tagged w/ hazardous chemicals
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Image: Anna Kornfeld Simpson with her robot.
Wow! You made THAT with Legos®!" exclaimed the children who crowded around my robot on Public Day at the Intel International Science and Engineering Fair in May 2009. On display was my mobile, autonomous robot that will search a room--and if it moves over a chemical spill, it will detect and respond to the chemical.
This technology has applications in industry, security, counterterrorism, environmental sensing and maybe even Mars exploration. By removing people from the potential danger of searching for and detecting chemicals in hazardous situations, an array of inexpensive robots could help preserve safety and save lives.
The sensor I designed uses relatively simple electrical parts: a light-emitting diode (LED), photodiode, operational amplifier (op-amp) and resistors in combination with a porous silicon chip that temporarily changes color in the presence of a volatile organic compound. A fan sucks up saturated vapor into the sensor chamber holding the chip, and the LED bounces light with a different intensity off the chip and into the photodiode.
The voltage from the photodiode is then amplified and sent to the microcomputer of the robot as the sensor signal. After creating the sensor circuit and adding the fan, I ran some tests to determine if the signal change caused by the targeted chemical was big enough to be easily seen by the robot. The change exceeded my expectations and was clearly large enough to detect the chemical, even in very small quantities and concentrations.Image: Anna Kornfeld Simpson with her robot.
Wow! You made THAT with... more
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The Western Upper Peninsula Electronics Recycling Program and the Retired & Senior Volunteer Program (RSVP) provide an environmentally and economically sound solution to disposing of household electronic waste.
Residents of Baraga, Gogebic, Houghton, Keweenaw, and Ontonagon Counties may bring their items to e-waste collection sites on the specified collection dates in their area.
The initiative received grants and other assistance from the Michigan Department of Environmental Quality and United States Environmental Protection Agency (EPA).
The collection is part of the EPA Great Lakes 2008 Earth Day Challenge involving over 100 projects in eight states across the Great Lakes Basin.
More than a dozen previous collections since 2005 have garnered nearly 48 tons of e-waste from over 850 participants.
2005: 8 collections, 26.5 tons
2006: 4 collections, 15 tons
2007: 1 collection, 6.25 tons
Called e-waste, electronics waste includes old /broken computers, cell phones, and TVs.
The collection for Houghton and Keweenaw counties will be June 21 from 9 a.m. to noon at the health department in Hancock.
An e-waste collection will be held in Baraga County on July 12 from 10 a.m. to noon at a site to be announced.
Collection events for other Copper Country counties will be announced in the future.
The cost to drop off e-waste is 10 cents per pound.
The collection will accept a wide range of e-waste including cell phones, computer and related equipment like laptops, monitors, towers aka central processing units, printers, scanners, keyboards and computer mice
Other e-waste accepted includes stereo equipment, televisions, VCR and DVD players, copiers, cordless telephones, fax machines, fluorescent light bulbs that are 4 to 8 feet in length, microwave ovens and batteries including alkaline, nickel cadmium, lead acid, lithium, mercury.
It's estimate that between 1997 and 2007, nearly 500 million personal computers became obsolete. That's almost 2 computers for every person in the United States.
TV's and computer monitors contain an average of 4 pounds of lead and other toxins.
According to Closing the Circle News, the manufacture of one computer consumes 529 pounds of fossil fuels, 49 pounds of chemicals, and 3,307 pounds of water.
The EPA says nearly 250 million computers will become obsolete nationwide in the next five years.
For additional info contact the Western Upper Peninsula Electronics Recycling Program or RSVP at 906-482-7382.
The goal of the EPA Great Lakes 2008 Earth Day Challenge was the collecting and recycling of one million pounds of electronics (e-Waste) plus the collection and proper disposal of one million pills. The goals were exceeded by 500 percent.
The Earth Healing Initiative assisted some challenge organizers with interfaith liaisons to volunteer and encourage members of local churches/temples to participate in the Earth Day events in their area.
This video on the projects in the EPA Challenge was made possible by a grant from the US Environmental Protection Agency; the EPA's Region 5 office and the EPA Great Lakes National Program Office in Chicago, with the non-profit Interfaith Earth Healing Initiative in Marquette, MI.
The EHI involves American Indian tribes and a coalition of churches, synagogues and other faith traditions joining together to heal, protect and defend the environment.
I’m Greg Peterson, Earth Healing TV
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Western U.P. District Health Department
http://www.wupdhd.org/rsvp/e-waste.html
RSVP
http://www.wupdhd.org/rsvp/index.html
EPA Region 5 Office Chicago
http://www.epa.gov/region5
Interfaith Earth Healing Initiative
http://www.EarthHealingInitiative.org
Cedar Tree Institute
http://www.CedarTreeInstitute.org
Interfaith graphics by Justice St. Rain (Baha'i) of Interfaith Resources - Special Ideas website:
http://www.interfaithresources.com
1-800-326-1197
1-847-733-3559The Western Upper Peninsula Electronics Recycling Program and the Retired & Senior... more
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