on 2/4/03 6:52 am, John Rodgers wrote: > Good reasons for choosing a biodegradable coolant. > > John Rodgers > 88 GL Driver >
Theoretically and actually, both polypropylene glycol and ethylene glycol are biodegradable. Some carbon bonds there to use for energy! How do I know? Well I have used both as a carbon source in bacterial fermentation experiments years ago when involved in biodegradation of de-icing fluids project. The rub is... its an ill-defined consortium of bacteria (and maybe fungi) isolated from chronically polluted ground that does the degrading. So, if the weather is warm, and you can make a nice matrix of soil, well aerated and kept moist, with some garden fertiliser, all on a impervious "basin"... :)
(extra points to those who can see one of the challenges bio-remediation of de-icing fluids...hint, when are the fluids used? extra bonus points to those who can guess what is often done with the recovered de-icing fluids, no points to those who can guess what used to be done with de-icing fluids - "gee mum, why is that creek still flowing in January?")
Alistair |
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