Rethink Your Life!
Finance, health, lifestyle, environment, philosophy
The Work of Art and The Art of Work
Kiko Denzer on Art
[Cob] Re: Pollution from Production of Portland CementAmanda Peck ap615 at hotmail.com
Tue Apr 26 18:15:30 PDT 2005
True. But was this the part of the process involving burning limestone to make lime? (remember lime=good, concrete=bad, at least to some of the purists) That said, coal dust and Sulfur Oxides ain't real good company. But consider that- LNG supplies, at least in the U.S., are starting to run out. So we're starting to import the stuff in huge pressurized tankers. Which will add to the embodied energy, if not actual pollution. (not to mention cooling the seawater off Baja California) Somehow I don't think there's one really good answer to all this. May I re-recommend Tony Wrench's book, "How to make a low-impact round house." He does a whole lot better job of thinking through "low-impact" than most residents of the U.S., even those of us wanting to build an all-natural house of mud and straw. ........... Frank wrote: In Edmonton, Alberta, Canada at least one cement manufacturer converted their furnaces back from using natural gas to coal because of the cost savings. The resulting problems are more carbon dioxide production as well as increased sulphur dioxide production depending on the sulphur content of the coal. There would also be increased pollution (especially coal dust) from moving the coal from storage to the furnaces.
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