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If you can search the P2 tech archives there was some discussion on this last year, i think in early fall.
As far as chemical alternatives I don't think there are any but some major airports have developed very elaborate collection and recycling programs for deicing fluids.
I believe that one airport has actually built some sort of hangar that aircraft can pull through and be deiced with some sort of heat source, I want to say Pittsburgh or someplace like that.
I'm certainly no expert in this area but I do think that discussion is in the archives.
At 07:55 AM 5/13/97 -0400, you wrote:
>It's a little late in the year for this but I'm searching for alternative
>methods to propylene glycol, potassium acetate and ethylene glycol for deicing
>planes and runways. Any referrals are appreciated.
>National Technology Transfer Center
Phillip ( Jack ) Annis
UW-Extension - Solid and Hazardous Waste Education Center
161 W. Wisconsin Ave Suite 6000
Milwaukee, WI 53203-2602
Phone: (414) 227-3371 Fax: (414) 227-3165
University of Wisconsin-Green Bay