3. What is Green Technology?
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.
4. 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.
5. Laws for Green Technology
The 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.
9. 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 environme
ntal 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.
10.
11.
12. Green Energy
Renewable 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.
14. 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.
17. 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.
19. 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.
20. Green
Nanotechnology
Dematerialization Nanoscale Iron
One of the chief ways nanotechnology Nanoscale iron offers one safe approach for
might decrease pollution is neutralizing chlorinated organic solvents,
through dematerialization -- the organic chlorine-based pesticides like DDT
reduction of materials required for and polychlorinated biphenyls (PCBs). Add
manufacturing. Products that can self- iron nanoparticles to tetrachloroethene (a
assemble out of small components use common solvent used in dry cleaning) and
much less material than ones we build the iron oxidizes, or rusts, freeing up
from the top-down, which generate electrons. The reaction gobbles up these
waste and often require solvents and electrons, leaving ethene, a naturally
chemical processes. Meanwhile, occurring hydrocarbon.
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.