Comments on: Green enough for 35W concrete, toxic coal ash is also used on farms

By: Great Lakes Echo» Blog Archive » Green enough for 35W concrete, toxic coal ash is also used on farms

Mon, 13 Apr 2009 12:39:19 +0000

[...] percent fly ash. The ash is used as a substitute for Portland cement, a key component of concrete. More Share [...]

By: Education Stories in our Sights (plus free Wi-Fi for eligible non-profits!) | Hindsight - From Minnesota 2020

Tue, 07 Apr 2009 16:41:10 +0000

[...] Independent: Green enough for 35W concrete, toxic coal ash is also used on farms A large amount of fly ash that has found a home near downtown Minneapolis has been receiving lots [...]

By: Eric Ferguson

Eric Ferguson — Mon, 06 Apr 2009 03:57:53 +0000

Tom, nice work explaining an esoteric subject.

Is there a way to remove the toxins from fly ash, or is someone working on a method? Using ashes for fertilizer is an old practice. Wood ash, like in your home fireplace or charcoal grill, is good stuff to dump on your garden, so it makes sense that fly ash would be usable as fertilizer, were it free of toxins.

As far as using it as construction material and thereby encouraging the burning of coal, I don’t buy that. There’s no money in selling fly ash, The best coal burners can reasonably hope for is getting someone to take it off their hands for free. For the foreseeable future, coal will be a major source of electricity, and using it in concrete seems much greener than piling it up.

By: Just the Links « North Star Legislative Blog

Just the Links « North Star Legislative Blog — Sat, 04 Apr 2009 15:18:07 +0000

[...] Green enough for 35W concrete, toxic coal ash is also used on farmsTrace metals in fly ash raise que… [...]

By: William Levy

William Levy — Sat, 04 Apr 2009 13:53:19 +0000

While the fly ash use in concrete for roads is OK but caution with other concrete uses in homes as the fly ash may contain 226 Radium that produces radon gas.

William Levy
Radon Measurement Specialist

By: Minnesota Independent: News. Politics. Media. » Green enough for … | welcome2green.com

Fri, 03 Apr 2009 18:08:37 +0000

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