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 photovoltaics,
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.
Renewable
energy
Renewable energy is energy that can be replenished easily. For years we have been
using sources like wood, sun, water, etc. for means for producing energy.
Energy that can be produced by natural objects like wood, sun, wind, etc. is
considered to be renewable.
Water
purification
Water purification: The whole idea/concept of having dirt/germ/pollution free
water flowing throughout the environment. Many other phenomena lead from this
concept of purification of water. Water pollution is the main enemy of this
concept, and various campaigns and activists have been organized around the
world to help purify water.
Air
purification
Air purification: Basic and common
green plants can be grown indoors to keep air fresh because all plants remove
CO2 and convert it into oxygen. The best examples are: Dypsis lutescens,
Sansevieria
trifasciata, and Epipremnum aureum.
Sewage
treatment
Sewage treatment is conceptually similar to water purification. Sewage
treatments are very important as they purify water per levels of its pollution.
The more polluted water is not used for anything, and the least polluted water
is supplied to places where water is used affluently. It may lead to various
other concepts of environmental protection, sustainability etc.
Environmental
remediation
Environmental
remediation is the removal of pollutants or
contaminants for the general protection of the environment. This is
accomplished by various chemical, biological, and bulk movements. (encyclopedia
of medical concepts)
Solid
waste management
Solid waste management is the purification, consumption, reuse, disposal and
treatment of solid waste that is undertaken by the government or the ruling bodies
of a city/town.
eGain
forecasting
Egain forecasting is a method using
forecasting technology to predict the future weather's impact
on a building.
By adjusting the heat based on the weather forecast, the system eliminates
redundant use of heat, thus reducing the energy consumption and the emission of
greenhouse gases.
Energy
conservation
Energy conservation is the utilization of devices that require smaller amounts
of energy in order to reduce the consumption of electricity. Reducing the use
of electricity causes less fossil fuels to be burned to provide that
electricity.
Alternative
and clean power
The
Tesla Roadster is the only all-electric sports car for sale and in serial
production. It can be plugged into conventional outlets and can be charged
fully or partially on renewable energy,
including solar, hydroelectric, geothermal or wind power.
Principles:
Scientists continue to search for clean energy
alternatives to our current power production methods. Some technologies such as
anaerobic digestion produce renewable energy from waste materials. The global reduction of greenhouse gases
is dependent on the adoption of energy conservation technologies at industrial
level as well as this clean energy generation. That includes using unleaded gasoline, solar energy
and alternative fuel vehicles, including plug-in hybrid
and hybrid electric vehicles.
Since industrial use of energy
accounts for 51% of worldwide energy usage
improving energy efficiency in this field is a top priority for environmental
technology companies around the globe. Advanced energy efficient electric motor
(and electric generator) technology that are cost effective to encourage their
application, such as the brushless wound-rotor doubly fed electric machine and energy saving module, can reduce the amount of carbon dioxide
(CO2) and sulfur dioxide
(SO2) that would otherwise be introduced to the atmosphere, if
electricity is generated using fossil fuels. Greasestock
is an event held yearly in Yorktown
Heights, New York which is
one of the largest showcases of environmental technology in the United States.
Education
Courses aimed at developing
graduates with specific skills in environmental systems or environmental
technology are becoming more common and fall into three broads classes:
- Environmental Engineering or Environmental Systems courses oriented towards a civil engineering approach in which structures and the landscape are constructed to blend with or protect the environment;
- Environmental chemistry, sustainable chemistry or environmental chemical engineering courses oriented towards understanding the effects (good and bad) of chemicals in the environment. Such awards can focus on mining processes, pollutants and commonly also cover biochemical processes;
- Environmental technology courses oriented towards producing electronic, electrical or electrotechnology graduates capable of developing devices and artefacts able to monitor, measure, model and control environmental impact, including monitoring and managing energy generation from renewable sources, and developing novel energy generation technologies.
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