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CleanTech
Sustainable urban design and innovation: Photovoltaic ombrière SUDI is an autonomous and mobile station that replenishes energy for electric vehicles using solar energy.

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.

Examples[edit]

Recycling[edit]

Main article: Recycling

Renewable energy[edit]

A view across a reverse osmosis desalination plant in Nepal.

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.[2]

Water purification[edit]

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.[3]

Air purification[edit]

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.[4]

Sewage treatment[edit]

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.[5]

Environmental remediation[edit]

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)[6]

Solid waste management[edit]

Net Zero Court zero emissions office building prototype in St. Louis, Missouri

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.[7]

eGain forecasting[edit]

Egain forecasting is a method using forecasting technology to predict the future weather's impact on a building.[8] 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.[9]

Energy conservation[edit]

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[edit]

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[10] 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.[11][12][13][14][15]

Education[edit]

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.

See also[edit]


References[edit]

  1. ^ Gernatt asphalt innovates with low emission asphalt, The Asphalt Contractor, 23, 20-20,22, 2009, 03 | Accessdate= 26 October 2013
  2. ^ Retrieved Sept 21,2009. NREL official website
  3. ^ Recycling”. Retrieved June 15th, 2009. http://earth911.com/recycling/. “Recycle.gif”. Retrieved June 15th, 2009. http://library.uwf.edu/recycle_logo.gif “What is Water Purification”. Retrieved June 16th, 2009, http://www.bionewsonline.com/s/what_is_water_purification.htm “Sewage Treatment”. Retrieved June 17th, 2009 http://www.euwfd.com/html/sewage_treatment.html “Environmental Remedies and water Resource
  4. ^ Kamal Meattle on how to grow fresh air TED (conference)
  5. ^ “Sewage Treatment”. Retrieved June 17th, 2009 http://www.euwfd.com/html/sewage_treatment.html “Environmental remedies and water Resource
  6. ^ Livescience. Retrieved June 27, 2009.10 top emerging environmental technologies. http://www.reference.md/files/D052/mD052918.html
  7. ^ Retrieved June 16th, 2009. http://www-esd.lbl.gov/ERT/index.html “Urban Waste Management”. Retrieved June 16th, 2009. http://web.worldbank.org/WBSITE/EXTERNAL/TOPICS/EXTURBANDEVELOPMENT/EXTUSWM
  8. ^ Taesler, R. (1990/91) Climate and Building Energy Management. Energy and Buildings, Vol. 15-16, pp 599 - 608.
  9. ^ United States Patent 6098893 Comfort control system incorporating weather forecast data and a method for operating such a system (Inventor Stefan Berglund)
  10. ^ http://www.eia.gov/tools/faqs/faq.cfm?id=447&t=1
  11. ^ Norman, Jim. "Where There’s Never an Oil Shortage". New York Times. May 13, 2007.
  12. ^ Tillman, Adriane. "Greasestock Festival returns, bigger and better". May 14, 2008.
  13. ^ "Greasestock 2008". Greasestock. Retrieved May 20, 2008.
  14. ^ Max, Josh. "Gas-guzzlers become veggie delights at Greasestock in Yorktown Heights". Daily News. May 13, 2008.
  15. ^ "Greasestock 2008: Alternative Fuel, Fun and French Fries". Natural Awakenings. May 2008.

Further reading[edit]

  • OECD Studies on Environmental Innovation Invention and Transfer of Environmental Technologies. OECD. September 2011. ISBN 978-92-64-11561-3. 

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Environmental_technology — Please support Wikipedia.
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