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Re: cement kilns
Apologies to all as I am going to be sporadic on participation over the
> This may be a little naive, but please bear with me.
> If a cement kiln uses natural gas or electricity for the kiln,
> and the source of the cement is ordinary, pure, Portland
> cement and non-contaminated fill, then a cement kiln
> should have ZERO dioxin output, since there are few
> sources of benzene rings and chlorine.
Most kilns use coal and coke as their primary fuel source. These kilns
are a source of dioxins without any input whatsoever of haz waste; well
> I believe, from reading those sections of Dying From Dioxin,
> that the EPA believes that a fairly substantial amount of
> the airborne dioxin contamination in the U.S. comes from
> cement kilns that burn hazwaste.
The USEPA *knows* that cement kilns are a large source of dioxins
whether they burn haz waste or not. Again, any emission test will
tell you the same thing.
Sometime next month I'll try to drag out some dioxin emission test
results from both kilns using haz waste and kilns just using coal/coke.
For most, the differences are not that big. Bottom line, the kilns
need better control technology, regardless of what they use, and that
is where the focus should be. It would be dishonest to local
populations to fight the kiln's haz waste use and claim you will
significantly reduce the resident's dioxin exposure.