Green Technology

Conserving, Protecting and Renewing the Environment

Bhavya Jain(128) CSE – B (2012 – 2016)

Environmental technology (envirotech), green technology (greentech) or clean technology (cleantech) is the application of one or more of environmental science, green chemistry, environmental monitoring and electronic devices to monitor, model and conserve the natural environment and resources, and to curb the negative impacts of human involvement. The term is also used to describe sustainable energy generation technologies such as photovoltaic, wind turbines, bioreactors, etc. Sustainable development is the core of environmental technologies. The term environmental technologies is also used to describe a class of electronic devices that can promote sustainable management of resources.

What is Green Technology?

Environmental Objectives in 11th Five-Year Plan

1. Increase forest & tree cover by 5%.

2. Attain WHO standards of air quality in all major cities by 2011-2012.

3. Treat all urban waste water by 2011-2012 to clean river waters.

4. Increase energy efficiency by 20 percentage points by 2016-2017.

Estimated Rs.15 crore has been spent for green technology in India in 2011.

Laws for Green TechnologyThe following picture has been taken from the Indian ministry’s website which clearly presents some of the laws implemented for supporting EnvironTech (Green Technology). It states that preserving the environment is not an option but a chance for sustenance.

Waves Of Innovation

Branches Of Green Technology

1. Green Chemistry

2. Green Energy

3. Green IT

4. Green Building

5. Green Nanotechnology

Green Chemistry

Green Chemistry

Green chemistry, also called sustainable chemistry, is a philosophy of chemical research and engineering that encourages the design of products and processes that minimize the use and generation of hazardous substances. Whereas environmental chemistry is the chemistry of the natural environment, and of pollutant chemicals in nature, green chemistry seeks to reduce and prevent pollution at its source.

Green Energy

Green EnergyRenewable energy is energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. About 16% of global final energy consumption comes from renewable resources, with 10% of all energy from traditional biomass, mainly used for heating, and 3.4% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 3% and are growing very rapidly. The share of renewables in electricity generation is around 19%, with 16% of electricity coming from hydroelectricity and 3% from new renewables.

Green Information Technology

Green IT : Technology

Green IT stands for Green Information Technology. Information Technology is essentially the design, implementation and management of computers that both individuals and businesses use.

Green Information Technology

Green Building

Green building (also known as green construction or sustainable building) refers to a structure and using process that is environmentally responsible and resource-efficient throughout a building's life-cycle: from siting to design, construction, operation, maintenance, renovation, and demolition. This requires close cooperation of the design team, the architects, the engineers, and the client at all project stages. The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort.

Green Building

Green Nanotechnology

Green Nanotechnology

Green Nanotechnology refers to the use of nanotechnology to enhance the environmental sustainability of processes currently producing negative externalities. It also refers to the use of the products of nanotechnology to enhance sustainability. It includes making green Nano-products and using Nano-products in support of sustainability.

Nanoscale IronNanoscale iron offers one safe approach for neutralizing chlorinated organic solvents, organic chlorine-based pesticides like DDT and polychlorinated biphenyls (PCBs). Add iron nanoparticles to tetrachloroethene (a common solvent used in dry cleaning) and the iron oxidizes, or rusts, freeing up electrons. The reaction gobbles up these electrons, leaving ethene, a naturally occurring hydrocarbon.

DematerializationOne of the chief ways nanotechnology might decrease pollution is through dematerialization -- the reduction of materials required for manufacturing. Products that can self-assemble out of small components use much less material than ones we build from the top-down, which generate waste and often require solvents and chemical processes. Meanwhile, researchers are also developing ingenious ways to monitor pollution, such as nanosensors that can biochemically detect contamination and pathogens, in real time and over large areas.

Green Nanotechnology

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