[Digestion] Environmentalists Anti-AD Issues

[Duncan Martin]

I guess the rule is arsenic in, arsenic out.

In other words, digestate can't contain any more arsenic than the raw
chicken manure, so AD cannot make the problem any worse - if it exists at
all. The concn might be higher, because the volume is less - but that's a
red herring.

The best approach to these scaremongers is to ask the source of their info -
then evaluate it critically. Often it's just internet gossip.

And even if the info is sound, it might well be specific to a particular
farm with odd local conditions or feed sources - or perhaps a specific
medication added to the feed. I'm no expert on chickens but arsenic (at
above trace background levels) doesn't sound like a likely feed additive.
Would the chickens be fit to eat?

Duncan J Martin PhD
Clouhgjordan Ecovillage
Ireland










On 15 June 2011 14:11, Steven Bolgiano <steven at planetfound.com> wrote:

> Hi Group,
> I overheard one of our more local strident activists, when asked about AD
> for poultry comment that the by-product compost from poultry digesters
> contained significant amounts of arsenic.
>
> Can anyone comment on this or other known or potential anti-AD
> Environmentalist issues. Here on the "Delmarva" peninsula over-application
> of raw chicken manure onto the farm fields, and the subsequent runoff into
> our abundance of estuaries and bays is a big issue. Our goal of introducing
> absolute containment with solar heated bladder/ batch systems and a more
> environmentally acceptable compost byproduct .... is supposed to attract a
> positive response from activists.
>
> Comments, Information, Suggestions?
>
> Thanks!
> Steven
>
> --
> Steven Bolgiano
> Executive Director
> Planet Foundation Ltd.
> 443.235.1344
>
>
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