residues of flora and fauna imprisoned in the subsoil have produced fuel gas that, along with coal and oil, have almost completely replaced wood as fuel. But recently these resources are running out, their economic use has begun to be difficult. The coal is extracted at ever greater depths. More than half of the extractable oil has already been exploited.
Bioenergy and biomass
Biomass is a source of renewable energy. Biomass is composed of biological waste from our homes, gardens or fields, or is even produced especially in the field through special crops.
Based on biomass, it is possible to obtain fuel gas, biodiesel and ethanol, which is a type of biobenzene that is already widely used in Brazil.
If we want an immediate practical demonstration of what bioenergy can do, it is enough that we observe ourselves. We use bioenergy to move, think and grow. All living beings use bioenergy in an innate and natural way, but we have also learned to control and exploit it, although not as effectively as nature.
Nature has been developing this energy on our planet for a few billion years, and the result is a very efficient energy system. They have evolved specialized energy strategies that differ from one animal to another, from one species to another, from a biome.
An American biologist, Shelley D. Minteer, in 2003 presented an electric battery that works with sugar, but also with alcohol or any carbohydrate. The system has special "fixed" bacteria in the battery electrode. The enzymes of the bacteria are able to eliminate the sugar and react with the oxygen in a reaction of reduction of the oxidation (redox). A very famous Japanese company presented a similar application when modifying a fuel cell.
Last review: October 31, 2018