Tag: Environmnet

Green nanotechnology and Sustainability

Everybody knows what is nanotechnology, it is the study and control of matter at the nano-scale, rearranging atoms and molecules. Nanotechnology has made marvelous contributions in the world of science especially in computer science and medical science.

But have you heard of green nanotechnology? The name itself suggests that it has something to do with greenery. It is the study of how nanotechnology can benefit the environment, such as by using less energy during the manufacturing process, the ability to recycle products after use and using Eco-friendly materials.

It builds on the principles of green chemistry and green engineering, and focuses on using the unique effects that occur in nano-scale materials.

Green nanotechnology can help to provide clean water to billions of people via novel filtration techniques, and has the ability to decontaminate dirty water. It can help in increasing the use of renewable energy and help in waste management too.

It can also influence the design of nano-materials and products by eliminating or minimizing pollution from the production of these materials.

It is all about making green nano-products and using them in support of sustainability. Sustainable development refers to a development that meets the needs of the present of the present, without compromising the ability of future generations to meet their own needs. It will aim at producing nano-materials without harming environmental or human health.

Nanotechnology can help reduce agricultural waste and bring down pollution levels. Scientists are working on nano-engineered enzymes that will allow simple and cost-effective conversion of cellulose from waste plant parts into ethanol.

Another example is rice husk that can become a source of renewable energy with nanotechnology. When rice husk is burned into thermal energy or bio-fuel a large amount of high quality nano-silica is produced, which can be further utilized to make other materials such as glass or concrete.

Nano sensors dispersed in the field can also detect presence of plant viruses and the level of soil nutrients.

Nanotechnology can reduce manufacturing costs for solar cells as a result of using a low temperature process.

Nanotechnology is being hailed as the next sunrise industry for India. The Department of Science and Technology of the Central Government has announced a national initiative in nano-materials, while the Jawaharlal Nehru Center for Advanced Scientific Research, Bangalore, has pioneered the study of nanotechnology in India. Prof. C.N.R Rao and the center has done world class research in nanotechnology using state of the art equipment.

A stream of nanotechnology-based products is beginning to emerge in India, with applications in the security realm. Besides D.R.D.O. (Defense Research & Development Organization) serious researches are also taking place in institutions like IIT, and Madras University.

Hopefully, in the near future as we advance further in the field of green nanotechnology, it will help us in replacing existing products with Nano-products that are more environment friendly.

KERALA’S BIGGEST SOLAR FLOATING POWER PLANTS COMMISSIONED AT COCHIN INTERNATIONAL AIRPORT

Cochin International Airport, the largest and busiest airport in Kerala which handles about 10 million passenger movements in and out the state annually, is located at Nedumbassery in the outskirts of Cochin city. With the inauguration of a dedicated solar plant in 2015, Cochin International airport won the title of world’s first fully solar-powered airport. The CIAL solar power project comprises 92,150 solar panels laid across 94 acres, generating 100,000 units of electricity on a daily basis. The airport authority has been honoured with the Champion of Earth award by the United Nations in 2018 for their excellence in the large-scale introduction of sustainable energy sources.

On 17th January 2021, CIAL crossed yet another glorious milestone with the commission of one of the biggest floating solar power plants in Kerala. The cost-effective high-density polyethylene floats, using most modern French technology, are laid over two artificial lakes in the CIAL golf course. The floats consist of 1300 photovoltaic cells and have a capacity of 452 KWh helping the airport to produce around 1.60 lakh units of power a day as against its daily consumption stands around 1.30 lakh units, the authorities said.

CIAL sets an example of Total Sustainability Management by treating the sewage water for water harvesting in its golf course with the help of 12 artificial lakes. The water from these lakes was earlier used for irrigating the lawns but now with the installation of these floating solar panels, they have taken another step forward in sustainable and environment friendly resource management.

The Managing Director of CIAL, Mr V J Kurian said, “The pre-commissioning trials showed that these panels which cost around Rs 2 crore to the company are producing power with maximum output efficiency among the eight solar power plants installed by CIAL at various locations in the airport premises. CIAL has been reinventing itself since its formative days. One of our innovations which proved that relying upon green energy is possible even for the high energy consumers like an airport has won us the champions of the earth award instituted by the United Nations. We are committed to the protection of nature and trying our best to reduce carbon footprints.” 

The installation of floating solar panels are usually very expensive when compared to the ground-mounted and rooftop ones. CIAL was able to overcome these limitations and bring down the cost using the novel technology as the  French company CIEL TERRA provided technical assistance. The solar panels are also connected to the KSEB power grid which helps them to bank the excess energy produced.

Climate change

Climate change refers to the change in the environmental conditions of the earth. This happens due to many internal and external factors. The climatic change has become a global concern over the last few decades. Besides, these climatic changes affect life on the earth in various ways. These climatic changes are having various impacts on the ecosystem and ecology. Due to these changes, a number of species of plants and animals have gone extinct.

When Did it Start?

The climate started changing a long time ago due to human activities but we came to know about it in the last century. During the last century, we started noticing the climatic change and its effect on human life. We started researching on climate change and came to know that the earth temperature is rising due to a phenomenon called the greenhouse effect. The warming up of earth surface causes many ozone depletion, affect our agriculture, water supply, transportation, and several other problems.

Reason Of Climate Change

Although there are hundreds of reason for the climatic change we are only going to discuss the natural and manmade (human) reasons.

Natural Reasons

These include volcanic eruption, solar radiation, tectonic plate movement, orbital variations. Due to these activities, the geographical condition of an area become quite harmful for life to survive. Also, these activities raise the temperature of the earth to a great extent causing an imbalance in nature.

Human Reasons

Man due to his need and greed has done many activities that not only harm the environment but himself too. Many plant and animal species go extinct due to human activity. Human activities that harm the climate include deforestation, using fossil fuel, industrial waste, a different type of pollution and many more. All these things damage the climate and ecosystem very badly. And many species of animals and birds got extinct or on a verge of extinction due to hunting

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Effects Of Climatic Change

These climatic changes have a negative impact on the environment. The ocean level is rising, glaciers are melting, CO2 in the air is increasing, forest and wildlife are declining, and water life is also getting disturbed due to climatic changes. Apart from that, it is calculated that if this change keeps on going then many species of plants and animals will get extinct. And there will be a heavy loss to the environment.

What will be Future?

If we do not do anything and things continue to go on like right now then a day in future will come when humans will become extinct from the surface of the earth. But instead of neglecting these problems we start acting on then we can save the earth and our future. Although humans mistake has caused great damage to the climate and ecosystem. But, it is not late to start again and try to undo what we have done until now to damage the environment. And if every human start contributing to the environment then we can be sure of our existence in the future.

Pollution

Pollution is a term which even kids are aware of these days. It has become so common that almost everyone acknowledges the fact that pollution is rising continuously. The term ‘pollution’ means the manifestation of any unsolicited foreign substance in something. When we talk about pollution on earth, we refer to the contamination that is happening of the natural resources by various pollutants. All this is mainly caused by human activities which harm the environment in ways more than one. Therefore, an urgent need has arisen to tackle this issue straightaway. That is to say, pollution is damaging our earth severely and we need to realize its effects and prevent this damage. In this essay on pollution, we will see what are the effects of pollution and how to reduce it.

Effects of Pollution

Pollution affects the quality of life more than one can imagine. It works in mysterious ways, sometimes which cannot be seen by the naked eye. However, it is very much present in the environment. For instance, you might not be able to see the natural gases present in the air, but they are still there. Similarly, the pollutants which are messing up the air and increasing the levels of carbon dioxide is very dangerous for humans. Increased level of carbon dioxide will lead to global warming.

Further, the water is polluted in the name of industrial development, religious practices and more will cause a shortage of drinking water. Without water, human life is not possible. Moreover, the way waste is dumped on the land eventually ends up in the soil and turns toxic. If land pollution keeps on happening at this rate, we won’t have fertile soil to grow our crops on. Therefore, serious measures must be taken to reduce pollution to the core.

Types of Pollution

How to Reduce Pollution?

After learning the harmful effects of pollution, one must get on the task of preventing or reducing pollution as soon as possible. To reduce air pollution, people should take public transport or carpool to reduce vehicular smoke. While it may be hard, avoiding firecrackers at festivals and celebrations can also cut down on air and noise pollution. Above all, we must adopt the habit of recycling. All the used plastic ends up in the oceans and land, which pollutes them.

So, remember to not dispose of them off after use, rather reuse them as long as you can. We must also encourage everyone to plant more trees which will absorb the harmful gases and make the air cleaner. When talking on a bigger level, the government must limit the usage of fertilizers to maintain the soil’s fertility. In addition, industries must be banned from dumping their waste into oceans and rivers, causing water pollution.

To sum it up, all types of pollution is hazardous and comes with grave consequences. Everyone must take a step towards change ranging from individuals to the industries. As tackling this problem calls for a joint effort, so we must join hands now. Moreover, the innocent lives of animals are being lost because of such human activities. So, all of us must take a stand and become a voice for the unheard in order to make this earth pollution-free.