10 “green” technologies that help preserve the environment
It is estimated that by 2025 the world population will increase by 2,900 million people and by 2030 will require 60% more energy than today. Energy that if we continue with the destruction of the environment, we are not going to have.
Given this condition, the energy-saving alternatives seem very necessary. This list details the latest alternatives to produce and save energy in order to preserve the environment.
It is clear that most of these actions cannot be implement domestically, but in somehow we have the responsibly to make a contribution?
1. Digital Press: The possibility of the electric newspaper contributes directly to mitigate pollution, in the US alone more than 55 billion newspapers are sold each day.
The electronic paper is a flexible display that looks very much like a newspaper, but can be used daily. The screen contains millions of microcapsules which carry electric charges adhered by a thin steel sheet. Each microcapsule has white and black particles that are associated with positive or negative charges.
According to the applied loads,, the white and black particles come to the surface exhibiting different patterns.
2. Eliminating CO2: The CO2 gas is generated by the greenhouse effect that contribute to global warming. Although some experts say it is impossible to suppress the emission of C02 in the atmosphere, it is obvious that something must be done about it. A proposed method is injected into the ground before this can reach the atmosphere, to separate it from the other gases and thus “bury” in abandoned oil wells, saline ponds or rocks.
3. Using plants and microbes to clean up pollution: In order to remove contaminants from the environment and restore the quality of ecosystems, technology is being built, include bio-remediation (using microbes to clean up places and spaces), phyto-remediation (using plants to decontaminate places), and natural attenuation allowing the environment to cleanse itself over time.
4. Planting on the roof: This concept is attributed to the Hanging Gardens of Babylon, who did not succeed in the modern world, but now again make sense linked to environmental care
The roof gardens help absorb heat, reduce the impact of carbon dioxide absorbing CO2, making oxygen, and absorb storm water, on summer reducing the use of air conditioners. The technique could also decrease the effect of “heat island” that occurs in urban centers.
5. Implementing Waves and Tides: Oceans cover over 70% of the surface of the Earth, reason that makes it so necessary for the welfare of the planet. The key is to store enough energy from the waves. In Portugal it is developing a new project that will supply power to more than 1500 homes.
6. By converting the thermal energy of the oceans: The largest solar energy collector in the earth, is the ocean, which absorbs enough solar energy every day which is comparable the thermal energy contained in 250 billion barrels of Petroleum. The technologies OTEC (Ocean Thermal Energy Conversion) convert thermal energy contained in the oceans into electricity using the difference temperature between the water surface, which is hot and the cold of the depths of the ocean.
The disadvantage of this technology is that it is not yet efficient enough to be used as the main source of power generation.
7. The New Building Ideas: The use of photovoltaic modules and thermal energy for harvesting solar collectors as photons is already quite famous. New research linked this technology, with the uses of mirrors and parabolic dishes to concentrate the sun’s power that is optimizing the absorption of energy. The latest technological innovation associated with solar energy is the development of a Solar Paint to generate electricity.
8. The power of Hydrogen: Hydrogen is presented as a green alternative to traditional fossil fuels, generating energy from an electrochemical reaction between oxygen and hydrogen. The main problem is that hydrogen is not pure.
9. Eliminating Sal: The shortage of fresh water is also another problem. According to studies by the United Nations its scarcity will affect billions of people in the middle of this century. The good news is the desalination process, achieved by removing salt and minerals from seawater turning it into drinking water. The problem of this solution is its high cost, since other energy is needed to heat the water, which by means of evaporation and a subsequent filtrate becomes drinking water.
10. Elaborating fuels from “almost anything”: The idea is pretty simple: Any carbon – containing waste from a tire to animal waste can become combustible if they are subjected to sufficient heat and pressure. This process is called depolymerisation. It is very similar to natural geological process that generates fossil fuels like oil, it is characterized by its speed, because instead of requiring thousands of years and extreme conditions of heat and pressure, as does fuel production based on fossils, PDT achieves the same results in hours, using a series of tanks, pipes, pumps and boilers, which can be installed in the garage yard.