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Hi, Brenda. I was intrigued by your post and made an incorrect correlation between plasma arc technology and those infamous "plastic to oils" and "chicken poop to oil" schemes. But, I decided to do a little snooping and found quite a bit of info and have attached a link to the City of Honolulu's study in 2003 regarding plasma arc technology. It's an interesting read but the bottom like is it's just another name for incineration. Mercury emissions as well as the vaporization of heavy metals seem to be acknowledged drawbacks. http://www.opala.org/TechStudies/plasma.html I've copied the Grass Roots Recycling Network on your post as they certainly have better information. I'd still like to think that zero waste is the best alternative. Best, Bruce Maine Professional Associate Sustainable Design Services HDR Architecture http://www.hdrgreen.com -----Original Message----- From: biggreen@no.address [mailto:biggreen@no.address] On Behalf Of BRENDA M. STOKES Sent: Tuesday, August 30, 2005 3:23 PM To: Big Green Subject: Big Green: Recyclability Eight years ago I was at Georgia Tech. Dr. Lou Circeo, a construction research scientist, had developed and patented an in-situ use for plasma arc technology. He put his plasma torch and its generator into the back of a pickup truck and demonstrated it here and there. The torch could be extended into the bottom of a landfill, activated and lifted at periodic intervals. The extreme heat reduced all waste, even some hazardous waste, into its basic elements and the result was a pile of obsidian. He explained the rock was good for chunking up and using as base for roads. We all know that it takes a lot of years to grow a good crop of rocks, but I have a sample piece of obsidian on my desk that took Dr. Circeo less than two hours to produce from a 50-gallon barrel of Georgia red clay. At that time the cost for each torch was $1,000,000 because they were not being mass produced. The US Navy had purchased one for trial use on a ship. The waste was torched and an inert rock was thrown overboard. Lyon, France had bought one for use on their hundreds-of-years-old landfills. The concept was also valid for shoring the sides of a trench or tunnel. The torch could also be used to enclose radioactive waste into a rock "box" by burying it and torching the earth around it. The temperature and range can be controlled. Is anyone familiar with this technology? Circeo touted it as being the answer to waste that is not yet recyclable. Brenda M. Stokes LEEDtm Accredited Professional Heery-Mitchell - A Joint Venture SPLOST Group DeKalb County Schools 678 676-1516 V 678 676-1469 F 678 410-3658 M _______________________________________________________________ This green building dialogue is provided as a public service by Drew George, along with Environmental Building News <http://www.buildinggreen.com> and Oikos <http://www.oikos.com> For instructions see <http://www.biggreen.org/discussion.html> _______________________________________________________________ |
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