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March of the Green Technology
Technology has been defined in many ways. The simplest knowledge is the use of tools and technology to improve working conditions, organizational management and artistic perspective to increase the efficiency of products, machines or people. Primitive people are known for their ingenious use of stones, turning them into weapons and shelter. Using animal skins and bark to cover the body was a step towards textile technology. Technical knowledge to control fires fundamentally changed how humans learned to add new items to food menus and keep warm in cold climates. The wheel brings us to the current state of global transportation, where leg bones are thrown into space after a big meal inspired a space odyssey. The spearhead of information technology, led by the Internet, originated from smoke signals and, more recently, from the printing press. Now we have industrial, educational, information, medical, vision, micro, nano and home technologies and more.
Man does not apply technology alone to advance his goals. Animals and birds are also excellent at creating technological marvels, sometimes even better than we are. Weaving nests, dolphin signaling, monkeys breaking coconut shells, ants domestication techniques, elephant descent techniques from steep slopes, birds migrating to places close to their needs and demands, waiting for the air to change before kites and other large birds take off The heat of the day, and crows dropping stone slabs to raise the water level in narrow-necked jugs, all evoke memories. Looking at the evening sky. You’ll find ducks fly in an inverted V shape, giving others the advantage of vacuum and streamlined motion.
There are differences in how primates behaved in the past, how the animals and birds around us use this technology, and how we use it. differ greatly. They have been working hard to improve living conditions that are compatible with the environment. Our efforts are diverse in many ways. Some are good, some are bad, and some are ugly. Recently, with the start of the industrial revolution, we have mostly increased environmental pollution loads or developed weapons of mass destruction. Technologies for increasing machine efficiency have focused attention on human efficiency. We call it productivity. We pretend to use it as outsourcing. Green technology has no choice but to introduce it and take charge of the entire state of affairs created by humans.
Green technology aims to protect and improve the environment and restore it to the quality it was some 300 years ago by combining all known technologies and human participation with environmental science to create a proper, equitable and sustainable environment. Green technology can be termed as an improvement over existing technologies as it helps to manage various types of pollution in an ecologically and economically friendly manner.
Green technologies are rated according to their carbon footprint. Competitive and successful green technologies have lower greenhouse gas emissions from people, products, processes, events or organizations. There are two ways to achieve this. The first one, which can be called green behavior, is recycling waste, reusing it through restoration and other alternative methods, reducing resource consumption and preserving usable natural resources. The second is to create green conditions, which is to develop technologies that reduce greenhouse gas emissions, thereby reducing carbon footprints. These measures have proven effective in slowing global warming.
The first category of green technologies is to encourage and redefine traditional methods of keeping carbon footprints low. These are recycling and its extension to water and air purification, solid waste treatment including sewage treatment.
Recycling defines the environment through the best conservation. Used materials, usually discarded as waste, are recycled into new products. Composting is the ancient concept of recycling green waste into fertilizer. Recycling plastic waste into new plastic products is now most common. Recycling reduces the consumption of fresh raw materials by utilizing intermediates and waste. It reduces the waste of energy needed to convert fresh raw materials into final products. It reduces air pollution because waste is now recycled instead of incinerated. It reduces water pollution because there are fewer landfills and thus less leachate reaching water bodies.
Wastewater is purified through chemical, mechanical and biological processes to transform it into drinking water and other uses. The air is purified in industry as well as in human habitation in enclosed spaces. Industrial air pollutants such as sulfur oxides are returned to the sulfuric acid, and particulates such as pyroash are converted into cement and bricks. Solid waste generated in human habitats is divided into biodegradable and non-biodegradable waste. Biodegradable waste is composted into fertilizer and biofuel. Non-biodegradable waste is further separated into metal, glass, plastic, etc. The first three are used as intermediate raw materials and recycled into the production pipeline to obtain useful products. Hazardous waste is properly treated as a non-hazardous entity, and then most of it is also recycled. Sewage treatment has acquired state-of-the-art technology. It is treated to be free of parasites, bacteria, fungi, algae and viruses. Treated solid waste is used as fertilizer and treated wastewater is used for irrigation or further treatment for domestic use.
Green technologies to create and maintain a green environment have largely focused on renewable energy. Renewable energy sources such as solar, wind, tidal, nuclear and geothermal energy have been identified as energy sources with the lowest greenhouse gas emissions and have great potential to replace traditional energy suppliers such as fossil fuels and oil. The latter is a non-renewable energy source and is the main cause of major pollutants and greenhouse gas emissions.
Green products are a category in their own right because of their properties of both reducing greenhouse gas emissions and replacing highly polluting non-renewable energy sources. Fuel cells are an example. It eliminates air pollution from cars and replaces hydrocarbon fuels. Another example is plastic made from waste plastic bottles. The product uses less energy in the preparation process than traditional cement made from iron slag, lime and sand. And this kind of plastic has better air permeability and better air permeability. Rainwater can filter through the surface prepared by it, thus enriching the water table below.
Today, the market is flooded with toxic plastic toys that can be very harmful to delicate young children. These are being replaced by toys made from recycled plastic bottles. The latest innovation in this field is a fabric made from waste plastic bottle material. Cricket India members’ clothing materials are made from this fabric.
Green technology is also catching up fast to the computer software world. Now there is software that can remind you to avoid wasting electricity when you are at home or on the other side of the world.
There is a lame excuse circulating that switching to green technologies requires too much research and development and is prohibitively expensive to implement. It may apply to some of these efforts, such as technologies that use geothermal energy. It was also argued that it would take a lot of time to break even. Here, one cannot compare this logic with technologies that are being used and later modified as green technologies. An example is the steam engine, which has seen a transition to the diesel engine, now almost replaced by electric motors, and in the near future by electromagnetic induction and magnetism. A time period will show that the invention and commissioning of the coal-powered steam engine took much longer than the electric engine or future versions to mature. All of these shifts are too lucrative. The break-even time is also short.
With the advent of nanotechnology, you can probably expect miracles to come. Imagine having a chip implanted in your brain to replace a computer, which is one of the main consumers of electricity and is generating huge amounts of electronic waste. You should start dreaming about charging your space vehicles with commonly available solar energy to replace high cost, polluting and heavy cryogenic fuels. You might be lucky enough to travel light-years across the universe in an identified flying object.
Green technology is moving towards a future with a future.
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